Hello,
Thnks for the tip.
The idea of extended boolean model is that a weight between 0 and 1 would be
calculated for all search results that contains at least one of the terms.
The extended model evaluates documents with only one of the terms with a
smaller value than one that contains both. A NOT B would have value 0.
regards,
----- Original Message -----
From: "Steven A Rowe" <[email protected]>
To: <[email protected]>
Sent: Monday, December 29, 2008 8:35 PM
Subject: RE: Lucene retrieval model
Hi csantos,
Very few people are subscribed to the [email protected] mailing
list - you'll get much better response if you use the [email protected] list
instead.
On 12/29/2008 at 9:07 AM, csantos wrote:
I would like to know more about Lucene's retrieval model,
more specifically about the boolean model part, is that a
standard model (just documents that match the boolean
expression) or an extended model (include in the search
result all Documents which correspond to the given
conditions, regardless of the boolean connectors - AND,
OR, NOT) ?
I'm not familiar with your use of the terms "standard model" and "extended
model", so take my response here with a grain of salt.
There is no way I know of to include documents in the search results that
violate the constraints represented by the connectors you use. But if
you're interested in getting all documents that match a query, can't you
simply use all OR connectors?
Out of curiosity, how useful would it be for the query "A NOT B" to return
documents that match "B"?
Steve
