Yes, try LogLikelihoodSimilarity too. You can feed this similarity to GenericItemSimilarity to have it precompute and store all possible similarities, yes: http://lucene.apache.org/mahout/javadoc/core/org/apache/mahout/cf/taste/impl/similarity/GenericItemSimilarity.html#GenericItemSimilarity(org.apache.mahout.cf.taste.similarity.ItemSimilarity, org.apache.mahout.cf.taste.model.DataModel)
You can also just use CachingItemSimilarity around it to cache, rather than precompute, which might be smarter. On Mon, Jan 25, 2010 at 3:35 PM, Nishant Chandra <[email protected]> wrote: > My query is regarding taste APIs. > > If I have binary dataset (i.e. preference is 0 or 1), are there models > other than TanimotoCoefficient? > > Also, with the current implementation, is it possible to precompute > TanimotoCoefficient similarities and feed it into > ItemBasedRecommender? How? > > Thanks, > Nishant >
