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  1. Mahout
  2. MAHOUT-362

Computation of pairwise cosine similarities for Item-Based Collaborative Filtering

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.4
    • Labels:
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      Description

      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)

        Attachments

        1. MAHOUT-362.patch
          51 kB
          Sebastian Schelter

          Activity

            People

            • Assignee:
              srowen Sean R. Owen
              Reporter:
              ssc Sebastian Schelter
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              Dates

              • Created:
                Updated:
                Resolved: