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From Ted Dunning <>
Subject Re: [Taste] Sanity Check and Questions
Date Fri, 19 Jun 2009 16:57:17 GMT
See my comments about cooccurrence.  The memory and query-time computation
costs are the result of doing the recommendation in two steps instead of
doing teh coocurrence analysis offline.

On Fri, Jun 19, 2009 at 5:40 AM, Grant Ingersoll <>wrote:

> 2.  Nah I don't think you want to go to all the trouble of
>> transposing, that's quite heavy. I think you want one of two things
>> based on your description:
> I don't know, "Programming Collective Intelligence" (page 17) seems to
> suggest transposing as being pretty useful for product-product suggestions.
>  I suppose, however, that it really is just getting the neighborhood then
> and not going the extra step of getting items (er users in this case).
> The main cost is in having a second model in memory, I suppose.

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