Your best bet is to probably load the item id's from the recommendations from each user / recommendation list into a FastIDSet. The FastIDSet has an intersection size method.
On Thu, Jun 2, 2011 at 7:07 PM, Chris Schilling <[email protected]>wrote: > Hello, > > I am trying to do a little bit deeper inspection of some of the > recommendations I am seeing. I was curious if the API exists to return the > intersection of 2 PreferenceArray objects. > > Thanks > Chris > >
