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From "Robin Anil (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAHOUT-605) Array returned by classifier.bayes.algorithm.CBayesAlgorithm.classifyDocument is sorted ascendant
Date Tue, 01 Mar 2011 11:48:37 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13000839#comment-13000839
] 

Robin Anil commented on MAHOUT-605:
-----------------------------------

Can you give a little bit more info about SinglyClassifer, the way its initializing the classifier
internally

> Array returned by classifier.bayes.algorithm.CBayesAlgorithm.classifyDocument is sorted
ascendant
> -------------------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-605
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-605
>             Project: Mahout
>          Issue Type: Bug
>          Components: Classification
>    Affects Versions: 0.4
>         Environment: Linux
>            Reporter: Robin Swezey
>            Assignee: Robin Anil
>            Priority: Minor
>              Labels: bayesian, classification
>             Fix For: 0.5
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> The array returned for a n-best call to classifyDocument is sorted ascendant instead
of descendant. 
> Ex:
> {quote}
> 47-best: [ClassifierResult\{category='香川県', score=32.28281232047167\},
> ClassifierResult\{category='宮崎県', score=32.28969992600906\}, ......,
> ClassifierResult\{category='愛知県', score=32.487981016587796\},
> ClassifierResult\{category='東京都', score=32.49189358054859\},
> ClassifierResult\{category='北海道', score=32.49811200756193\}]
> {quote}
> (classification of documents for Japanese prefectures)
> Inside the classifyDocument method, just before the return statement we found this line:
> {quote}
> Collections.reverse(result);
> {quote}
> Is this a mistake or a design choice? (we are not sure, hence the "Minor" priority)

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