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From Dawid Weiss <>
Subject Re: Lucene search clusters
Date Wed, 08 Jun 2005 15:33:44 GMT

> right, shit in - shit out :-).

True. But in most cases clustering of search results can yield sensible 
clusters. Try, for example:

We in fact use Lucene for this demo (indexing ODP categories) --

An open source clustering component isn't much worse (with Google 
serving as the data source):

Compare it with (same algorithm) AllTheWeb:

As you said -- much depends on the data, but there is also a lot of 
space for the clustering algorithm (try identical inputs and different 
algorithms and you'll see the difference).


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