I think it would definitely be a useful addition. The org.apache.mahout.cf.taste.impl.recommender.BiasedItemBasedRecommender already has this functionality e.g.
/s On 27.11.2012 03:59, Evgeny Karataev wrote: > Hello, > > Are there any particular reasons, why the implementation of item-based > recommendations does not support item neighborhood formation, e.g. based on > similarity threshold or by providing a number for the most similar items to > be used? > > I know that there is linear interpolation item-based recommendation, but it > seems a little bit different than just classical item-based recommendation. > And anyway it does not support threshold based neighborhood. > > Thank you. >
