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Posted to issues@madlib.apache.org by "Rahul Iyer (JIRA)" <ji...@apache.org> on 2016/03/01 19:46:18 UTC
[jira] [Updated] (MADLIB-927) Initial implementation of k-NN
[ https://issues.apache.org/jira/browse/MADLIB-927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rahul Iyer updated MADLIB-927:
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Description:
k-Nearest Neighbors is a simple algorithm based on finding nearest neighbors of data points in a metric feature space according to a specified distance function. It is considered one of the canonical algorithms of data science. It is a nonparametric method, which makes it applicable to a lot of real-world problems where the data doesn’t satisfy particular distribution assumptions. It can also be implemented as a lazy algorithm, which means there is no training phase where information in the data is condensed into coefficients, but there is a costly testing phase where all data (or some subset) is used to make predictions.
This JIRA involves implementing the naïve approach - i.e. compute the k nearest neighbors by going through all points.
was:
k-Nearest Neighbors is a very simple algorithm that is based on finding nearest neighbors of data points in a metric feature space according to a specified distance function. It is considered one of the canonical algorithms of data science. It is a nonparametric method, which makes it applicable to a lot of real-world problems, where the data doesn’t satisfy particular distribution assumptions. Also, it can be implemented as a lazy algorithm, which means there is no training phase where information in the data is condensed into coefficients, but there is a costly testing phase where all data is used to make predictions.
This JIRA involves implementing the naïve approach - i.e. compute the k nearest neighbors by going through all points.
> Initial implementation of k-NN
> ------------------------------
>
> Key: MADLIB-927
> URL: https://issues.apache.org/jira/browse/MADLIB-927
> Project: Apache MADlib
> Issue Type: New Feature
> Reporter: Rahul Iyer
> Labels: gsoc2016, starter
>
> k-Nearest Neighbors is a simple algorithm based on finding nearest neighbors of data points in a metric feature space according to a specified distance function. It is considered one of the canonical algorithms of data science. It is a nonparametric method, which makes it applicable to a lot of real-world problems where the data doesn’t satisfy particular distribution assumptions. It can also be implemented as a lazy algorithm, which means there is no training phase where information in the data is condensed into coefficients, but there is a costly testing phase where all data (or some subset) is used to make predictions.
> This JIRA involves implementing the naïve approach - i.e. compute the k nearest neighbors by going through all points.
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