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From Sean Owen <>
Subject Re: Recommender impl using interpolated knn and SVD
Date Fri, 10 Apr 2009 15:03:06 GMT
Wow, very nice. I'm the guy to talk to. I had taken a crack at
SVD-related implementations a few years ago and found it too
complicated for my brain, and too slow. It is good to hear you have
had success. It has been some time since I myself added any new

Perhaps the more experienced Apache folk can comment on this -- is
this significant enough of a contribution that it needs a software
grant agreement of some kind? Or is it OK to open a JIRA issue, attach
a patch, and confirm there that it is granted to the ASF?

Beyond that, the next step is to open an issue at and attach a patch which
includes the changes. I can commit it, then I will probably have some
tweaks and other changes I would like to make, which we can
collaborate on.


On Fri, Apr 10, 2009 at 3:38 PM, Andre Panisson <> wrote:
> Hi,
> I have an item based recommender implementation that uses Knn with
> interpolated weights, based on the paper of Robert M. Bell and Yehuda Koren
> in ICDM '07, and another implementation that uses Single Value Decomposition
> to capture the features of a DataSet. I had very good results from these two
> implementations, and I would like to share it with this project in order to
> improve it and to know results from other people. What I need to do?
> Thanks,
> André

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