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Posted to dev@mahout.apache.org by "Sean Owen (Created) (JIRA)" <ji...@apache.org> on 2011/11/29 21:05:39 UTC
[jira] [Created] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Slope one doesn't write, read diff counts resulting in no recs
--------------------------------------------------------------
Key: MAHOUT-903
URL: https://issues.apache.org/jira/browse/MAHOUT-903
Project: Mahout
Issue Type: Bug
Components: Collaborative Filtering
Affects Versions: 0.5
Reporter: Sean Owen
Assignee: Sean Owen
Fix For: 0.6
An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
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[jira] [Commented] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "weeks (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161319#comment-13161319 ]
weeks commented on MAHOUT-903:
------------------------------
The patch on 01/Dec/11 works.
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch, MAHOUT-903.patch, MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
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[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Sean Owen (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-903:
-----------------------------
Attachment: MAHOUT-903.patch
One more go-round; need to handle inverse objects correctly
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch, MAHOUT-903.patch, MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Sean Owen (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-903:
-----------------------------
Attachment: MAHOUT-903.patch
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Sean Owen (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-903:
-----------------------------
Attachment: MAHOUT-903.patch
Different take: allow stdev output and thus use of weighting
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch, MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Sean Owen (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-903:
-----------------------------
Status: Patch Available (was: Open)
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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[jira] [Commented] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Hudson (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161405#comment-13161405 ]
Hudson commented on MAHOUT-903:
-------------------------------
Integrated in Mahout-Quality #1216 (See [https://builds.apache.org/job/Mahout-Quality/1216/])
MAHOUT-903 add diff details, read diff details
srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1209318
Files :
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/slopeone/FullRunningAverageAndStdDevWritable.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/slopeone/SlopeOneAverageDiffsJob.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/slopeone/SlopeOneDiffsToAveragesReducer.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/FixedRunningAverage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/FixedRunningAverageAndStdDev.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/FullRunningAverage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/FullRunningAverageAndStdDev.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/InvertedRunningAverage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/InvertedRunningAverageAndStdDev.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/RunningAverage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/RunningAverageAndStdDev.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/WeightedRunningAverage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/common/WeightedRunningAverageAndStdDev.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/slopeone/MemoryDiffStorage.java
* /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/slopeone/file/FileDiffStorage.java
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch, MAHOUT-903.patch, MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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[jira] [Updated] (MAHOUT-903) Slope one doesn't write, read diff
counts resulting in no recs
Posted by "Sean Owen (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAHOUT-903?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen updated MAHOUT-903:
-----------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
> Slope one doesn't write, read diff counts resulting in no recs
> --------------------------------------------------------------
>
> Key: MAHOUT-903
> URL: https://issues.apache.org/jira/browse/MAHOUT-903
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.5
> Reporter: Sean Owen
> Assignee: Sean Owen
> Fix For: 0.6
>
> Attachments: MAHOUT-903.patch, MAHOUT-903.patch, MAHOUT-903.patch
>
>
> An astute MiA reader points out that the FileDiffStorage class does not have a way to read diff counts, or the number of item-item pairs that resulted in the average diff. It is assumed to be 1, which causes it to be pruned quickly. The SlopeOneAverageDiffsJob needs to likewise output counts.
--
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