Personally, I think of it as not a 'not' operator, but more a 'but not'
or 'and not' operator. Thats not totally the case I believe, but gives
you semantics that work. Truly I think that each part of the query
creates a score and the NOT query scores 0. That gives a different
result than a boolean system. More than a few times it has been
mentioned that Lucene is a scoring system and not a boolean system.
- Mark
christophe leroy wrote:
Hello,
I don't understand how to use "not" with Lucene. I
think that it is not a boolean not. I read the
documentation but it is not clear enough on how the
"not" works.
For example, I tried to do this request:
type:product
--> I got 100 responses. It is normal. Then, I tried
this request:
type:product AND name:test
--> I got 1 response. It is normal too. And when I
tried this request:
type:product AND (name:test OR NOT name:test)
--> I got 1 response only. I should normally get 100
responses if the "not" was a boolean not.
Could you explain me how the "not" works?
Thank in advance,
Christophe
___________________________________________________________________________
Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions !
Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses
http://fr.answers.yahoo.com
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]