There are a lot of terms for these. Yes they are called memory-based or neighborhood-based. Model-based is something a bit different, a breed of recommender that works more like a classifier. Content-based refers to the input, whether it is item attributes or just pure ratings. It's all just terminology, and not 100% consistent.
Sean On Mon, Sep 3, 2012 at 4:20 PM, Zia mel <[email protected]> wrote: > Mahout supports both user-based and item-based collaborative > filtering. Just to make sure, these two types are considered memory > based and not model-based? > http://en.wikipedia.org/wiki/Collaborative_filtering > > Also if we want to recommend items based on their content , that would > be called content-based not item-based ? > > Why don't we consider the item-based and content-based as model-based, > since both use how items are related ?
