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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