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Feynman Liang commented on SPARK-5571: -------------------------------------- [~a...@jivesoftware.com], are you still working on this? I wanted to point out [CountVectorizer|https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/CountVectorizerModel.scala] was recently merged and seems appropriate for this task. If you aren't working on this anymore, I would be happy to take this task. > LDA should handle text as well > ------------------------------ > > Key: SPARK-5571 > URL: https://issues.apache.org/jira/browse/SPARK-5571 > Project: Spark > Issue Type: Improvement > Components: MLlib > Affects Versions: 1.3.0 > Reporter: Joseph K. Bradley > > Latent Dirichlet Allocation (LDA) currently operates only on vectors of word > counts. It should also supporting training and prediction using text > (Strings). > This plan is sketched in the [original LDA design > doc|https://docs.google.com/document/d/1kSsDqTeZMEB94Bs4GTd0mvdAmduvZSSkpoSfn-seAzo/edit?usp=sharing]. > There should be: > * runWithText() method which takes an RDD with a collection of Strings (bags > of words). This will also index terms and compute a dictionary. > * dictionary parameter for when LDA is run with word count vectors > * prediction/feedback methods returning Strings (such as > describeTopicsAsStrings, which is commented out in LDA currently) -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org