search.Similarity

2006-04-11 Thread miki sun
Hi there Is there any theory behind the similarity measure of Lucene? http://lucene.apache.org/java/docs/api/org/apache/lucene/search/Similarity.html Thanks Miki - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional co

Re: search.Similarity

2006-04-11 Thread Erik Hatcher
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 --

Re: search.Similarity

2006-04-11 Thread Erik Hatcher
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: <