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https://issues.apache.org/jira/browse/MAHOUT-1566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014433#comment-14014433
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ASF GitHub Bot commented on MAHOUT-1566:
----------------------------------------
GitHub user dlyubimov reopened a pull request:
https://github.com/apache/mahout/pull/6
MAHOUT-1566 Regular ALS factorizer with convergence test
Few things happened here :
(1) default CacheHint for implicit optimizer checkpoint is changed to NONE
(used to be: MEMORY-ONLY).
(2) bug fixes in the AB' physical operator found.
(3) added implicit drm -> inCore conversion which allows ALS iteration in
its simplest form to look simply like
while (!stop && i < maxIterations) {
drmV = drmAt %*% drmU %*% solve(drmU.t %*% drmU)
drmU = drmA %*% drmV %*% solve(drmV.t %*% drmV)
...
i += 1
...
}
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dlyubimov/mahout MAHOUT-1566
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/mahout/pull/6.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6
----
commit c47995e74dce76e74bc4a58dbd473120da407dc0
Author: Dmitriy Lyubimov <[email protected]>
Date: 2014-05-30T04:32:23Z
ALS
commit 84949a533270cb2bfe735f85321706a424a950cf
Author: Dmitriy Lyubimov <[email protected]>
Date: 2014-05-31T00:36:00Z
Bug fixes, test ok
commit 4b525e5011c002bdb4eb37e27699dc1f89f63d63
Author: Dmitriy Lyubimov <[email protected]>
Date: 2014-05-31T00:43:31Z
print out iteration rmses in the test
commit 2c9ba249e7dc312c2919a60d43e781eae67c51a9
Author: Dmitriy Lyubimov <[email protected]>
Date: 2014-05-31T00:50:36Z
license
----
> Regular ALS factorizer with convergence test.
> ---------------------------------------------
>
> Key: MAHOUT-1566
> URL: https://issues.apache.org/jira/browse/MAHOUT-1566
> Project: Mahout
> Issue Type: Task
> Affects Versions: 0.9
> Reporter: Dmitriy Lyubimov
> Assignee: Dmitriy Lyubimov
> Priority: Trivial
> Fix For: 1.0
>
>
> ALS-related: let's start with unweighed, unregularized implementation.
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