grouplens/lenskit — pull request #579 by kluver (2014-04-22 18:16:54+00:00)
Title: fixed SnapshotNeighborFinder

SnapshotNeighborFinder was behaving differently from the LiveNeighborFinder, Turns out its similarities were all 1! (interestingly, this didn't substantially impact accuracy)

Anyways this pull requests fixes the bug.