As far as I remember, Mahout overrides older preference values with the newest one.
On Tue, Aug 7, 2012 at 2:14 PM, Dominik Lahmann < [email protected]> wrote: > Hi, > > I would like to know how I can deal with multiple preference values > for the same (user, item)-pair from a machine learning perspective? > That means, I have got more than one rating from a user u for an item i > available. > Of course using any kind of average (maybe also taking date information > into account, e.g. by using a weighted/exponential moving average) > would be possible. > > I am interested in if any more sophisticated methods are used. > > Probably it would already be very helpful to know which term to > look/search for or have some papers on that topic. > > As far a I noticed Mahout would always just take the newest preference > value. Is that correct? > > Thanks a lot, > Dominik >
