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Packages that use AbstractItemSimilarity | |
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org.apache.mahout.cf.taste.impl.similarity |
Uses of AbstractItemSimilarity in org.apache.mahout.cf.taste.impl.similarity |
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Subclasses of AbstractItemSimilarity in org.apache.mahout.cf.taste.impl.similarity | |
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CityBlockSimilarity
Implementation of City Block distance (also known as Manhattan distance) - the absolute value of the difference of each direction is summed. |
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EuclideanDistanceSimilarity
An implementation of a "similarity" based on the Euclidean "distance" between two users X and Y. |
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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. |
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PearsonCorrelationSimilarity
An implementation of the Pearson correlation. |
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TanimotoCoefficientSimilarity
An implementation of a "similarity" based on the Tanimoto coefficient, or extended Jaccard coefficient. |
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UncenteredCosineSimilarity
An implementation of the cosine similarity. |
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