Add "maxPreferencesPerItemConsidered" option to
o.a.m.cf.taste.hadoop.similarity.item.ItemSimilarityJob
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Key: MAHOUT-460
URL: https://issues.apache.org/jira/browse/MAHOUT-460
Project: Mahout
Issue Type: Improvement
Components: Collaborative Filtering
Reporter: Sebastian Schelter
Because "coocurrence algorithms ... scale in the square of the number of
occurrences most popular item" (Ted wrote that in a recent mail) we should
offer a parameter to the ItemSimilarity job that makes it limit the number of
considered preferences per item. RecommenderJob already has such an option.
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