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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:25:17 UTC
[jira] [Updated] (SPARK-7857) IDF w/ minDocFreq on SparseVectors
results in literal zeros
[ https://issues.apache.org/jira/browse/SPARK-7857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon updated SPARK-7857:
--------------------------------
Labels: bulk-closed (was: )
> IDF w/ minDocFreq on SparseVectors results in literal zeros
> -----------------------------------------------------------
>
> Key: SPARK-7857
> URL: https://issues.apache.org/jira/browse/SPARK-7857
> Project: Spark
> Issue Type: Bug
> Components: MLlib
> Reporter: Karl Higley
> Priority: Minor
> Labels: bulk-closed
>
> When the IDF model's minDocFreq parameter is set to a non-zero threshold, the IDF for any feature below that threshold is set to zero. When the model is used to transform a set of SparseVectors containing that feature, the resulting SparseVectors contain entries whose values are zero. The zero entries should be omitted in order to simplify downstream processing.
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