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From Erik Hatcher <e...@ehatchersolutions.com>
Subject Re: search.Similarity
Date Tue, 11 Apr 2006 18:11:50 GMT
In case anyone misses the smiley, I'm just teasing.  Yes, there are  
years of research and heavy duty experience that are behind Lucene.   
There are quite a number of research documents and books that  
describe information retrieval theory and practice, several of them  
linked here:

	<http://wiki.apache.org/jakarta-lucene/InformationRetrieval>


On Apr 11, 2006, at 2:06 PM, Erik Hatcher wrote:

> On Apr 11, 2006, at 1:46 PM, miki sun wrote:
>> Is there any theory behind the similarity measure of Lucene?
>>
>> http://lucene.apache.org/java/docs/api/org/apache/lucene/search/ 
>> Similarity.html
>
> No, Doug just made it up with some random mathematical formulas,  
> just for fun :)
>
> 	Erik
>
>
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