[jira] [Updated] (MAHOUT-941) Improve ConfusionMatrix statistics

["Lance Norskog (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lance Norskog updated MAHOUT-941:
---------------------------------

    Attachment: MAHOUT-941.patch

Prints and Accuracy and Reliability stats, plus standard deviation of reliability.

Accuracy = "Producer Accuracy", includes unclassified results.
Reliability = "User Accuracy", does not include unclassified results.
                
> Improve ConfusionMatrix statistics
> ----------------------------------
>
>                 Key: MAHOUT-941
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-941
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Classification
>            Reporter: Lance Norskog
>            Assignee: Robin Anil
>            Priority: Minor
>             Fix For: 0.8
>
>         Attachments: Bayes.zip, MAHOUT-941.patch, MAHOUT-941.patch, MAHOUT-941.patch, SGD.zip
>
>
> This patch adds more statistics to the ConfusionMatrix and RequestAnalyzer.
> # Add Kappa measure - a standard measure comparing a sample v.s. random assignment.
> # Add mean & standard deviation of individual labels - assist in identifying consistent mal-assignment v.s. high and low quality labels.
> Also, the SGD solver saves its model periodically to /tmp/news-groups-number. This patch moves those captures to the model/ output directory. (These intermediate models are interesting for tracking SGD incremental development.)

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