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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-9888) Update LDA User Guide
Date Mon, 17 Aug 2015 22:23:46 GMT

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

Apache Spark reassigned SPARK-9888:
-----------------------------------

    Assignee: Apache Spark  (was: Feynman Liang)

> 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
>            Assignee: Apache Spark
>             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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