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  1. Mahout
  2. MAHOUT-877

Enable the parallel ALS recommender to use implicit feedback data

    Details

    • Type: New Feature
    • Status: Closed
    • Priority: 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

        Hide
        hudson 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 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

          People

          • Assignee:
            ssc Sebastian Schelter
            Reporter:
            ssc Sebastian Schelter
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            Dates

            • Created:
              Updated:
              Resolved:

              Development