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From Sean Owen <>
Subject Re: Item-based collaborative filtering vs content based filtering
Date Mon, 03 Sep 2012 15:25:15 GMT
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.


On Mon, Sep 3, 2012 at 4:20 PM, Zia mel <> 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?
> 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 ?

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