List of userSimilarity() Examples

Examples of userSimilarity()

org.apache.mahout.cf.taste.impl.similarity.PearsonCorrelationSimilarity.userSimilarity()
org.apache.mahout.cf.taste.similarity.UserSimilarity.userSimilarity()

Returns the degree of similarity, of two users, based on the their preferences.
@param userID1 first user ID @param userID2 second user ID @return similarity between the two users, in [-1,1] @throws TasteException if an error occurs while accessing the data

Examples of org.apache.mahout.cf.taste.similarity.UserSimilarity.userSimilarity()

    UserSimilarity userSimilarityImpl = getUserSimilarity();


    while (usersIterable.hasNext()) {
      long otherUserID = usersIterable.next();
      if (userID != otherUserID) {
        double theSimilarity = userSimilarityImpl.userSimilarity(userID, otherUserID);
        if (!Double.isNaN(theSimilarity) && theSimilarity >= threshold) {
          neighborhood.add(otherUserID);
        }
      }
    }

View Full Code Here

Examples of org.apache.mahout.cf.taste.similarity.UserSimilarity.userSimilarity()

    for (long userID : theNeighborhood) {
      if (userID != theUserID) {
        // See GenericItemBasedRecommender.doEstimatePreference() too
        if (dataModel.getPreferenceValue(userID, itemID) != null) {
          foundAPref = true;
          totalSimilarity += similarity.userSimilarity(theUserID, userID);
        }
      }
    }
    return foundAPref ? totalSimilarity : Float.NaN;
  }

View Full Code Here

Examples of org.apache.mahout.cf.taste.similarity.UserSimilarity.userSimilarity()

    boolean foundAPref = false;
    for (long userID : theNeighborhood) {
      // See GenericItemBasedRecommender.doEstimatePreference() too
      if (userID != theUserID && dataModel.getPreferenceValue(userID, itemID) != null) {
        foundAPref = true;
        totalSimilarity += similarity.userSimilarity(theUserID, userID);
      }
    }
    return foundAPref ? totalSimilarity : Float.NaN;
  }

View Full Code Here

Examples of org.apache.mahout.cf.taste.similarity.UserSimilarity.userSimilarity()

    boolean foundAPref = false;
    for (long userID : theNeighborhood) {
      // See GenericItemBasedRecommender.doEstimatePreference() too
      if (userID != theUserID && dataModel.getPreferenceValue(userID, itemID) != null) {
        foundAPref = true;
        totalSimilarity += (float) similarity.userSimilarity(theUserID, userID);
      }
    }
    return foundAPref ? totalSimilarity : Float.NaN;
  }

View Full Code Here

0 1

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.