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Posted to issues@spark.apache.org by "Feynman Liang (JIRA)" <ji...@apache.org> on 2015/08/12 23:11:46 UTC
[jira] [Updated] (SPARK-9888) Update LDA User Guide

     [ https://issues.apache.org/jira/browse/SPARK-9888?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Feynman Liang updated SPARK-9888:
---------------------------------
    Description: 
LDA has received numerous updates in 1.5, including:
 * OnlineLDAOptimizer:
        * Asymmetric document-topic priors
        * Document-topic hyperparameter optimization
 * LocalLDAModel
        * predict
        * logPerplexity / logLikelihood
 * DistributedLDAModel:
        * topDocumentsPerTopic
        * topTopicsPerDoc
 * Save/load

It is important to note that OnlineLDAOptimizer=>LocalLDAModel and EMLDAOptimizer=>DistributedLDAModel now support different features. The user guide should document these differences.

  was:
LDA has received numerous updates in 1.5, including:
 * OnlineLDAOptimizer:
    * Asymmetric document-topic priors
    * Document-topic hyperparameter optimization
 * LocalLDAModel
    * predict
    * logPerplexity / logLikelihood
 * DistributedLDAModel
    * topDocumentsPerTopic
    * topTopicsPerDoc

It is important to note that OnlineLDAOptimizer=>LocalLDAModel and EMLDAOptimizer=>DistributedLDAModel now support different features. The user guide should document these differences.


> Update LDA User Guide
> ---------------------
>
>                 Key: SPARK-9888
>                 URL: https://issues.apache.org/jira/browse/SPARK-9888
>             Project: Spark
>          Issue Type: Documentation
>          Components: MLlib
>            Reporter: Feynman Liang
>             Fix For: 1.5.0
>
>
> LDA has received numerous updates in 1.5, including:
>  * OnlineLDAOptimizer:
>         * Asymmetric document-topic priors
>         * Document-topic hyperparameter optimization
>  * LocalLDAModel
>         * predict
>         * logPerplexity / logLikelihood
>  * DistributedLDAModel:
>         * topDocumentsPerTopic
>         * topTopicsPerDoc
>  * Save/load
> It is important to note that OnlineLDAOptimizer=>LocalLDAModel and EMLDAOptimizer=>DistributedLDAModel now support different features. The user guide should document these differences.



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