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https://issues.apache.org/jira/browse/MAHOUT-667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13020603#comment-13020603
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Chris Newell commented on MAHOUT-667:
-------------------------------------
A binary format would be fine. I guess there could be a performance advantage
and it would be easier to understand - if anyone wants to examine their factor
values. I'll have look at how serialization is done elsewhere in the framework.
> Persistent storage of factorizations in SVDRecommender
> ------------------------------------------------------
>
> Key: MAHOUT-667
> URL: https://issues.apache.org/jira/browse/MAHOUT-667
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Chris Newell
> Assignee: Sean Owen
> Priority: Minor
> Fix For: 0.4
>
> Attachments: persistent_svd.patch
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> As discussed previously (https://issues.apache.org/jira/browse/MAHOUT-640) it
> would be beneficial to provide a persistent storage mechanism for
> factorizations created by SVDRecommender (in package
> org.apache.mahout.cf.taste.impl.recommender.svd) as these can be time
> consuming to produce. It would also allow factorizations to be computed on
> one machine then distributed to other machines providing predictions,
> improving efficiency and scalability.
> Having a "persistence strategy" interface has been suggested that could be
> implemented as required. I'll try to post a outline proposal for discussion
> purposes in the next few days but any comments or suggestions would be very
> welcome.
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