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https://issues.apache.org/jira/browse/SPARK-8515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16194074#comment-16194074
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Liang-Chi Hsieh commented on SPARK-8515:
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I'm working on a new ML attribute API which is supposed to solve the issues
like SPARK-19141 and SPARK-21926 and maybe SPARK-12886.
The basic attribute design is similar to previous API. But new API supports
sparse Vector attributes. So we don't need to keep every attributes in a Vector
column. The new API is also trimming down some unnecessary parts in previous
API.
cc [~mlnick]
> Improve ML attribute API
> ------------------------
>
> Key: SPARK-8515
> URL: https://issues.apache.org/jira/browse/SPARK-8515
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 1.4.0
> Reporter: Xiangrui Meng
> Labels: advanced
>
> In 1.4.0, we introduced ML attribute API to embed feature/label attribute
> info inside DataFrame's schema. However, the API is not very friendly to use.
> We should re-visit this API and see how we can improve it.
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