Computation of pairwise cosine similarities for Item-Based Collaborative
Filtering
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Key: MAHOUT-362
URL: https://issues.apache.org/jira/browse/MAHOUT-362
Project: Mahout
Issue Type: New Feature
Components: Collaborative Filtering
Reporter: Sebastian Schelter
Provides a map/reduce job to precompute the pairwise cosine similarities
between the item vectors of the user-item-matrix.
The code uses a slightly modified version of the algorithm suggested in
"Elsayed et al: Pairwise Document Similarity in Large Collections with
MapReduce"
(http://www.umiacs.umd.edu/~jimmylin/publications/Elsayed_etal_ACL2008_short.pdf)
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