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From Karl Wettin <>
Subject Re: Hot to get word importance in lucene index
Date Fri, 23 Jul 2010 07:56:30 GMT

Please define "important". Important to do what?

It would probably be helpful if you explained what it is you attempt  
to achieve by doing this. Perhaps there is something in MoreLikeThis  
that will help you?


23 jul 2010 kl. 04.44 skrev Xaida:

> Hi all!
> hmmm, i need to get how important is the word in entire document  
> collection
> that is indexed in the lucene index. I need to extract some  
> "representable
> words", lets say concepts that are common and can be representable  
> to whole
> collection. Or collection "keywords". I did the fulltext indexing  
> and the
> only field i am using are text contents, because titles of the  
> documents are
> mostly not representable(numbers, codes etc....)
> So, if i calculate tfidf, it gives me importance of single term with  
> respect
> to single document. But if that word is repeating in the documents,  
> how can
> i calculate its total importance within index?
> All help appreciated!! Thank you!!!
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