Package org.apache.mahout.math.als

Examples of org.apache.mahout.math.als.ImplicitFeedbackAlternatingLeastSquaresSolver.solve()

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                long itemID = itemIDsFromUser.nextLong();
                featureVectors.add(features.getItemFeatureColumn(itemIndex(itemID)));
              }

              Vector userFeatures = usesImplicitFeedback
                  ? implicitFeedbackSolver.solve(sparseUserRatingVector(userPrefs))
                  : AlternatingLeastSquaresSolver.solve(featureVectors, ratingVector(userPrefs), lambda, numFeatures);

              features.setFeatureColumnInU(userIndex(userID), userFeatures);
            }
          });
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                long userID = pref.getUserID();
                featureVectors.add(features.getUserFeatureColumn(userIndex(userID)));
              }

              Vector itemFeatures = usesImplicitFeedback
                  ? implicitFeedbackSolver.solve(sparseItemRatingVector(itemPrefs))
                  : AlternatingLeastSquaresSolver.solve(featureVectors, ratingVector(itemPrefs), lambda, numFeatures);

              features.setFeatureColumnInM(itemIndex(itemID), itemFeatures);
            }
          });
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  @Override
  protected void map(IntWritable userOrItemID, VectorWritable ratingsWritable, Context ctx)
    throws IOException, InterruptedException {
    ImplicitFeedbackAlternatingLeastSquaresSolver solver = getSharedInstance();
    uiOrmj.set(solver.solve(ratingsWritable.get()));
    ctx.write(userOrItemID, uiOrmj);
  }

}
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  @Override
  protected void map(IntWritable userOrItemID, VectorWritable ratingsWritable, Context ctx)
    throws IOException, InterruptedException {
    ImplicitFeedbackAlternatingLeastSquaresSolver solver = getSharedInstance();
    uiOrmj.set(solver.solve(ratingsWritable.get()));
    ctx.write(userOrItemID, uiOrmj);
  }

}
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                long itemID = itemIDsFromUser.nextLong();
                featureVectors.add(features.getItemFeatureColumn(itemIndex(itemID)));
              }

              Vector userFeatures = usesImplicitFeedback
                  ? implicitFeedbackSolver.solve(sparseUserRatingVector(userPrefs))
                  : AlternatingLeastSquaresSolver.solve(featureVectors, ratingVector(userPrefs), lambda, numFeatures);

              features.setFeatureColumnInU(userIndex(userID), userFeatures);
            }
          });
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                long userID = pref.getUserID();
                featureVectors.add(features.getUserFeatureColumn(userIndex(userID)));
              }

              Vector itemFeatures = usesImplicitFeedback
                  ? implicitFeedbackSolver.solve(sparseItemRatingVector(itemPrefs))
                  : AlternatingLeastSquaresSolver.solve(featureVectors, ratingVector(itemPrefs), lambda, numFeatures);

              features.setFeatureColumnInM(itemIndex(itemID), itemFeatures);
            }
          });
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  @Override
  protected void map(IntWritable userOrItemID, VectorWritable ratingsWritable, Context ctx)
    throws IOException, InterruptedException {
    ImplicitFeedbackAlternatingLeastSquaresSolver solver = getSharedInstance();
    uiOrmj.set(solver.solve(ratingsWritable.get()));
    ctx.write(userOrItemID, uiOrmj);
  }

}
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