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From "Ted Dunning (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1518) Preprocessing for collaborative filtering with the Scala DSL
Date Tue, 22 Apr 2014 13:30:16 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976752#comment-13976752
] 

Ted Dunning commented on MAHOUT-1518:
-------------------------------------

[~ssc]

I would hope that the data frame (or a slice thereof) could act as a matrix.

> Preprocessing for collaborative filtering with the Scala DSL
> ------------------------------------------------------------
>
>                 Key: MAHOUT-1518
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1518
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Collaborative Filtering
>            Reporter: Sebastian Schelter
>            Assignee: Sebastian Schelter
>             Fix For: 1.0
>
>         Attachments: MAHOUT-1518.patch
>
>
> The aim here is to provide some easy-to-use machinery to enable the usage of the new
Cooccurrence Analysis code from MAHOUT-1464 with datasets represented as follows in a CSV
file with the schema _timestamp, userId, itemId, action_, e.g.
> {code}
> timestamp1, userIdString1, itemIdString1, “view"
> timestamp2, userIdString2, itemIdString1, “like"
> {code}



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