Collection <GenericItemSimilarity.ItemItemSimilarity> correlations = ...;

// Construct the list of pre-computed correlations
Collection <GenericItemSimilarity.ItemItemSimilarity>  correlations = ...;

ItemSimilarity itemSimilarity  =  new GenericItemSimilarity(correlations);

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edited Nov 27 '11 at 3:37 Kevin 20.2k62251

asked Nov 27 '11 at 3:28 user1067549 161

A "generic" {@link ItemSimilarity} which takes a static list of precomputed item similarities and bases its responses on that alone. The values may have been precomputed offline by another process, stored in a file, and then read and fed into an instance
of this class.

GenericItemSimilarity

GenericItemSimilarity(ItemSimilarity otherSimilarity, DataModel dataModel)

DataModel dataModel = new FileDataModel(new File("path://to/file.csv"));
ItemSimilarity itemSimilarity = new LogLikelihoodSimilarity(dataModel);
ItemSimilarity itemSimilarity = new GenericItemSimilarity(itemSimilarity, dataModel);

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edited Nov 28 '11 at 14:26

answered Nov 27 '11 at 11:45 Daniel Zohar 310213

Collection<GenericItemSimilarity.ItemItemSimilarity> correlations =
new ArrayList<GenericItemSimilarity.ItemItemSimilarity>();
correlations.add(new GenericItemSimilarity.ItemItemSimilarity(1, 2, 0.5));
...