Mahout
  1. Mahout
  2. MAHOUT-877

Enable the parallel ALS recommender to use implicit feedback data

    Details

    • Type: New Feature New Feature
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 0.6
    • Fix Version/s: 0.6
    • Labels:
      None

      Description

      Mahout's ParallelALSFactorizationJob offers a distributed matrix factorization for computing recommendations. The current implementation is only suited for explicit feedback data (ratings) unfortunately.

      The majority of usecases has to work with implicit feedback however. The paper "Collaborative Filtering for Implicit Feedback Datasets" http://research.yahoo.com/pub/2433 describes a closely related approach that is aimed at implicit feedback data and should easily be integratable into the current ParallelALSJob.

      1. MAHOUT-877.patch
        35 kB
        Sebastian Schelter

        Activity

        Sebastian Schelter created issue -
        Sebastian Schelter made changes -
        Field Original Value New Value
        Attachment MAHOUT-877.patch [ 12502899 ]
        Sebastian Schelter made changes -
        Status Open [ 1 ] Resolved [ 5 ]
        Fix Version/s 0.6 [ 12316364 ]
        Resolution Fixed [ 1 ]
        Hide
        Hudson added a comment -

        Integrated in Mahout-Quality #1161 (See https://builds.apache.org/job/Mahout-Quality/1161/)
        MAHOUT-877 Enable the parallel ALS recommender to use implicit feedback data

        ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1199171
        Files :

        • /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/ParallelALSFactorizationJob.java
        • /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java
        • /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/hadoop/als/ParallelALSFactorizationJobTest.java
        • /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/AlternateLeastSquaresSolver.java
        • /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/AlternatingLeastSquaresSolver.java
        • /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/ImplicitFeedbackAlternatingLeastSquaresSolver.java
        • /mahout/trunk/math/src/test/java/org/apache/mahout/math/als/AlternateLeastSquaresSolverTest.java
        • /mahout/trunk/math/src/test/java/org/apache/mahout/math/als/AlternatingLeastSquaresSolverTest.java
        Show
        Hudson added a comment - Integrated in Mahout-Quality #1161 (See https://builds.apache.org/job/Mahout-Quality/1161/ ) MAHOUT-877 Enable the parallel ALS recommender to use implicit feedback data ssc : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1199171 Files : /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/hadoop/als/ParallelALSFactorizationJob.java /mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/svd/ALSWRFactorizer.java /mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/hadoop/als/ParallelALSFactorizationJobTest.java /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/AlternateLeastSquaresSolver.java /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/AlternatingLeastSquaresSolver.java /mahout/trunk/math/src/main/java/org/apache/mahout/math/als/ImplicitFeedbackAlternatingLeastSquaresSolver.java /mahout/trunk/math/src/test/java/org/apache/mahout/math/als/AlternateLeastSquaresSolverTest.java /mahout/trunk/math/src/test/java/org/apache/mahout/math/als/AlternatingLeastSquaresSolverTest.java
        Sean Owen made changes -
        Status Resolved [ 5 ] Closed [ 6 ]
        Transition Time In Source Status Execution Times Last Executer Last Execution Date
        Open Open Resolved Resolved
        1h 56m 1 Sebastian Schelter 08/Nov/11 10:13
        Resolved Resolved Closed Closed
        93d 3h 46m 1 Sean Owen 09/Feb/12 14:00

          People

          • Assignee:
            Sebastian Schelter
            Reporter:
            Sebastian Schelter
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            Dates

            • Created:
              Updated:
              Resolved:

              Development