We already have a scala DSL for Mahout Math as well as bindings to
Spark, which both are written in Scala.
It would need some discussion, but I think that we should accept scala
code as part of mahout.
--sebastian
On 03/11/2014 09:08 PM, Adam Ilardi (JIRA) wrote:
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https://issues.apache.org/jira/browse/MAHOUT-1447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930866#comment-13930866
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Adam Ilardi commented on MAHOUT-1447:
-------------------------------------
It's written in scala and pretty ebay specific @ the moment. Are there plans to
include scala sources with mahout in the future?
ImplicitFeedbackAlternatingLeastSquaresSolver tests and features
----------------------------------------------------------------
Key: MAHOUT-1447
URL: https://issues.apache.org/jira/browse/MAHOUT-1447
Project: Mahout
Issue Type: Improvement
Components: Collaborative Filtering
Affects Versions: 0.9
Reporter: Adam Ilardi
Assignee: Sebastian Schelter
Priority: Minor
Labels: newbie, patch, performance
Fix For: 1.0
Attachments: MAHOUT-1447.patch
I added a test case for the YtY calculation code
I removed the indexes.quickSort() in the YtY calculation because I don't think
it's necessary and the test cases passed without it. The order shouldn't matter
since you're adding the scalers together. Correct me if i'm wrong.
In Factorization.java I added methods to access the iterator of item ids and
user ids directly. This saves memory when using classes like TopItems.java when
you don't have the DataModel class in memory as well.
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