Details

    • Type: Improvement Improvement
    • Status: Closed
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.4
    • Labels:
      None

      Description

      org.apache.mahout.cf.taste.impl.similarity.UncenteredCosineSimilarity only computes the cosine distance between those components of the vectors where both vectors have a value greater zero.

      This is inconsistent with the definition of the cosine (correct me if I'm wrong) and is inconsistent with the distributed cosine similarity computation.

      1. MAHOUT-389-3.patch
        53 kB
        Sebastian Schelter
      2. MAHOUT-389-2.patch
        53 kB
        Sebastian Schelter
      3. MAHOUT-389.patch
        2 kB
        Sebastian Schelter

        Activity

        Sean Owen made changes -
        Status Resolved [ 5 ] Closed [ 6 ]
        Sean Owen made changes -
        Status Open [ 1 ] Resolved [ 5 ]
        Assignee Sean Owen [ srowen ]
        Fix Version/s 0.4 [ 12314396 ]
        Resolution Fixed [ 1 ]
        Sebastian Schelter made changes -
        Attachment MAHOUT-389-3.patch [ 12443709 ]
        Sebastian Schelter made changes -
        Attachment MAHOUT-389-2.patch [ 12443707 ]
        Sean Owen made changes -
        Issue Type Bug [ 1 ] Improvement [ 4 ]
        Priority Major [ 3 ] Minor [ 4 ]
        Sebastian Schelter made changes -
        Field Original Value New Value
        Attachment MAHOUT-389.patch [ 12443585 ]
        Sebastian Schelter created issue -

          People

          • Assignee:
            Sean Owen
            Reporter:
            Sebastian Schelter
          • Votes:
            0 Vote for this issue
            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development