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+<!DOCTYPE html><html><head><title>How-To (Classification)</title><meta charset="utf-8"/><meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta class="swiftype" name="title" data-type="string" content="How-To (Classification)"/><link rel="canonical" href="https://docs.prediction.io/templates/classification/how-to/"/><link href="/images/favicon/normal-b330020a.png" rel="shortcut icon"/><link href="/images/favicon/apple-c0febcf2.png" rel="apple-touch-icon"/><link href="//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet"/><link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet"/><link href="/stylesheets/application-a2a2f408.css" rel="stylesheet" type="text/css"/><script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.js"></script><script src="//cdn.mathjax.org/ma
thjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script><script src="//use.typekit.net/pqo0itb.js"></script><script>try{Typekit.load({ async: true });}catch(e){}</script></head><body><div id="global"><header><div class="container" id="header-wrapper"><div class="row"><div class="col-sm-12"><div id="logo-wrapper"><span id="drawer-toggle"></span><a href="#"></a><a href="http://predictionio.incubator.apache.org/"><img alt="PredictionIO" id="logo" src="/images/logos/logo-ee2b9bb3.png"/></a></div><div id="menu-wrapper"><div id="pill-wrapper"><a class="pill left" href="/gallery/template-gallery">TEMPLATES</a> <a class="pill right" href="//github.com/apache/incubator-predictionio/">OPEN SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md hidden-lg" src="/images/icons/search-glass-704bd4ff.png"/></div></div></div></header><div id="search-bar-row-wrapper"><div class="container-fluid" id="search-bar-row"><div class="row"><div class="col-md-9 col-sm-11 col-xs-11"><div
class="hidden-md hidden-lg" id="mobile-page-heading-wrapper"><p>PredictionIO Docs</p><h4>How-To (Classification)</h4></div><h4 class="hidden-sm hidden-xs">PredictionIO Docs</h4></div><div class="col-md-3 col-sm-1 col-xs-1 hidden-md hidden-lg"><img id="left-menu-indicator" src="/images/icons/down-arrow-dfe9f7fe.png"/></div><div class="col-md-3 col-sm-12 col-xs-12 swiftype-wrapper"><div class="swiftype"><form class="search-form"><img class="search-box-toggler hidden-xs hidden-sm" src="/images/icons/search-glass-704bd4ff.png"/><div class="search-box"><img src="/images/icons/search-glass-704bd4ff.png"/><input type="text" id="st-search-input" class="st-search-input" placeholder="Search Doc..."/></div><img class="swiftype-row-hider hidden-md hidden-lg" src="/images/icons/drawer-toggle-active-fcbef12a.png"/></form></div></div><div class="mobile-left-menu-toggler hidden-md hidden-lg"></div></div></div></div><div id="page" class="container-fluid"><div class="row"><div id="left-menu-wrapper"
class="col-md-3"><nav id="nav-main"><ul><li class="level-1"><a class="expandible" href="/"><span>Apache PredictionIO (incubating) Documentation</span></a><ul><li class="level-2"><a class="final" href="/"><span>Welcome to Apache PredictionIO (incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Getting Started</span></a><ul><li class="level-2"><a class="final" href="/start/"><span>A Quick Intro</span></a></li><li class="level-2"><a class="final" href="/install/"><span>Installing Apache PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" href="/start/download/"><span>Downloading an Engine Template</span></a></li><li class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your First Engine</span></a></li><li class="level-2"><a class="final" href="/start/customize/"><span>Customizing the Engine</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Integrating with Your App</span
></a><ul><li class="level-2"><a class="final" href="/appintegration/"><span>App Integration Overview</span></a></li><li class="level-2"><a class="expandible" href="/sdk/"><span>List of SDKs</span></a><ul><li class="level-3"><a class="final" href="/sdk/java/"><span>Java & Android SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/php/"><span>PHP SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/python/"><span>Python SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/ruby/"><span>Ruby SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/community/"><span>Community Powered SDKs</span></a></li></ul></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Deploying an Engine</span></a><ul><li class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web Service</span></a></li><li class="level-2"><a class="final" href="/cli/#engine-commands"><span>Engine Command-line Interface</span></a></li><li clas
s="level-2"><a class="final" href="/deploy/monitoring/"><span>Monitoring Engine</span></a></li><li class="level-2"><a class="final" href="/deploy/engineparams/"><span>Setting Engine Parameters</span></a></li><li class="level-2"><a class="final" href="/deploy/enginevariants/"><span>Deploying Multiple Engine Variants</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Customizing an Engine</span></a><ul><li class="level-2"><a class="final" href="/customize/"><span>Learning DASE</span></a></li><li class="level-2"><a class="final" href="/customize/dase/"><span>Implement DASE</span></a></li><li class="level-2"><a class="final" href="/customize/troubleshooting/"><span>Troubleshooting Engine Development</span></a></li><li class="level-2"><a class="final" href="/api/current/#package"><span>Engine Scala APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Collecting and Analyzing Data</span></a><ul><li class="level-2"><a class="
final" href="/datacollection/"><span>Event Server Overview</span></a></li><li class="level-2"><a class="final" href="/cli/#event-server-commands"><span>Event Server Command-line Interface</span></a></li><li class="level-2"><a class="final" href="/datacollection/eventapi/"><span>Collecting Data with REST/SDKs</span></a></li><li class="level-2"><a class="final" href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li class="level-2"><a class="final" href="/datacollection/webhooks/"><span>Unifying Multichannel Data with Webhooks</span></a></li><li class="level-2"><a class="final" href="/datacollection/channel/"><span>Channel</span></a></li><li class="level-2"><a class="final" href="/datacollection/batchimport/"><span>Importing Data in Batch</span></a></li><li class="level-2"><a class="final" href="/datacollection/analytics/"><span>Using Analytics Tools</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Choosing an Algorithm(s)</span></a
><ul><li class="level-2"><a class="final" href="/algorithm/"><span>Built-in Algorithm Libraries</span></a></li><li class="level-2"><a class="final" href="/algorithm/switch/"><span>Switching to Another Algorithm</span></a></li><li class="level-2"><a class="final" href="/algorithm/multiple/"><span>Combining Multiple Algorithms</span></a></li><li class="level-2"><a class="final" href="/algorithm/custom/"><span>Adding Your Own Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a class="final" href="/evaluation/"><span>Overview</span></a></li><li class="level-2"><a class="final" href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li class="level-2"><a class="final" href="/evaluation/evaluationdashboard/"><span>Evaluation Dashboard</span></a></li><li class="level-2"><a class="final" href="/evaluation/metricchoose/"><span>Choosing Evaluation Metrics</span></a></li><
li class="level-2"><a class="final" href="/evaluation/metricbuild/"><span>Building Evaluation Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>System Architecture</span></a><ul><li class="level-2"><a class="final" href="/system/"><span>Architecture Overview</span></a></li><li class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using Another Data Store</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li class="level-2"><a class="final" href="/gallery/template-gallery/"><span>Browse</span></a></li><li class="level-2"><a class="final" href="/community/submit-template/"><span>Submit your Engine as a Template</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a class="final" href="/demo/tapster/"><span>Comics Recommendation Demo</span></a></li><li class="level-2"><a class="fina
l" href="/demo/community/"><span>Community Contributed Demo</span></a></li><li class="level-2"><a class="final" href="/demo/textclassification/"><span>Text Classification Engine Tutorial</span></a></li></ul></li><li class="level-1"><a class="expandible" href="/community/"><span>Getting Involved</span></a><ul><li class="level-2"><a class="final" href="/community/contribute-code/"><span>Contribute Code</span></a></li><li class="level-2"><a class="final" href="/community/contribute-documentation/"><span>Contribute Documentation</span></a></li><li class="level-2"><a class="final" href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li class="level-2"><a class="final" href="/community/contribute-webhook/"><span>Contribute a Webhook</span></a></li><li class="level-2"><a class="final" href="/community/projects/"><span>Community Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Getting Help</span></a><ul><li class="level-2"><a cla
ss="final" href="/resources/faq/"><span>FAQs</span></a></li><li class="level-2"><a class="final" href="/support/"><span>Support</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" href="/resources/intellij/"><span>Developing Engines with IntelliJ IDEA</span></a></li><li class="level-2"><a class="final" href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li class="level-2"><a class="final" href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div class="col-md-9 col-sm-12"><div class="content-header hidden-md hidden-lg"><div id="page-title"><h1>How-To (Classification)</h1></div></div><div id="table-of-content-wrapper"><a id="edit-page-link" href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/templates/classification/how-to.html.md"><img src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div
class="content-header hidden-sm hidden-xs"><div id="page-title"><h1>How-To (Classification)</h1></div></div><div class="content"><p>Here are the pages that show you how you can customize the Classification engine template. </p> <ul> <li><a href="/templates/classification/add-algorithm/">Use Alternative Algorithm</a></li> <li><a href="/templates/classification/reading-custom-properties/">Read Custom Properties</a></li> </ul> </div></div></div></div><footer><div class="container"><div class="seperator"></div><div class="row"><div class="col-md-6 col-xs-6 footer-link-column"><div class="footer-link-column-row"><h4>Community</h4><ul><li><a href="//docs.prediction.io/install/" target="blank">Download</a></li><li><a href="//docs.prediction.io/" target="blank">Docs</a></li><li><a href="//github.com/apache/incubator-predictionio" target="blank">GitHub</a></li><li><a href="mailto:user-subscribe@predictionio.incubator.apache.org" target="blank">Subscribe to User Mailing List</a></li><li><a hr
ef="//stackoverflow.com/questions/tagged/predictionio" target="blank">Stackoverflow</a></li></ul></div></div><div class="col-md-6 col-xs-6 footer-link-column"><div class="footer-link-column-row"><h4>Contribute</h4><ul><li><a href="//predictionio.incubator.apache.org/community/contribute-code/" target="blank">Contribute</a></li><li><a href="//github.com/apache/incubator-predictionio" target="blank">Source Code</a></li><li><a href="//issues.apache.org/jira/browse/PIO" target="blank">Bug Tracker</a></li><li><a href="mailto:dev-subscribe@predictionio.incubator.apache.org" target="blank">Subscribe to Development Mailing List</a></li></ul></div></div></div></div><div id="footer-bottom"><div class="container"><div class="row"><div class="col-md-12"><div id="footer-logo-wrapper"><img alt="PredictionIO" src="/images/logos/logo-white-d1e9c6e6.png"/></div><div id="social-icons-wrapper"><a class="github-button" href="https://github.com/apache/incubator-predictionio" data-style="mega" data-count
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+<!DOCTYPE html><html><head><title>Quick Start - Classification Engine Template</title><meta charset="utf-8"/><meta content="IE=edge,chrome=1" http-equiv="X-UA-Compatible"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta class="swiftype" name="title" data-type="string" content="Quick Start - Classification Engine Template"/><link rel="canonical" href="https://docs.prediction.io/templates/classification/quickstart/"/><link href="/images/favicon/normal-b330020a.png" rel="shortcut icon"/><link href="/images/favicon/apple-c0febcf2.png" rel="apple-touch-icon"/><link href="//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet"/><link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet"/><link href="/stylesheets/application-a2a2f408.css" rel="stylesheet" type="text/css"/><script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.2/html5shiv.min.
js"></script><script src="//cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script><script src="//use.typekit.net/pqo0itb.js"></script><script>try{Typekit.load({ async: true });}catch(e){}</script></head><body><div id="global"><header><div class="container" id="header-wrapper"><div class="row"><div class="col-sm-12"><div id="logo-wrapper"><span id="drawer-toggle"></span><a href="#"></a><a href="http://predictionio.incubator.apache.org/"><img alt="PredictionIO" id="logo" src="/images/logos/logo-ee2b9bb3.png"/></a></div><div id="menu-wrapper"><div id="pill-wrapper"><a class="pill left" href="/gallery/template-gallery">TEMPLATES</a> <a class="pill right" href="//github.com/apache/incubator-predictionio/">OPEN SOURCE</a></div></div><img class="mobile-search-bar-toggler hidden-md hidden-lg" src="/images/icons/search-glass-704bd4ff.png"/></div></div></div></header><div id="search-bar-row-wrapper"><div class="container-fluid" id="search-bar-row"><div class="row"><
div class="col-md-9 col-sm-11 col-xs-11"><div class="hidden-md hidden-lg" id="mobile-page-heading-wrapper"><p>PredictionIO Docs</p><h4>Quick Start - Classification Engine Template</h4></div><h4 class="hidden-sm hidden-xs">PredictionIO Docs</h4></div><div class="col-md-3 col-sm-1 col-xs-1 hidden-md hidden-lg"><img id="left-menu-indicator" src="/images/icons/down-arrow-dfe9f7fe.png"/></div><div class="col-md-3 col-sm-12 col-xs-12 swiftype-wrapper"><div class="swiftype"><form class="search-form"><img class="search-box-toggler hidden-xs hidden-sm" src="/images/icons/search-glass-704bd4ff.png"/><div class="search-box"><img src="/images/icons/search-glass-704bd4ff.png"/><input type="text" id="st-search-input" class="st-search-input" placeholder="Search Doc..."/></div><img class="swiftype-row-hider hidden-md hidden-lg" src="/images/icons/drawer-toggle-active-fcbef12a.png"/></form></div></div><div class="mobile-left-menu-toggler hidden-md hidden-lg"></div></div></div></div><div id="page" cl
ass="container-fluid"><div class="row"><div id="left-menu-wrapper" class="col-md-3"><nav id="nav-main"><ul><li class="level-1"><a class="expandible" href="/"><span>Apache PredictionIO (incubating) Documentation</span></a><ul><li class="level-2"><a class="final" href="/"><span>Welcome to Apache PredictionIO (incubating)</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Getting Started</span></a><ul><li class="level-2"><a class="final" href="/start/"><span>A Quick Intro</span></a></li><li class="level-2"><a class="final" href="/install/"><span>Installing Apache PredictionIO (incubating)</span></a></li><li class="level-2"><a class="final" href="/start/download/"><span>Downloading an Engine Template</span></a></li><li class="level-2"><a class="final" href="/start/deploy/"><span>Deploying Your First Engine</span></a></li><li class="level-2"><a class="final" href="/start/customize/"><span>Customizing the Engine</span></a></li></ul></li><li class="level-1"><
a class="expandible" href="#"><span>Integrating with Your App</span></a><ul><li class="level-2"><a class="final" href="/appintegration/"><span>App Integration Overview</span></a></li><li class="level-2"><a class="expandible" href="/sdk/"><span>List of SDKs</span></a><ul><li class="level-3"><a class="final" href="/sdk/java/"><span>Java & Android SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/php/"><span>PHP SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/python/"><span>Python SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/ruby/"><span>Ruby SDK</span></a></li><li class="level-3"><a class="final" href="/sdk/community/"><span>Community Powered SDKs</span></a></li></ul></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Deploying an Engine</span></a><ul><li class="level-2"><a class="final" href="/deploy/"><span>Deploying as a Web Service</span></a></li><li class="level-2"><a class="final" href="/cli/#engine-co
mmands"><span>Engine Command-line Interface</span></a></li><li class="level-2"><a class="final" href="/deploy/monitoring/"><span>Monitoring Engine</span></a></li><li class="level-2"><a class="final" href="/deploy/engineparams/"><span>Setting Engine Parameters</span></a></li><li class="level-2"><a class="final" href="/deploy/enginevariants/"><span>Deploying Multiple Engine Variants</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Customizing an Engine</span></a><ul><li class="level-2"><a class="final" href="/customize/"><span>Learning DASE</span></a></li><li class="level-2"><a class="final" href="/customize/dase/"><span>Implement DASE</span></a></li><li class="level-2"><a class="final" href="/customize/troubleshooting/"><span>Troubleshooting Engine Development</span></a></li><li class="level-2"><a class="final" href="/api/current/#package"><span>Engine Scala APIs</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Collect
ing and Analyzing Data</span></a><ul><li class="level-2"><a class="final" href="/datacollection/"><span>Event Server Overview</span></a></li><li class="level-2"><a class="final" href="/cli/#event-server-commands"><span>Event Server Command-line Interface</span></a></li><li class="level-2"><a class="final" href="/datacollection/eventapi/"><span>Collecting Data with REST/SDKs</span></a></li><li class="level-2"><a class="final" href="/datacollection/eventmodel/"><span>Events Modeling</span></a></li><li class="level-2"><a class="final" href="/datacollection/webhooks/"><span>Unifying Multichannel Data with Webhooks</span></a></li><li class="level-2"><a class="final" href="/datacollection/channel/"><span>Channel</span></a></li><li class="level-2"><a class="final" href="/datacollection/batchimport/"><span>Importing Data in Batch</span></a></li><li class="level-2"><a class="final" href="/datacollection/analytics/"><span>Using Analytics Tools</span></a></li></ul></li><li class="level-1"><a c
lass="expandible" href="#"><span>Choosing an Algorithm(s)</span></a><ul><li class="level-2"><a class="final" href="/algorithm/"><span>Built-in Algorithm Libraries</span></a></li><li class="level-2"><a class="final" href="/algorithm/switch/"><span>Switching to Another Algorithm</span></a></li><li class="level-2"><a class="final" href="/algorithm/multiple/"><span>Combining Multiple Algorithms</span></a></li><li class="level-2"><a class="final" href="/algorithm/custom/"><span>Adding Your Own Algorithms</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>ML Tuning and Evaluation</span></a><ul><li class="level-2"><a class="final" href="/evaluation/"><span>Overview</span></a></li><li class="level-2"><a class="final" href="/evaluation/paramtuning/"><span>Hyperparameter Tuning</span></a></li><li class="level-2"><a class="final" href="/evaluation/evaluationdashboard/"><span>Evaluation Dashboard</span></a></li><li class="level-2"><a class="final" href="/evaluatio
n/metricchoose/"><span>Choosing Evaluation Metrics</span></a></li><li class="level-2"><a class="final" href="/evaluation/metricbuild/"><span>Building Evaluation Metrics</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>System Architecture</span></a><ul><li class="level-2"><a class="final" href="/system/"><span>Architecture Overview</span></a></li><li class="level-2"><a class="final" href="/system/anotherdatastore/"><span>Using Another Data Store</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Engine Template Gallery</span></a><ul><li class="level-2"><a class="final" href="/gallery/template-gallery/"><span>Browse</span></a></li><li class="level-2"><a class="final" href="/community/submit-template/"><span>Submit your Engine as a Template</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Demo Tutorials</span></a><ul><li class="level-2"><a class="final" href="/demo/tapster/"><span>Comics Re
commendation Demo</span></a></li><li class="level-2"><a class="final" href="/demo/community/"><span>Community Contributed Demo</span></a></li><li class="level-2"><a class="final" href="/demo/textclassification/"><span>Text Classification Engine Tutorial</span></a></li></ul></li><li class="level-1"><a class="expandible" href="/community/"><span>Getting Involved</span></a><ul><li class="level-2"><a class="final" href="/community/contribute-code/"><span>Contribute Code</span></a></li><li class="level-2"><a class="final" href="/community/contribute-documentation/"><span>Contribute Documentation</span></a></li><li class="level-2"><a class="final" href="/community/contribute-sdk/"><span>Contribute a SDK</span></a></li><li class="level-2"><a class="final" href="/community/contribute-webhook/"><span>Contribute a Webhook</span></a></li><li class="level-2"><a class="final" href="/community/projects/"><span>Community Projects</span></a></li></ul></li><li class="level-1"><a class="expandible" h
ref="#"><span>Getting Help</span></a><ul><li class="level-2"><a class="final" href="/resources/faq/"><span>FAQs</span></a></li><li class="level-2"><a class="final" href="/support/"><span>Support</span></a></li></ul></li><li class="level-1"><a class="expandible" href="#"><span>Resources</span></a><ul><li class="level-2"><a class="final" href="/resources/intellij/"><span>Developing Engines with IntelliJ IDEA</span></a></li><li class="level-2"><a class="final" href="/resources/upgrade/"><span>Upgrade Instructions</span></a></li><li class="level-2"><a class="final" href="/resources/glossary/"><span>Glossary</span></a></li></ul></li></ul></nav></div><div class="col-md-9 col-sm-12"><div class="content-header hidden-md hidden-lg"><div id="page-title"><h1>Quick Start - Classification Engine Template</h1></div></div><div id="table-of-content-wrapper"><h5>On this page</h5><aside id="table-of-contents"><ul> <li> <a href="#overview">Overview</a> </li> <li> <a href="#usage">Usage</a> </li> <li>
<a href="#1-install-and-run-predictionio">1. Install and Run PredictionIO</a> </li> <li> <a href="#2-create-a-new-engine-from-an-engine-template">2. Create a new Engine from an Engine Template</a> </li> <li> <a href="#3-generate-an-app-id-and-access-key">3. Generate an App ID and Access Key</a> </li> <li> <a href="#4-collecting-data">4. Collecting Data</a> </li> <li> <a href="#5-deploy-the-engine-as-a-service">5. Deploy the Engine as a Service</a> </li> <li> <a href="#6-use-the-engine">6. Use the Engine</a> </li> </ul> </aside><hr/><a id="edit-page-link" href="https://github.com/apache/incubator-predictionio/tree/livedoc/docs/manual/source/templates/classification/quickstart.html.md.erb"><img src="/images/icons/edit-pencil-d6c1bb3d.png"/>Edit this page</a></div><div class="content-header hidden-sm hidden-xs"><div id="page-title"><h1>Quick Start - Classification Engine Template</h1></div></div><div class="content"><h2 id='overview' class='header-anchors'>Overview</h2><p>An engine tem
plate is an almost-complete implementation of an engine. PredictionIO's Classification Engine Template has integrated <strong>Apache Spark MLlib</strong>'s Naive Bayes algorithm by default.</p><p>The default use case of Classification Engine Template is to predict the service plan (<em>plan</em>) a user will subscribe to based on his 3 properties: <em>attr0</em>, <em>attr1</em> and <em>attr2</em>.</p><p>You can customize it easily to fit your specific use case and needs.</p><p>We are going to show you how to create your own classification engine for production use based on this template.</p><h2 id='usage' class='header-anchors'>Usage</h2><h3 id='event-data-requirements' class='header-anchors'>Event Data Requirements</h3><p>By default, the template requires the following events to be collected:</p> <ul> <li>user $set event, which set the attributes of the user</li> </ul> <div class="alert-message note"><p>You can customize to use other event.</p></div><h3 id='input-query' cla
ss='header-anchors'>Input Query</h3> <ul> <li>individual attributes values (for version >= v0.3.1)</li> </ul> <div class="alert-message warning"><p>for version < v0.3.1, it is array of features values</p></div><h3 id='output-predictedresult' class='header-anchors'>Output PredictedResult</h3> <ul> <li>the predicted label</li> </ul> <h2 id='1.-install-and-run-predictionio' class='header-anchors'>1. Install and Run PredictionIO</h2><p>First you need to <a href="/install">install PredictionIO 0.10.0-incubating</a> (if you haven't done it).</p><p>Let's say you have installed PredictionIO at <code>/home/yourname/PredictionIO/</code>. For convenience, add PredictionIO's binary command path to your <code>PATH</code>, i.e. <code>/home/yourname/PredictionIO/bin</code>:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span><span
class="nv">PATH</span><span class="o">=</span><span class="nv">$PATH</span>:/home/yourname/PredictionIO/bin; <span class="nb">export </span>PATH
+</pre></td></tr></tbody></table> </div> <div class="alert-message note"><p>If you launched <strong>PredictionIO AWS instance</strong>, the path is located at <code>/opt/PredictionIO/bin</code>.</p></div><p>Once you have completed the installation process, please make sure all the components (PredictionIO Event Server, Elasticsearch, and HBase) are up and running.</p><div class="alert-message note"><p>If you launched <strong>PredictionIO AWS instance</strong>, you can skip <code>pio-start-all</code>. All components should have been started automatically.</p></div><p>If you are using PostgreSQL or MySQL, run the following to start PredictionIO Event Server:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio eventserver &
+</pre></td></tr></tbody></table> </div> <p>If instead you are running HBase and Elasticsearch, run the following to start all PredictionIO Event Server, HBase, and Elasticsearch:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio-start-all
+</pre></td></tr></tbody></table> </div> <p>You can check the status by running:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio status
+</pre></td></tr></tbody></table> </div> <p>If everything is OK, you should see the following outputs:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4</pre></td><td class="code"><pre>...
+
+<span class="o">(</span>sleeping 5 seconds <span class="k">for </span>all messages to show up...<span class="o">)</span>
+Your system is all ready to go.
+</pre></td></tr></tbody></table> </div> <div class="alert-message note"><p>To further troubleshoot, please see <a href="/resources/faq/#using-predictionio">FAQ - Using PredictionIO</a>.</p></div> <p><a href="#"></a></p> <h2 id='2.-create-a-new-engine-from-an-engine-template' class='header-anchors'>2. Create a new Engine from an Engine Template</h2><p>Now let's create a new engine called <em>MyClassification</em> by downloading the Classification Engine Template. Go to a directory where you want to put your engine and run the following:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2</pre></td><td class="code"><pre><span class="gp">$ </span>pio template get PredictionIO/template-scala-parallel-classification MyClassification
+<span class="gp">$ </span><span class="nb">cd </span>MyClassification
+</pre></td></tr></tbody></table> </div> <p>A new directory <em>MyClassification</em> is created, where you can find the downloaded engine template.</p> <p><a href="#"></a></p> <h2 id='3.-generate-an-app-id-and-access-key' class='header-anchors'>3. Generate an App ID and Access Key</h2><p>You will need to create a new App in PredictionIO to store all the data of your app. The data collected will be used for machine learning modeling.</p><p>Let's assume you want to use this engine in an application named "MyApp1". Run the following to create a new app "MyApp1":</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio app new MyApp1
+</pre></td></tr></tbody></table> </div> <p>You should find the following in the console output:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6</pre></td><td class="code"><pre>...
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Initialized Event Store <span class="k">for </span>this app ID: 1.
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Created new app:
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Name: MyApp1
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> ID: 1
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Access Key: 3mZWDzci2D5YsqAnqNnXH9SB6Rg3dsTBs8iHkK6X2i54IQsIZI1eEeQQyMfs7b3F
+</pre></td></tr></tbody></table> </div> <p>Note that <em>App ID</em><em>, **Access Key</em>* are created for this App "MyApp1". You will need the <strong>Access Key</strong> when you collect data with EventServer for this App.</p><p>You can list all of the apps created its corresponding ID and Access Key by running the following command:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio app list
+</pre></td></tr></tbody></table> </div> <p>You should see a list of apps created. For example:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4</pre></td><td class="code"><pre><span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Name | ID | Access Key | Allowed Event<span class="o">(</span>s<span class="o">)</span>
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> MyApp1 | 1 | 3mZWDzci2D5YsqAnqNnXH9SB6Rg3dsTBs8iHkK6X2i54IQsIZI1eEeQQyMfs7b3F | <span class="o">(</span>all<span class="o">)</span>
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> MyApp2 | 2 | io5lz6Eg4m3Xe4JZTBFE13GMAf1dhFl6ZteuJfrO84XpdOz9wRCrDU44EUaYuXq5 | <span class="o">(</span>all<span class="o">)</span>
+<span class="o">[</span>INFO] <span class="o">[</span>App<span class="nv">$]</span> Finished listing 2 app<span class="o">(</span>s<span class="o">)</span>.
+</pre></td></tr></tbody></table> </div> <p><a href="#"></a></p> <h2 id='4.-collecting-data' class='header-anchors'>4. Collecting Data</h2><p>Next, let's collect some training data. By default, the Classification Engine Template reads 4 properties of a user record: attr0, attr1, attr2 and plan. This templates requires '$set' user events.</p><div class="alert-message info"><p>This template can easily be customized to use different or more number of attributes.</p></div><p>You can send these events to PredictionIO Event Server in real-time easily by making a HTTP request or through the provided SDK. Please see <a href="/appintegration/">App Integration Overview</a> for more details how to integrate your app with SDK.</p><p>Let's try sending events to EventServer with the following <code>curl</code> commands (The corresponding SDK code is showed in other tabs).</p><p>Replace <code><ACCCESS_KEY></code> by the Access Key generated in above steps. Note that <code>loca
lhost:7070</code> is the default URL of the Event Server.</p><p>For convenience, set your access key to the shell variable, run:</p><p><code>$ ACCESS_KEY=<ACCESS_KEY></code></p> <p><a href="#"></a></p> <p>To set properties "attr0", "attr1", "attr2" and "plan" for user "u0" on time <code>2014-11-02T09:39:45.618-08:00</code> (current time will be used if eventTime is not specified), you can send <code>$set</code> event for the user. To send this event, run the following <code>curl</code> command:</p><div class="tabs"> <ul class="control"> <li data-lang="json"><a href="#tab-2f0d3da7-151f-4fbe-a0c5-bd4eb14bb759">REST API</a></li> <li data-lang="python"><a href="#tab-77a2812e-35e9-4341-a1ca-144aef68459f">Python SDK</a></li> <li data-lang="php"><a href="#tab-2b5e8302-d7d7-4121-9e09-fe95226aabf7">PHP SDK</a></li> <li data-lang="ruby"><a href="#tab-69ffb397-0c6b-4037-b3e6-ec69b0e36575">Ruby SDK</a></li> <li data-lang="java"><a href="#t
ab-27bff9a7-bfe7-48c5-b72c-822f1b984a2e">Java SDK</a></li> </ul> <div data-tab="REST API" data-lang="json" id="tab-2f0d3da7-151f-4fbe-a0c5-bd4eb14bb759"> <div class="highlight shell"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14</pre></td> <td class="code"><pre><span class="gp">$ </span>curl -i -X POST http://localhost:7070/events.json?accessKey<span class="o">=</span><span class="nv">$ACCESS_KEY</span> <span class="se">\</span>
+-H <span class="s2">"Content-Type: application/json"</span> <span class="se">\</span>
+-d <span class="s1">'{
+ "event" : "$set",
+ "entityType" : "user",
+ "entityId" : "u0",
+ "properties" : {
+ "attr0" : 0,
+ "attr1" : 1,
+ "attr2" : 0,
+ "plan" : 1
+ }
+ "eventTime" : "2014-11-02T09:39:45.618-08:00"
+}'</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Python SDK" data-lang="python" id="tab-77a2812e-35e9-4341-a1ca-144aef68459f"> <div class="highlight python"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21</pre></td> <td class="code"><pre><span class="kn">import</span> <span class="nn">predictionio</span>
+
+<span class="n">client</span> <span class="o">=</span> <span class="n">predictionio</span><span class="o">.</span><span class="n">EventClient</span><span class="p">(</span>
+ <span class="n">access_key</span><span class="o">=<</span><span class="n">ACCESS</span> <span class="n">KEY</span><span class="o">></span><span class="p">,</span>
+ <span class="n">url</span><span class="o">=<</span><span class="n">URL</span> <span class="n">OF</span> <span class="n">EVENTSERVER</span><span class="o">></span><span class="p">,</span>
+ <span class="n">threads</span><span class="o">=</span><span class="mi">5</span><span class="p">,</span>
+ <span class="n">qsize</span><span class="o">=</span><span class="mi">500</span>
+<span class="p">)</span>
+
+<span class="c"># Set the 4 properties for a user</span>
+<span class="n">client</span><span class="o">.</span><span class="n">create_event</span><span class="p">(</span>
+ <span class="n">event</span><span class="o">=</span><span class="s">"$set"</span><span class="p">,</span>
+ <span class="n">entity_type</span><span class="o">=</span><span class="s">"user"</span><span class="p">,</span>
+ <span class="n">entity_id</span><span class="o">=<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="n">properties</span><span class="o">=</span> <span class="p">{</span>
+ <span class="s">"attr0"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR0</span><span class="o">></span><span class="p">),</span>
+ <span class="s">"attr1"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR1</span><span class="o">></span><span class="p">),</span>
+ <span class="s">"attr2"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR2</span><span class="o">></span><span class="p">),</span>
+ <span class="s">"plan"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">PLAN</span><span class="o">></span><span class="p">)</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="PHP SDK" data-lang="php" id="tab-2b5e8302-d7d7-4121-9e09-fe95226aabf7"> <div class="highlight php"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19</pre></td> <td class="code"><pre><span class="cp"><?php</span>
+<span class="k">require_once</span><span class="p">(</span><span class="s2">"vendor/autoload.php"</span><span class="p">);</span>
+<span class="k">use</span> <span class="nx">predictionio\EventClient</span><span class="p">;</span>
+
+<span class="nv">$client</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">EventClient</span><span class="p">(</span><span class="o"><</span><span class="nx">ACCESS</span> <span class="nx">KEY</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="nx">URL</span> <span class="nx">OF</span> <span class="nx">EVENTSERVER</span><span class="o">></span><span class="p">);</span>
+
+<span class="c1">// Set the 4 properties for a user
+</span><span class="nv">$client</span><span class="o">-></span><span class="na">createEvent</span><span class="p">(</span><span class="k">array</span><span class="p">(</span>
+ <span class="s1">'event'</span> <span class="o">=></span> <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'entityType'</span> <span class="o">=></span> <span class="s1">'user'</span><span class="p">,</span>
+ <span class="s1">'entityId'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">USER</span> <span class="nx">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">'attr0'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR0</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'attr1'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR1</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'attr2'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR2</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'plan'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">PLAN</span><span class="o">></span>
+ <span class="p">)</span>
+<span class="p">));</span>
+<span class="cp">?></span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Ruby SDK" data-lang="ruby" id="tab-69ffb397-0c6b-4037-b3e6-ec69b0e36575"> <div class="highlight ruby"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16</pre></td> <td class="code"><pre><span class="c1"># Create a client object.</span>
+<span class="n">client</span> <span class="o">=</span> <span class="no">PredictionIO</span><span class="o">::</span><span class="no">EventClient</span><span class="p">.</span><span class="nf">new</span><span class="p">(</span><span class="o"><</span><span class="no">ACCESS</span> <span class="no">KEY</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="no">URL</span> <span class="no">OF</span> <span class="no">EVENTSERVER</span><span class="o">></span><span class="p">)</span>
+
+<span class="c1"># Set the 4 properties for a user.</span>
+<span class="n">client</span><span class="p">.</span><span class="nf">create_event</span><span class="p">(</span>
+ <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'user'</span><span class="p">,</span>
+ <span class="o"><</span><span class="no">USER</span> <span class="no">ID</span><span class="o">></span><span class="p">,</span> <span class="p">{</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="p">{</span>
+ <span class="s1">'attr0'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">ATTR0</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'attr1'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">ATTR1</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'attr2'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">ATTR2</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'plan'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">PLAN</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span><span class="p">,</span>
+ <span class="p">}</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Java SDK" data-lang="java" id="tab-27bff9a7-bfe7-48c5-b72c-822f1b984a2e"> <div class="highlight java"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+<span class="kn">import</span> <span class="nn">org.apache.predictionio.Event</span><span class="o">;</span>
+<span class="kn">import</span> <span class="nn">org.apache.predictionio.EventClient</span><span class="o">;</span>
+
+<span class="n">EventClient</span> <span class="n">client</span> <span class="o">=</span> <span class="k">new</span> <span class="n">EventClient</span><span class="o">(<</span><span class="n">ACCESS</span> <span class="n">KEY</span><span class="o">>,</span> <span class="o"><</span><span class="n">URL</span> <span class="n">OF</span> <span class="n">EVENTSERVER</span><span class="o">>);</span>
+
+<span class="c1">// set the 4 properties for a user</span>
+<span class="n">Event</span> <span class="n">event</span> <span class="o">=</span> <span class="k">new</span> <span class="n">Event</span><span class="o">()</span>
+ <span class="o">.</span><span class="na">event</span><span class="o">(</span><span class="s">"$set"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityType</span><span class="o">(</span><span class="s">"user"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityId</span><span class="o">(<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">>)</span>
+ <span class="o">.</span><span class="na">properties</span><span class="o">(</span><span class="n">ImmutableMap</span><span class="o">.<</span><span class="n">String</span><span class="o">,</span> <span class="n">Object</span><span class="o">></span><span class="n">of</span><span class="o">(</span>
+ <span class="s">"attr0"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR0</span><span class="o">>,</span>
+ <span class="s">"attr1"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR1</span><span class="o">>,</span>
+ <span class="s">"attr2"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR2</span><span class="o">>,</span>
+ <span class="s">"plan"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">PLAN</span><span class="o">></span>
+ <span class="o">));</span>
+<span class="n">client</span><span class="o">.</span><span class="na">createEvent</span><span class="o">(</span><span class="n">event</span><span class="o">);</span>
+</pre></td> </tr></tbody></table> </div> </div> </div> <p>Note that you can also set the properties for the user with multiple <code>$set</code> events (They will be aggregated during engine training).</p><p>To set properties "attr0", "attr1" and "attr2", and "plan" for user "u1" at different time, you can send follwing <code>$set</code> events for the user. To send these events, run the following <code>curl</code> command:</p><div class="tabs"> <ul class="control"> <li data-lang="json"><a href="#tab-0ef1e4f0-0c43-4594-b2d4-d1f2b4d9f262">REST API</a></li> <li data-lang="python"><a href="#tab-9f56acaa-d053-4a41-885a-c99a668eaff4">Python SDK</a></li> <li data-lang="php"><a href="#tab-6432c77d-f7e6-4b69-becf-d7d7835e2771">PHP SDK</a></li> <li data-lang="ruby"><a href="#tab-be919594-89b8-4560-a560-a9ce150e9d1f">Ruby SDK</a></li> <li data-lang="java"><a href="#tab-317a929c-bb30-4ff1-b8bc-492b765adf07">Java SDK</a></li> </ul> <div data-tab
="REST API" data-lang="json" id="tab-0ef1e4f0-0c43-4594-b2d4-d1f2b4d9f262"> <div class="highlight shell"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+-H <span class="s2">"Content-Type: application/json"</span> <span class="se">\</span>
+-d <span class="s1">'{
+ "event" : "$set",
+ "entityType" : "user",
+ "entityId" : "u1",
+ "properties" : {
+ "attr0" : 0
+ }
+ "eventTime" : "2014-11-02T09:39:45.618-08:00"
+}'</span>
+
+<span class="gp">$ </span>curl -i -X POST http://localhost:7070/events.json?accessKey<span class="o">=</span><span class="nv">$ACCESS_KEY</span> <span class="se">\</span>
+-H <span class="s2">"Content-Type: application/json"</span> <span class="se">\</span>
+-d <span class="s1">'{
+ "event" : "$set",
+ "entityType" : "user",
+ "entityId" : "u1",
+ "properties" : {
+ "attr1" : 1,
+ "attr2": 0
+ }
+ "eventTime" : "2014-11-02T09:39:45.618-08:00"
+}'</span>
+
+<span class="gp">$ </span>curl -i -X POST http://localhost:7070/events.json?accessKey<span class="o">=</span><span class="nv">$ACCESS_KEY</span> <span class="se">\</span>
+-H <span class="s2">"Content-Type: application/json"</span> <span class="se">\</span>
+-d <span class="s1">'{
+ "event" : "$set",
+ "entityType" : "user",
+ "entityId" : "u1",
+ "properties" : {
+ "plan" : 1
+ }
+ "eventTime" : "2014-11-02T09:39:45.618-08:00"
+}'</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Python SDK" data-lang="python" id="tab-9f56acaa-d053-4a41-885a-c99a668eaff4"> <div class="highlight python"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+<span class="n">client</span><span class="o">.</span><span class="n">create_event</span><span class="p">(</span>
+ <span class="n">event</span><span class="o">=</span><span class="s">"$set"</span><span class="p">,</span>
+ <span class="n">entity_type</span><span class="o">=</span><span class="s">"user"</span><span class="p">,</span>
+ <span class="n">entity_id</span><span class="o">=<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="n">properties</span><span class="o">=</span> <span class="p">{</span>
+ <span class="s">"attr0"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR0</span><span class="o">></span><span class="p">)</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+<span class="n">client</span><span class="o">.</span><span class="n">create_event</span><span class="p">(</span>
+ <span class="n">event</span><span class="o">=</span><span class="s">"$set"</span><span class="p">,</span>
+ <span class="n">entity_type</span><span class="o">=</span><span class="s">"user"</span><span class="p">,</span>
+ <span class="n">entity_id</span><span class="o">=<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="n">properties</span><span class="o">=</span> <span class="p">{</span>
+ <span class="s">"attr1"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR1</span><span class="o">></span><span class="p">),</span>
+ <span class="s">"attr2"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR2</span><span class="o">></span><span class="p">)</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+
+<span class="n">client</span><span class="o">.</span><span class="n">create_event</span><span class="p">(</span>
+ <span class="n">event</span><span class="o">=</span><span class="s">"$set"</span><span class="p">,</span>
+ <span class="n">entity_type</span><span class="o">=</span><span class="s">"user"</span><span class="p">,</span>
+ <span class="n">entity_id</span><span class="o">=<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="n">properties</span><span class="o">=</span> <span class="p">{</span>
+ <span class="s">"plan"</span> <span class="p">:</span> <span class="nb">int</span><span class="p">(</span><span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">PLAN</span><span class="o">></span><span class="p">)</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="PHP SDK" data-lang="php" id="tab-6432c77d-f7e6-4b69-becf-d7d7835e2771"> <div class="highlight php"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+
+<span class="c1">// You may also set the properties one by one
+</span><span class="nv">$client</span><span class="o">-></span><span class="na">createEvent</span><span class="p">(</span><span class="k">array</span><span class="p">(</span>
+ <span class="s1">'event'</span> <span class="o">=></span> <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'entityType'</span> <span class="o">=></span> <span class="s1">'user'</span><span class="p">,</span>
+ <span class="s1">'entityId'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">USER</span> <span class="nx">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">'attr0'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR0</span><span class="o">></span>
+ <span class="p">)</span>
+<span class="p">));</span>
+
+<span class="nv">$client</span><span class="o">-></span><span class="na">createEvent</span><span class="p">(</span><span class="k">array</span><span class="p">(</span>
+ <span class="s1">'event'</span> <span class="o">=></span> <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'entityType'</span> <span class="o">=></span> <span class="s1">'user'</span><span class="p">,</span>
+ <span class="s1">'entityId'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">USER</span> <span class="nx">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">'attr1'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR1</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'attr2'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">ATTR2</span><span class="o">></span>
+ <span class="p">)</span>
+<span class="p">));</span>
+
+<span class="nv">$client</span><span class="o">-></span><span class="na">createEvent</span><span class="p">(</span><span class="k">array</span><span class="p">(</span>
+ <span class="s1">'event'</span> <span class="o">=></span> <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'entityType'</span> <span class="o">=></span> <span class="s1">'user'</span><span class="p">,</span>
+ <span class="s1">'entityId'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">USER</span> <span class="nx">ID</span><span class="o">></span><span class="p">,</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="k">array</span><span class="p">(</span>
+ <span class="s1">'plan'</span> <span class="o">=></span> <span class="o"><</span><span class="nx">VALUE</span> <span class="nx">OF</span> <span class="nx">PLAN</span><span class="o">></span>
+ <span class="p">)</span>
+<span class="p">));</span>
+
+<span class="cp">?></span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Ruby SDK" data-lang="ruby" id="tab-be919594-89b8-4560-a560-a9ce150e9d1f"> <div class="highlight ruby"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+<span class="n">client</span><span class="p">.</span><span class="nf">create_event</span><span class="p">(</span>
+ <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'user'</span><span class="p">,</span>
+ <span class="o"><</span><span class="no">USER</span> <span class="no">ID</span><span class="o">></span><span class="p">,</span> <span class="p">{</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="p">{</span>
+ <span class="s1">'attr0'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">ATTR0</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span>
+ <span class="p">}</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+
+<span class="n">client</span><span class="p">.</span><span class="nf">create_event</span><span class="p">(</span>
+ <span class="s1">'$set'</span><span class="p">,</span>
+ <span class="s1">'user'</span><span class="p">,</span>
+ <span class="o"><</span><span class="no">USER</span> <span class="no">ID</span><span class="o">></span><span class="p">,</span> <span class="p">{</span>
+ <span class="s1">'properties'</span> <span class="o">=></span> <span class="p">{</span>
+ <span class="s1">'attr1'</span> <span class="o">=></span> <span class="o"><</span><span class="no">VALUE</span> <span class="no">OF</span> <span class="no">ATTR1</span> <span class="p">(</span><span class="n">integer</span><span class="p">)</span><span class="o">></span><span class="p">,</span>
+ <span class="p">}</span>
+ <span class="p">}</span>
+<span class="p">)</span>
+
+<span class="c1"># Etc...</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Java SDK" data-lang="java" id="tab-317a929c-bb30-4ff1-b8bc-492b765adf07"> <div class="highlight java"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
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+<span class="n">client</span><span class="o">.</span><span class="na">createEvent</span><span class="o">(</span><span class="k">new</span> <span class="n">Event</span><span class="o">()</span>
+ <span class="o">.</span><span class="na">event</span><span class="o">(</span><span class="s">"$set"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityType</span><span class="o">(</span><span class="s">"user"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityId</span><span class="o">(<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">>)</span>
+ <span class="o">.</span><span class="na">property</span><span class="o">(</span><span class="s">"attr0"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR0</span><span class="o">>));</span>
+<span class="n">client</span><span class="o">.</span><span class="na">createEvent</span><span class="o">(</span><span class="k">new</span> <span class="n">Event</span><span class="o">()</span>
+ <span class="o">.</span><span class="na">event</span><span class="o">(</span><span class="s">"$set"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityType</span><span class="o">(</span><span class="s">"user"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityId</span><span class="o">(<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">>)</span>
+ <span class="o">.</span><span class="na">property</span><span class="o">(</span><span class="s">"attr1"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR1</span><span class="o">>)</span>
+ <span class="o">.</span><span class="na">property</span><span class="o">(</span><span class="s">"attr2"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">ATTR2</span><span class="o">>));</span>
+<span class="n">client</span><span class="o">.</span><span class="na">createEvent</span><span class="o">(</span><span class="k">new</span> <span class="n">Event</span><span class="o">()</span>
+ <span class="o">.</span><span class="na">event</span><span class="o">(</span><span class="s">"$set"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityType</span><span class="o">(</span><span class="s">"user"</span><span class="o">)</span>
+ <span class="o">.</span><span class="na">entityId</span><span class="o">(<</span><span class="n">USER</span> <span class="n">ID</span><span class="o">>)</span>
+ <span class="o">.</span><span class="na">property</span><span class="o">(</span><span class="s">"plan"</span><span class="o">,</span> <span class="o"><</span><span class="n">VALUE</span> <span class="n">OF</span> <span class="n">PLAN</span><span class="o">>));</span>
+</pre></td> </tr></tbody></table> </div> </div> </div> <p>The properties of the <code>user</code> can be set, unset, or delete by special events <strong>$set</strong>, <strong>$unset</strong> and <strong>$delete</strong>. Please refer to <a href="/datacollection/eventapi/#note-about-properties">Event API</a> for more details of using these events.</p><p><h3 id='query-event-server' class='header-anchors'>Query Event Server</h3><p>Now let's query the EventServer and see if these events are imported successfully.</p><p>Go to following URL with your browser:</p><p><code><a href="http://localhost:7070/events.json?accessKey=&lt;YOUR_ACCESS_KEY">http://localhost:7070/events.json?accessKey=&lt;YOUR_ACCESS_KEY</a>></code></p><p>or run the following command in terminal:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>curl -i
-X GET <span class="s2">"<a href="http://localhost:7070/events.json?accessKey=">http://localhost:7070/events.json?accessKey=</a></span><span class="nv">$ACCESS_KEY</span><span class="s2">"</span>
+</pre></td></tr></tbody></table> </div> <div class="alert-message note"><p>Note that you should quote the entire URL by using single or double quotes when you run the <code>curl</code> command.</p></div><p>It should return the imported events in JSON format. You can refer to <a href="/datacollection/eventapi/#debugging-recipes">Event Server Debugging Recipes</a> for more different ways to query Event Server.</p></p><h3 id='import-more-sample-data' class='header-anchors'>Import More Sample Data</h3><p>This engine requires more data in order to train a useful model. Instead of sending more events one by one in real time, for quickstart demonstration purpose, we are going to use a script to import more events in batch.</p> <p>A Python import script <code>import_eventserver.py</code> is provided to import the data to Event Server using Python SDK. Please upgrade to the latest Python SDK.</p><p>First, you will need to install Python SDK in order to run the sample data import script. To i
nstall Python SDK, run:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pip install predictionio
+</pre></td></tr></tbody></table> </div> <p>or</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>easy_install predictionio
+</pre></td></tr></tbody></table> </div> <div class="alert-message note"><p>You may need <code>sudo</code> access if you have permission issue. (ie. <code>sudo pip install predictionio</code>)</p></div> <p><a href="#"></a></p> <p>Make sure you are under the <code>MyClassification</code> directory. Replace the value of access_key parameter by your <strong>Access Key</strong> and run:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2</pre></td><td class="code"><pre><span class="gp">$ </span><span class="nb">cd </span>MyClassification
+<span class="gp">$ </span>python data/import_eventserver.py --access_key obbiTuSOiMzyFKsvjjkDnWk1vcaHjcjrv9oT3mtN3y6fOlpJoVH459O1bPmDzCdv
+</pre></td></tr></tbody></table> </div> <p>You should see the following output:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2</pre></td><td class="code"><pre>Importing data...
+6 events are imported.
+</pre></td></tr></tbody></table> </div> <p>Now the training data is stored as events inside the Event Store.</p> <p><a href="#"></a></p><div class="alert-message warning"><p>If you see error <strong>TypeError: <strong>init</strong>() got an unexpected keyword argument 'access_key'</strong>, please update the Python SDK to the latest version.</p></div><p>You can query the event server again as described previously to check the imported events.</p> <h2 id='5.-deploy-the-engine-as-a-service' class='header-anchors'>5. Deploy the Engine as a Service</h2><p>Now you can build, train, and deploy the engine. First, make sure you are under the <code>MyClassification</code> directory.</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span><span class="nb">cd </span>MyClassification
+</pre></td></tr></tbody></table> </div> <h3 id='engine.json' class='header-anchors'>Engine.json</h3><p>Under the directory, you should find an <code>engine.json</code> file; this is where you specify parameters for the engine.</p><div class="alert-message warning"><p>Modify this file to make sure the <code>appName</code> parameter match your <strong>App Name</strong> you created earlier (e.g. "MyApp1" if you follow the quickstart).</p></div><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7</pre></td><td class="code"><pre> ...
+ <span class="s2">"datasource"</span>: <span class="o">{</span>
+ <span class="s2">"params"</span> : <span class="o">{</span>
+ <span class="s2">"appName"</span>: <span class="s2">"MyApp1"</span>
+ <span class="o">}</span>
+ <span class="o">}</span>,
+ ...
+</pre></td></tr></tbody></table> </div> <div class="alert-message note"><p>You may see <code>appId</code> in engine.json instead, which means you are using old template. In this case, make sure the <code>appId</code> defined in the file match your <strong>App ID</strong>. Alternatively, you can download the latest version of the template or follow our <a href="/resources/upgrade/#upgrade-to-0.9.2">upgrade instructions</a> to modify the template to use <code>appName</code> as parameter.</p></div> <p><a href="#"></a></p> <p><h3 id='building' class='header-anchors'>Building</h3><p>Start with building your <em>MyClassification</em> engine. Run the following command:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio build --verbose
+</pre></td></tr></tbody></table> </div> <p>This command should take few minutes for the first time; all subsequent builds should be less than a minute. You can also run it without <code>--verbose</code> if you don't want to see all the log messages.</p><p>Upon successful build, you should see a console message similar to the following.</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="o">[</span>INFO] <span class="o">[</span>Console<span class="nv">$]</span> Your engine is ready <span class="k">for </span>training.
+</pre></td></tr></tbody></table> </div> <h3 id='training-the-predictive-model' class='header-anchors'>Training the Predictive Model</h3><p>To train your engine, run the following command:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio train
+</pre></td></tr></tbody></table> </div> <p>When your engine is trained successfully, you should see a console message similar to the following.</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="o">[</span>INFO] <span class="o">[</span>CoreWorkflow<span class="nv">$]</span> Training completed successfully.
+</pre></td></tr></tbody></table> </div> <h3 id='deploying-the-engine' class='header-anchors'>Deploying the Engine</h3><p>Now your engine is ready to deploy. Run:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="gp">$ </span>pio deploy
+</pre></td></tr></tbody></table> </div> <p>When the engine is deployed successfully and running, you should see a console message similar to the following:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2</pre></td><td class="code"><pre><span class="o">[</span>INFO] <span class="o">[</span>HttpListener] Bound to /0.0.0.0:8000
+<span class="o">[</span>INFO] <span class="o">[</span>MasterActor] Bind successful. Ready to serve.
+</pre></td></tr></tbody></table> </div> <p>Do not kill the deployed engine process.</p><p>By default, the deployed engine binds to <a href="http://localhost:8000"><a href="http://localhost:8000">http://localhost:8000</a></a>. You can visit that page in your web browser to check its status.</p><p><img alt="Engine Status" src="/images/engine-server-3246414b.png"/></p></p><h2 id='6.-use-the-engine' class='header-anchors'>6. Use the Engine</h2><p>Now, You can try to retrieve predicted results. For example, to predict the label (i.e. <em>plan</em> in this case) of a user with attr0=2, attr1=0 and attr2=0, you send this JSON <code>{ "attr0":2, "attr1":0, "attr2":0 }</code> to the deployed engine and it will return a JSON of the predicted plan. Simply send a query by making a HTTP request or through the <code>EngineClient</code> of an SDK.</p><p>With the deployed engine running, open another temrinal and run the following <code>curl</code> command or use SDK t
o send the query:</p><div class="tabs"> <ul class="control"> <li data-lang="bash"><a href="#tab-91e38c71-543b-41f3-943c-567abac412ab">REST API</a></li> <li data-lang="python"><a href="#tab-d9e0dec8-ed2c-4b94-9de0-4d932369dba6">Python SDK</a></li> <li data-lang="php"><a href="#tab-9c60b874-e9ff-448a-96f3-05aaca1834f3">PHP SDK</a></li> <li data-lang="ruby"><a href="#tab-c9a4ebca-3823-4027-8e93-c3820b16e0fd">Ruby SDK</a></li> <li data-lang="java"><a href="#tab-c98dbcaa-493a-4416-98a3-0b22b3d212a6">Java SDK</a></li> </ul> <div data-tab="REST API" data-lang="bash" id="tab-91e38c71-543b-41f3-943c-567abac412ab"> <div class="highlight shell"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3</pre></td> <td class="code"><pre><span class="gp">$ </span>curl -H <span class="s2">"Content-Type: application/json"</span> <span class="se">\</span>
+-d <span class="s1">'{ "attr0":2, "attr1":0, "attr2":0 }'</span> http://localhost:8000/queries.json
+
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Python SDK" data-lang="python" id="tab-d9e0dec8-ed2c-4b94-9de0-4d932369dba6"> <div class="highlight python"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3</pre></td> <td class="code"><pre><span class="kn">import</span> <span class="nn">predictionio</span>
+<span class="n">engine_client</span> <span class="o">=</span> <span class="n">predictionio</span><span class="o">.</span><span class="n">EngineClient</span><span class="p">(</span><span class="n">url</span><span class="o">=</span><span class="s">"http://localhost:8000"</span><span class="p">)</span>
+<span class="k">print</span> <span class="n">engine_client</span><span class="o">.</span><span class="n">send_query</span><span class="p">({</span><span class="s">"attr0"</span><span class="p">:</span><span class="mi">2</span><span class="p">,</span> <span class="s">"attr1"</span><span class="p">:</span><span class="mi">0</span><span class="p">,</span> <span class="s">"attr2"</span><span class="p">:</span><span class="mi">0</span><span class="p">})</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="PHP SDK" data-lang="php" id="tab-9c60b874-e9ff-448a-96f3-05aaca1834f3"> <div class="highlight php"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10</pre></td> <td class="code"><pre><span class="cp"><?php</span>
+<span class="k">require_once</span><span class="p">(</span><span class="s2">"vendor/autoload.php"</span><span class="p">);</span>
+<span class="k">use</span> <span class="nx">predictionio\EngineClient</span><span class="p">;</span>
+
+<span class="nv">$client</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">EngineClient</span><span class="p">(</span><span class="s1">'http://localhost:8000'</span><span class="p">);</span>
+
+<span class="nv">$response</span> <span class="o">=</span> <span class="nv">$client</span><span class="o">-></span><span class="na">sendQuery</span><span class="p">(</span><span class="k">array</span><span class="p">(</span><span class="s1">'attr0'</span><span class="o">=></span> <span class="mi">2</span><span class="p">,</span> <span class="s1">'attr1'</span> <span class="o">=></span> <span class="mi">0</span><span class="p">,</span> <span class="s1">'attr2'</span> <span class="o">=></span> <span class="mi">0</span><span class="p">));</span>
+<span class="nb">print_r</span><span class="p">(</span><span class="nv">$response</span><span class="p">);</span>
+
+<span class="cp">?></span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Ruby SDK" data-lang="ruby" id="tab-c9a4ebca-3823-4027-8e93-c3820b16e0fd"> <div class="highlight ruby"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7</pre></td> <td class="code"><pre><span class="c1"># Create client object.</span>
+<span class="n">client</span> <span class="o">=</span> <span class="no">PredictionIO</span><span class="o">::</span><span class="no">EngineClient</span><span class="p">.</span><span class="nf">new</span><span class="p">(</span><span class="o"><</span><span class="no">ENGINE</span> <span class="no">DEPLOY</span> <span class="no">URL</span><span class="o">></span><span class="p">)</span>
+
+<span class="c1"># Query PredictionIO.</span>
+<span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="p">.</span><span class="nf">send_query</span><span class="p">(</span><span class="s1">'attr0'</span> <span class="o">=></span> <span class="mi">2</span><span class="p">,</span> <span class="s1">'attr1'</span> <span class="o">=></span> <span class="mi">0</span><span class="p">,</span> <span class="s1">'attr2'</span> <span class="o">=></span> <span class="mi">0</span><span class="p">)</span>
+
+<span class="nb">puts</span> <span class="n">response</span>
+</pre></td> </tr></tbody></table> </div> </div> <div data-tab="Java SDK" data-lang="java" id="tab-c98dbcaa-493a-4416-98a3-0b22b3d212a6"> <div class="highlight java"> <table style="border-spacing: 0"><tbody><tr> <td class="gutter gl" style="text-align: right"><pre class="lineno">1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13</pre></td> <td class="code"><pre><span class="kn">import</span> <span class="nn">com.google.common.collect.ImmutableList</span><span class="o">;</span>
+<span class="kn">import</span> <span class="nn">com.google.common.collect.ImmutableMap</span><span class="o">;</span>
+<span class="kn">import</span> <span class="nn">com.google.gson.JsonObject</span><span class="o">;</span>
+
+<span class="kn">import</span> <span class="nn">org.apache.predictionio.EngineClient</span><span class="o">;</span>
+
+<span class="n">EngineClient</span> <span class="n">engineClient</span> <span class="o">=</span> <span class="k">new</span> <span class="n">EngineClient</span><span class="o">(<</span><span class="n">ENGINE</span> <span class="n">DEPLOY</span> <span class="n">URL</span><span class="o">>);</span>
+
+<span class="n">JsonObject</span> <span class="n">response</span> <span class="o">=</span> <span class="n">engineClient</span><span class="o">.</span><span class="na">sendQuery</span><span class="o">(</span><span class="n">ImmutableMap</span><span class="o">.<</span><span class="n">String</span><span class="o">,</span> <span class="n">Object</span><span class="o">></span><span class="n">of</span><span class="o">(</span>
+ <span class="s">"attr0"</span><span class="o">,</span> <span class="mi">2</span><span class="o">,</span>
+ <span class="s">"attr1"</span><span class="o">,</span> <span class="mi">0</span><span class="o">,</span>
+ <span class="s">"attr2"</span><span class="o">,</span> <span class="mi">0</span>
+ <span class="o">));</span>
+</pre></td> </tr></tbody></table> </div> </div> </div> <div class="alert-message warning"><p>The Query format is changed since version v0.3.1. If you are using old Classification template version v0.3.0 or earlier, the query format is array of feature values instead: <code>{ "features": [2, 0, 0] }</code>.</p></div><p>The following is sample JSON response:</p><div class="highlight shell"><table style="border-spacing: 0"><tbody><tr><td class="gutter gl" style="text-align: right"><pre class="lineno">1</pre></td><td class="code"><pre><span class="o">{</span><span class="s2">"label"</span>:0.0<span class="o">}</span>
+</pre></td></tr></tbody></table> </div> <p>Similarly, to predict the label (i.e. <em>plan</em> in this case) of a user with attr0=4, attr1=3 and attr2=8, you send this JSON <code>{ "attr0": 4, "attr1": 3, "attr2": 8] }</code> to the deployed engine and it will return a JSON of the predicted plan.</p><div class="alert-message warning"><p>For classification template version v0.3.0 or earlier, the query JSON would be <code>{ "features": [4, 3, 8] }</code>.</p></div><p><em>MyClassification</em> is now running.</p><div class="alert-message info"><p>To update the model periodically with new data, simply set up a cron job to call <code>pio train</code> and <code>pio deploy</code>. The engine will continue to serve prediction results during the re-train process. After the training is completed, <code>pio deploy</code> will automatically shutdown the existing engine server and bring up a new process on the same port.</p></div><div class="alert-message
info"><p><strong>Note that if you import a <em>large</em> data set</strong> and the training seems to be taking forever or getting stuck, it's likely that there is not enough executor memory. It's recommended to setup a Spark standalone cluster, you'll need to specify more driver and executor memory when training with a large data set. Please see <a href="/resources/faq/#engine-training">FAQ here</a> for instructions.</p></div> <p>Next, we are going to take a look at the engine architecture and explain how you can customize it completely.</p><h4 id='<a-href="/templates/classification/dase/">next:-dase-components-explained</a>' class='header-anchors' ><a href="/templates/classification/dase/">Next: DASE Components Explained</a></h4></div></div></div></div><footer><div class="container"><div class="seperator"></div><div class="row"><div class="col-md-6 col-xs-6 footer-link-column"><div class="footer-link-column-row"><h4>Community</h4><ul><li><a href="//docs.prediction.io/i
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