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From Sean Owen <>
Subject Re: Custom Item Similarity :datamodel not sure
Date Thu, 27 Sep 2012 18:54:24 GMT
But what was your input? Item item similarity? Then you already had item
item similarity. And what you compute from that method is probably not

You don't have a recommender problem so there is no question of what to
feed to a recommender.  Don't use it at all. You already have all you need
in your ItemSimilarity.
On Sep 27, 2012 7:50 PM, "Abhishek Roy" <> wrote:

> Thanks Sean. I get your point. Will try incorporating that.
> Earlier, as I mentioned, for a small item count(<5000), the
> input(datamodel) to
> the recommender was nC2 item-item pairs(tried to feed uniform preference
> for
> each item to every other item), without the rating field, and then called
> recommender.mostSimilarItems() to get the list. nC2 works, but is not
> scalable.
> It worked well as the recommendations were the similar items(that works
> for me
> now).
>  Although am digging through the code to see what least input I can give,
> any
> meaningful suggestion for data input would be awesome.

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