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From "Sean Owen (JIRA)" <>
Subject [jira] Commented: (MAHOUT-429) Add timestamp info to DataModel
Date Mon, 28 Jun 2010 11:45:50 GMT


Sean Owen commented on MAHOUT-429:

I'm working on this but having some trouble implementing FileDataModel cleanly, which is already
fairly complex. In particular it needs to support lines like:


and in addition still needs to support "update" semantics with some way of communicating deletes.

I don't think this can be done without changing the expected file input, which isn't great.
I'll think through the simplest way to handle this.

In the meantime I'd point out that it's entirely possible to load, store and use this info
outside the framework. That was the original intent anyway. I'd do that for now -- nothing
prevents this.

> Add timestamp info to DataModel
> -------------------------------
>                 Key: MAHOUT-429
>                 URL:
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Collaborative Filtering
>    Affects Versions: 0.3
>            Reporter: Sean Owen
>            Assignee: Sean Owen
>             Fix For: 0.4
> Per discussion on mailing list: would be good to add timestamp information to DataModel.

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