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Sean Owen commented on MAHOUT-902: ---------------------------------- Ah, right it affects the item-item computation in the non-distributed version too. Well I have a patch ready. I'll wait a bit until I post the 'answer' > 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 > Labels: MAHOUT_INTRO_CONTRIBUTE > > 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira