Uses of Interface
org.apache.mahout.cf.taste.similarity.UserSimilarity

Packages that use UserSimilarity

Package	Description
org.apache.mahout.cf.taste.impl.neighborhood
org.apache.mahout.cf.taste.impl.recommender
org.apache.mahout.cf.taste.impl.similarity

Uses of UserSimilarity in org.apache.mahout.cf.taste.impl.neighborhood

Constructors in org.apache.mahout.cf.taste.impl.neighborhood with parameters of type UserSimilarity

Constructor and Description
NearestNUserNeighborhood(int n, double minSimilarity, UserSimilarity userSimilarity, DataModel dataModel)
NearestNUserNeighborhood(int n, double minSimilarity, UserSimilarity userSimilarity, DataModel dataModel, double samplingRate)
NearestNUserNeighborhood(int n, UserSimilarity userSimilarity, DataModel dataModel)
ThresholdUserNeighborhood(double threshold, UserSimilarity userSimilarity, DataModel dataModel)
ThresholdUserNeighborhood(double threshold, UserSimilarity userSimilarity, DataModel dataModel, double samplingRate)

Uses of UserSimilarity in org.apache.mahout.cf.taste.impl.recommender

Methods in org.apache.mahout.cf.taste.impl.recommender that return UserSimilarity

Modifier and Type	Method and Description
UserSimilarity	GenericUserBasedRecommender.getSimilarity()

Constructors in org.apache.mahout.cf.taste.impl.recommender with parameters of type UserSimilarity

Constructor and Description
GenericBooleanPrefUserBasedRecommender(DataModel dataModel, UserNeighborhood neighborhood, UserSimilarity similarity)
GenericUserBasedRecommender(DataModel dataModel, UserNeighborhood neighborhood, UserSimilarity similarity)

Uses of UserSimilarity in org.apache.mahout.cf.taste.impl.similarity

Classes in org.apache.mahout.cf.taste.impl.similarity that implement UserSimilarity

Modifier and Type	Class and Description
class	CachingUserSimilarity Caches the results from an underlying UserSimilarity implementation.
class	CityBlockSimilarity Implementation of City Block distance (also known as Manhattan distance) - the absolute value of the difference of each direction is summed.
class	EuclideanDistanceSimilarity An implementation of a "similarity" based on the Euclidean "distance" between two users X and Y.
class	GenericUserSimilarity
class	LogLikelihoodSimilarity See http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.14.5962 and http://tdunning.blogspot.com/2008/03/surprise-and-coincidence.html.
class	PearsonCorrelationSimilarity An implementation of the Pearson correlation.
class	SpearmanCorrelationSimilarity Like PearsonCorrelationSimilarity, but compares relative ranking of preference values instead of preference values themselves.
class	TanimotoCoefficientSimilarity An implementation of a "similarity" based on the Tanimoto coefficient, or extended Jaccard coefficient.
class	UncenteredCosineSimilarity An implementation of the cosine similarity.

Constructors in org.apache.mahout.cf.taste.impl.similarity with parameters of type UserSimilarity

Constructor and Description
CachingUserSimilarity(UserSimilarity similarity, DataModel dataModel) Creates this on top of the given UserSimilarity.
CachingUserSimilarity(UserSimilarity similarity, int maxCacheSize) Creates this on top of the given UserSimilarity.
GenericUserSimilarity(UserSimilarity otherSimilarity, DataModel dataModel)
GenericUserSimilarity(UserSimilarity otherSimilarity, DataModel dataModel, int maxToKeep)