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From lee carroll <lee.a.carr...@googlemail.com>
Subject Re: Average Absolute Difference Recommender Evaluator metric
Date Tue, 25 Oct 2011 19:55:39 GMT
I've not come across the terms boolean / non boolean recommenders
before. I thought they all worked by
estimating preferences.



On 25 October 2011 19:13, Sean Owen <srowen@gmail.com> wrote:
> You should be able to compare across all of the "non-boolean"
> recommenders as they all operate by estimating preferences.
>
> But it's not meaningful for any comparison, for the rest.
>
> On Tue, Oct 25, 2011 at 7:04 PM, lee carroll
> <lee.a.carroll@googlemail.com> wrote:
>> So when comparing within a technique AAD or RMS is fine but when comparing
>> across recommenders using a variety of similarities its best to stick
>> to IR measures.
>

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