if we want to make a prediction for user1,item1 than it's the neighbourhood of item1.
As you mentioned earlier I'm turning the classic recommender problem on its side. maybe i don't understand the problem exactly, but most of the papers I read think along this line. srowen wrote: > > No that's not my understanding of how the canonical item-based > algorithm operates. I am still not sure what neighborhood you are > thinking of -- neighborhood of what item? > > On Fri, Feb 19, 2010 at 11:59 PM, jamborta <[email protected]> wrote: >> >> but generally speaking item-based recommendation is just >> looking at the same problem from a different point of view. the centre of >> the neighbourhood >> is the target item. >> >> besides, restricting the neighbourhood size seems to improve performance. > > -- View this message in context: http://old.nabble.com/item-based-recommendation-neighbourhood-size-tp27661482p27662327.html Sent from the Mahout User List mailing list archive at Nabble.com.
