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https://issues.apache.org/jira/browse/MAHOUT-1604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14250127#comment-14250127
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Pat Ferrel commented on MAHOUT-1604:
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I put it in with 
https://github.com/apache/mahout/commit/149c98592fe447c98dfb5afc67b5809725cc3056

This was the beginning of an attempt to create an all-dependencies jar starting 
from job.xml as a template. Since then you came out strongly against the idea 
and so I haven't been "putting it back" since then. Remove it if you want.

> Create a RowSimilarity for Spark
> --------------------------------
>
>                 Key: MAHOUT-1604
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1604
>             Project: Mahout
>          Issue Type: Bug
>          Components: CLI
>    Affects Versions: 1.0
>         Environment: Spark
>            Reporter: Pat Ferrel
>            Assignee: Pat Ferrel
>
> Using CooccurrenceAnalysis.cooccurrence create a driver that reads a text DRM 
> or two and produces LLR similarity/cross-similarity matrices.
> This will produce the same results as ItemSimilarity but take a Drm as input 
> instead of individual cells.
> The first version will only support LLR, other similarity measures will need 
> to be in separate Jiras



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