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From Grant Ingersoll <gsing...@apache.org>
Subject Re: diversity in results
Date Tue, 05 Aug 2008 00:34:59 GMT

On Aug 4, 2008, at 6:17 PM, Jason Rennie wrote:

> Does the MLT handler simply select a few high tfidf terms from the  
> doc and
> use them as a query?  Sounds like a useful tool.  Do you know  
> anything about
> relevant performance issues?  I noticed that the Solr MoreLikeThis  
> wiki page
> recommends turning on TermVectors for corresponding fields.  Can  
> lucene not
> easily return term counts for a document with the standard indexing  
> b/c it's
> term-based (i.e. "inverted").

Correct.

> Does TermVectors=true cause solr/lucene to
> store an additional doc-based index?

Yes, that is correct

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