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https://issues.apache.org/jira/browse/MAHOUT-1737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suneel Marthi closed MAHOUT-1737.
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> H20 implementation of AewUnaryFunc physical operator
> ----------------------------------------------------
>
> Key: MAHOUT-1737
> URL: https://issues.apache.org/jira/browse/MAHOUT-1737
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.10.1
> Reporter: Dmitriy Lyubimov
> Assignee: Anand Avati
> Fix For: 0.10.2
>
>
> this physical operator allows to optimize elementwise expressions like
> `dlog(X * X) + 1` where elementwise function compositions are detected and
> fused into one physical operator by logical optimizer.
> This is an essential support.
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