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From Zia mel <ziad.kame...@gmail.com>
Subject Re: Item-based collaborative filtering vs content based filtering
Date Tue, 04 Sep 2012 15:21:29 GMT
If I have a books example , user - book - rating.
And I increase the ratings of books based on their selling , would
that be model-based , since it changed the users ratings ?

Thanks

On Mon, Sep 3, 2012 at 10:25 AM, Sean Owen <srowen@gmail.com> wrote:
> 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 <ziad.kamel25@gmail.com> 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 ?

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