This is actually more for java-dev, but anyway.
On Tuesday 22 May 2007 11:04, Mark Miller wrote:
> Sorry, didn't mean to imply that that whole spiel was a technical
> explanation...just a "how I like to think of it" to get my head around
> the BooleanQuery system. If your reading that, think hig
Sorry, didn't mean to imply that that whole spiel was a technical
explanation...just a "how I like to think of it" to get my head around
the BooleanQuery system. If your reading that, think high level overview
more than technically accurate. I'll be more specific in the future --
as always, the
: BooleanQuery.Occur.SHOULD for C, D and E. However the javadocs for
: BooleanClause.Occur.SHOULD states:
:
: "Use this operator for clauses that /should/ appear in the matching
: documents. For a BooleanQuery with two |SHOULD| subqueries, at least one
: of the clauses must appear in the matching
: Each doc is going to get a score -- if the score is positive the doc
: will be a hit, if the score is 0 the doc will not be a hit.
that's actually a fairly missleading statement ... the guts of Lucene
doesn't prevent documents from "matching" with a negative score
(specificly: a HitCollector ca
Peter Bloem wrote:
[...]
"+(A B) C D E"
[...]
In other words, Lucene considers all documents that
have both A and B, and ranks them higher if they also have C D or E.
Hello Peter,
for my understanding "+(A B) C D E" means at least one of the terms "A"
or "B" must be contained and the terms
I like to think of it like this:
Each doc is going to get a score -- if the score is positive the doc
will be a hit, if the score is 0 the doc will not be a hit.
If a boolean clause is Occur.Must and it is not found, the score will be
dropped to 0 no matter what (if found, the score is obviou
I'm constructing a search with some required terms and some optional
terms in in the query. According to some earlier posts that looks like
"+(A B) C D E" in query syntax for required terms A and B and optional
terms C D and E. In other words, Lucene considers all documents that
have both A and
