OK I committed org.apache.mahout.cf.taste.impl.similarity.GenericUserSimilarity. I think that if you use it with PearsonUserSimilarity and your 'model' DataModel, you will get the desired result. Use 'modelPaper' elsewhere.
On Tue, Apr 14, 2009 at 4:16 PM, Sean Owen <[email protected]> wrote: > 2) If you really want to compute similarities based on other data, I > think you will have to pre-compute all of those user-user > similarities, first, separately, then store them in a new > implementation of UserSimilarity. Do you see GenericItemSimilarity? > This is exactly what you need -- but for a UserSimilarity. Perhaps I > can make this implementation tonight. The disadvantage is that it will > consume a lot of memory to store all user-user similarities, but, it > will be fast.
