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From Sean Owen <sro...@gmail.com>
Subject Re: difference between precomputed and on-the-fly processed data
Date Thu, 20 Sep 2012 14:40:56 GMT
I suppose no pruning is better in the sense that you don't throw out
data. It's just that it takes more processing and at some scale that's
an issue.

On Thu, Sep 20, 2012 at 3:35 PM, Davide Pozza <davide.pozza@gmail.com> wrote:
> Hello Sebastian
>
> thanks for the reply.
>
> After adding the GenericBooleanPrefItemBasedRecommender instead of
> the GenericItemBasedRecommender I obtain the following results:
>
> FIRST
> RecommendedItem[item:4140, value:2.7275915]
> RecommendedItem[item:3982, value:2.7191503]
> RecommendedItem[item:1377, value:2.7180452]
> RecommendedItem[item:2706, value:2.7041116]
> RecommendedItem[item:4010, value:2.702695]
> -----------------
>
> SECOND
> RecommendedItem[item:4140, value:4.4948235]
> RecommendedItem[item:2108, value:4.3325663]
> RecommendedItem[item:1968, value:4.330123]
> RecommendedItem[item:2835, value:4.3260937]
> RecommendedItem[item:2902, value:4.3107653]
>
> Could the difference be due to the pruning you're talking about?
> If so which of the two implementation do you think could be considered
> better?
>
> Thanks again
>
> Davide

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