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From Laya Patwa <laya1...@iitr.ernet.in>
Subject Re: problems with taste.
Date Wed, 15 Jul 2009 14:30:13 GMT
OK... but i am getting recommendations for this data file!
And i also tried the other data file after removing some of the items but
the recommendation list is still empty. Can you please have a look at it
that you have the code and the data now.

On Wed, Jul 15, 2009 at 2:52 PM, Sean Owen <srowen@gmail.com> wrote:

> I have them now. Yes, again Thomas's analysis is correct about why
> there are no recommendations from the .txt file. See the previous
> messages about what to do.
>
> The other data file has a different issue. All the ratings are the
> same. Correlation-based similarity metrics will not work as they
> cannot define a similarity in such a case (correlation is undefined).
> It will be unable to give recommendations as a result. You need to try
> a different metric like TanimotoCoefficientSimilarity.
>
> If that works well, there is a way to make this a lot faster. We can
> discuss it next.
>
> On Wed, Jul 15, 2009 at 1:48 PM, Laya Patwa<laya1uec@iitr.ernet.in> wrote:
> > There is a problem in the mailing system I guess. I am sending 1 file in
> 1
> > mail. This has the code file.
> >
> > On Wed, Jul 15, 2009 at 2:15 PM, Sean Owen <srowen@gmail.com> wrote:
> >>
> >> There is still only one text file attached. But anyway I believe Thomas
> >> has
> >> identified the problem.
> >>
> >> On Jul 15, 2009 1:03 PM, "Laya Patwa" <laya1uec@iitr.ernet.in> wrote:
> >>
> >> You did not get the code? But I sent it. Anyways please find 3 files
> >> attached with this mail containing the code and the 2 data files.
> >> My apologies for the mistake.
> >>
> >> On Wed, Jul 15, 2009 at 1:57 PM, Sean Owen <srowen@gmail.com> wrote: >
> >
> >> Thomas is right, you have...
> >
> >
>

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