Yes any metric that concerns estimated value vs real value can't be
used since all values are 1. Yes, when you use the non-boolean version
with boolean data you always get 1. When you use the boolean version
with boolean data you will get nonsense since the output of this
recommender is not an estimated rating at all.
On Tue, Jan 22, 2013 at 4:40 PM, Zia mel <ziad.kame...@gmail.com> wrote:
> I got 0 when I used GenericUserBasedRecommender in code 2 but when
> using GenericBooleanPrefUserBasedRecommender score was not 0 . I
> repeat the test with different data and again I got some results.
> Moreover , when I use
> DataModel model = new FileDataModel(new File("ua.base"));
> in code 2, the MAE score was higher.
>
> When you say RMSE can't be used with boolean data, I assume MAE also
> can't be used?
>
> Thanks !
>
> On Tue, Jan 22, 2013 at 10:08 AM, Sean Owen <sro...@gmail.com> wrote:
>> RMSE can't
>> be used with boolean data.
