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https://issues.apache.org/jira/browse/MAHOUT-186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12763491#action_12763491
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Robin Anil commented on MAHOUT-186:
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Reply to Ted
I ran the code, and this is the result
[0.994991252160446, 0.9945536151314497, 0.999376415169616, 0.9968475047260047,
0.9984130174646184, 0.9912339517865715, 0.9941739318651063, 0.9916439528089621,
0.9908988967772393, 0.9881699208527764]
The data shows this, which is clearly not sorted
dec, inc, dec, inc, dec, inc, dec, dec, dec.
> Classifier PriorityQueue returns erroneous results
> --------------------------------------------------
>
> Key: MAHOUT-186
> URL: https://issues.apache.org/jira/browse/MAHOUT-186
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.1, 0.2
> Reporter: Robin Anil
> Assignee: Robin Anil
> Fix For: 0.2
>
> Attachments: MAHOUT-186.patch, MAHOUT-186.patch
>
>
> A simple test fails
> import org.apache.hadoop.util.PriorityQueue;
> PriorityQueue<ClassifierResult> queue = new ClassifierResultPriorityQueue(3);
> queue.insert(new ClassifierResult("label1", 5));
> queue.insert(new ClassifierResult("label2", 4));
> queue.insert(new ClassifierResult("label3", 3));
> queue.insert(new ClassifierResult("label4", 2));
> queue.insert(new ClassifierResult("label5", 1));
>
> assertEquals("Incorrect Size", 3, queue.size());
> log.info(queue.pop().toString());
> log.info(queue.pop().toString());
> log.info(queue.pop().toString());
> 09/10/07 16:58:39 INFO common.ClassifierResultPriorityQueueTest:
> ClassifierResult{category='label3', score=3.0}
> 09/10/07 16:58:39 INFO common.ClassifierResultPriorityQueueTest:
> ClassifierResult{category='label4', score=2.0}
> 09/10/07 16:58:39 INFO common.ClassifierResultPriorityQueueTest:
> ClassifierResult{category='label5', score=1.0}
> Expected label1 and label2 at the top
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