Makes sense. It was always my intent to implement things like
PayloadNearQuery, see http://wiki.apache.org/lucene-java/Payload_Planning
I think it would make sense to develop these and I would be happy to
help shepherd a patch through, but am not in a position to generate
said patch at this moment in time.
On Jul 10, 2008, at 9:59 AM, Peter Keegan wrote:
Suppose I create a SpanNearQuery phrase with the terms "long range
missiles"
and some slop factor. Each term is actually a BoostingTermQuery.
Currently,
the score computed by SpanNearQuery.SpanScorer is based on the sloppy
frequency of the terms and their weights (this is fine). But even
though
each term is actually a BoostingTermQuery, the BoostingTermScorer (and
therefore 'processPayload') is never invoked for this type of query.
I was looking for a way to have SpanNearQuery (also SpanOrQuery,
SpanFirstQuery) recognize that the terms in the phrase should boost
the
overall score based on the payloads assigned to them. Thus the score
from
the SpanNearQuery would be higher if :
a) the terms have payloads that boost their scores
b) the terms are positionally next to each other (minimal slop - as
it works
now)
Does this make sense?
Peter
On Thu, Jul 10, 2008 at 9:21 AM, Grant Ingersoll <[EMAIL PROTECTED]>
wrote:
I'm not fully following what you want. Can you explain a bit more?
Thanks,
Grant
On Jul 9, 2008, at 2:55 PM, Peter Keegan wrote:
If a SpanQuery is constructed from one or more
BoostingTermQuery(s), the
payloads on the terms are never processed by the SpanScorer. It
seems to
me
that you would want the SpanScorer to score the document both on
the spans
distance and the payload score. So, either the SpanScorer would
have to
process the payloads (duplicating the code in BoostingSpanScorer),
or
perhaps SpanScorer could access the BoostingSpanScorers, or maybe
there's
another approach.
Any thoughts on how to accomplish this?
Peter
--------------------------
Grant Ingersoll
http://www.lucidimagination.com
Lucene Helpful Hints:
http://wiki.apache.org/lucene-java/BasicsOfPerformance
http://wiki.apache.org/lucene-java/LuceneFAQ
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http://www.lucidimagination.com
Lucene Helpful Hints:
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