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From Shashikant Kore <>
Subject Re: Document Clustering
Date Thu, 28 May 2009 14:32:55 GMT
Hi Grant,

I have the code to create lucene index from document text and then
generate document vectors from it.  This is stand-alone code and not
MR.  Is it something that interests you?


On Thu, May 28, 2009 at 5:57 PM, Grant Ingersoll <> wrote:
> I'm about to write some code to prepare docs for clustering and I know at
> least a few others on the list here have done the same.  I was wondering if
> anyone is in the position to share their code and contribute to Mahout.
> As I see it, we need to be able to take in text and create the matrix of
> terms, where each cell is the TF/IDF (or some other weight, would be nice to
> be pluggable) and then normalize the vector (and, according to Ted, we
> should support using different norms).   Seems like we also need the label
> stuff in place ( but I'm not
> sure on the state of that patch.
> As for the TF/IDF stuff, we sort of have it via the BayesTfIdfDriver, but it
> needs to be a more generic.  I realize we could use Lucene, but having a
> solution that scales w/ Lucene is going to take work, AIUI, whereas a M/R
> job seems more straightforward.
> I'd like to be able to get this stuff committed relatively soon and have the
> examples for other people.  My shorter term goal is I'm working on some
> demos using Wikipedia.
> Thanks,
> Grant

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