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Posted to dev@mahout.apache.org by "Mike Sokolov (JIRA)" <ji...@apache.org> on 2013/06/12 19:39:22 UTC

[jira] [Created] (MAHOUT-1257) performance improvement to LogLikehood

Mike Sokolov created MAHOUT-1257:
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             Summary: performance improvement to LogLikehood
                 Key: MAHOUT-1257
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1257
             Project: Mahout
          Issue Type: Improvement
          Components: Math
            Reporter: Mike Sokolov


This patch reduces the amount of computation required for LLR. It simplifies the math by canceling terms.  In a microbenchmark we saw an 18% run time improvement.

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