On 17 Nov 2005, at 09:23, [EMAIL PROTECTED] wrote:
I have a similar problem, I have boosted documents in an index,
when I run
a query it shows boosted documents first, but when I loop the
Documents
through the Hits class, this is:
Document doc = hits.doc(i);
System.out.println("Query scoring: "
+ formatter.format(hits.score(i))); //never higher than 1.0. Is
this OK?
Scores are never higher than 1.0 from Hits. If the top scoring
document exceeds 1.0 in raw score, it gets normalized to 1.0 and all
scores following get adjusted using that ratio.
System.out.println("Document boost : "
+ formatter.format(doc.getBoost())); //always shows 1.0 though
//it ranges from 2.0 to 1.0
doc.getBoost() always shows 1.0 ¿Is it how it is supossed to be?
I don't believe, though haven't checked, that doc.getBoost() is a
valid thing to call on documents retrieved from an index. The boost
factor gets collapsed into other factors computed at index time, so
it is incorrect to expect the exact boost factor set at indexing time
is available during searching. Look at the Explanation (from
IndexSearcher.explain) to see the factors used in scoring.
Erik
Regards,
Daniel
-----Erik Hatcher <[EMAIL PROTECTED]> escribió: -----
Para: java-user@lucene.apache.org
De: Erik Hatcher <[EMAIL PROTECTED]>
Fecha: 17/11/2005 14:46
Asunto: Re: Field Boosting
Daniel,
Could you give us a test case that shows the boost not working
properly?
I'm using document level boosting (which is really what field level
boosting does under the covers) in some of my applications and it is
working as expected.
Erik
On 17 Nov 2005, at 05:39, [EMAIL PROTECTED] wrote:
When I boost fields while indexing, the fields still have a boost
of 1.0
during searching. When I view the values via Luke, it confirms the
value
of 1.0. Do I have to boost it agin during search? I want certain
fields
to have higher priority/score during search. How do I get it to
work? I'm
using version 1.4.3. Any help will be appreciated.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Daniel Clark, Senior Consultant
Sybase Federal Professional Services
6550 Rock Spring Drive, Suite 800
Bethesda, MD 20817
Office - (301) 896-1103
Office Fax - (301) 896-1604
Mobile - (703) 403-0340
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