GenericItemBasedRecommender.mostSimilarItems() does not care. It just uses your ItemSimilarity to do its work. You'd have to be more specific to get more feedback. Are you sure your ItemSimilarity is working, not returning NaN?
On Sun, Sep 26, 2010 at 2:40 PM, Sam Yang <[email protected]> wrote: > I have custom implementation of ItemSimilarity.Does > GenericItemBasedRecommender.mostSimilarItems() > need preference data? > I new GenericItemBasedRecommender with the preference data model and > implementation > of ItemSimilarity,but seems mostSimilarItems() return no results.
