UncenteredCosineSimilarity
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Key: MAHOUT-389
URL: https://issues.apache.org/jira/browse/MAHOUT-389
Project: Mahout
Issue Type: Bug
Components: Collaborative Filtering
Reporter: Sebastian Schelter
org.apache.mahout.cf.taste.impl.similarity.UncenteredCosineSimilarity only
computes the cosine distance between those components of the vectors where both
vectors have a value greater zero.
This is inconsistent with the definition of the cosine (correct me if I'm
wrong) and is inconsistent with the distributed cosine similarity computation.
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