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Posted to issues@spark.apache.org by "Joseph K. Bradley (JIRA)" <ji...@apache.org> on 2015/08/11 23:22:45 UTC
[jira] [Resolved] (SPARK-9788) LDA docConcentration, gammaShape 1.5
binary incompatibility fixes
[ https://issues.apache.org/jira/browse/SPARK-9788?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Joseph K. Bradley resolved SPARK-9788.
--------------------------------------
Resolution: Fixed
Fix Version/s: 1.5.0
Issue resolved by pull request 8077
[https://github.com/apache/spark/pull/8077]
> LDA docConcentration, gammaShape 1.5 binary incompatibility fixes
> -----------------------------------------------------------------
>
> Key: SPARK-9788
> URL: https://issues.apache.org/jira/browse/SPARK-9788
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Joseph K. Bradley
> Assignee: Feynman Liang
> Fix For: 1.5.0
>
>
> From [SPARK-9658]:
> 1. LDA.docConcentration
> It will be nice to keep the old APIs unchanged. Proposal:
> * Add “asymmetricDocConcentration” and revert docConcentration changes.
> * If the (internal) doc concentration vector is a single value, “getDocConcentration" returns it. If it is a constant vector, getDocConcentration returns the first item, and fails otherwise.
> 2. LDAModel.gammaShape
> This should be given a default value.
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