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https://issues.apache.org/jira/browse/MAHOUT-605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved MAHOUT-605.
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Resolution: Not A Problem
Yes, the title suggests this is for CBayes. You are saying that lower scores
mean higher affinity, so, sorting from score low to high is sorting from high
affinity to low, and that is the intended (and likely expected) behavior,
right? Provisionally closing this, but, let's reopen if we've missed the point
here.
> 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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