Sebastian Schelter created MAHOUT-1251:
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Summary: Optimize MinHashMapper
Key: MAHOUT-1251
URL: https://issues.apache.org/jira/browse/MAHOUT-1251
Project: Mahout
Issue Type: Improvement
Components: Clustering
Reporter: Sebastian Schelter
Assignee: Sebastian Schelter
Fix For: 0.8
Remove unnecessary actions from MinHashMapper:
It does a unnecessary string comparison per non-zero element of each input
vector and it unnecessarily clones the input vector for each keyGroup
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