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From "Sebastian Schelter (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAHOUT-902) TanimotoCoefficientSimilarity should return Double.NaN for two items that have zero overlap
Date Tue, 29 Nov 2011 13:13:41 GMT
TanimotoCoefficientSimilarity should return Double.NaN for two items that have zero overlap
-------------------------------------------------------------------------------------------

                 Key: MAHOUT-902
                 URL: https://issues.apache.org/jira/browse/MAHOUT-902
             Project: Mahout
          Issue Type: Improvement
          Components: Collaborative Filtering
    Affects Versions: 0.6
            Reporter: Sebastian Schelter


org.apache.mahout.cf.taste.impl.similarity.TanimotoCoefficientSimilarity should return Double.NaN
for two items that have zero overlap. Please also provide a unit-test for this.

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