It seems an OK way of doing it to me.
I don't know how expensive those range queries are, but if it turns
out they do eat a lot of performance and/or you want more control
over exactly how scoring is done, AFAIK you'll have to get into the
guts of Lucene and define a custom scorer as documented here:
http://lucene.zones.apache.org:8080/hudson/job/Lucene-Nightly/
javadoc/org/apache/lucene/search/package-summary.html#scoring .
However this is expert territory so I wouldn't go there lightly.
Jasper
On Dec 18, 2007, at 12:01 AM, chris sleeman wrote:
Hi,
I am interested in writing a plugin, where the recency of the
document,
would also be a determinant as far as relevance/scoring is
concerned. I
don't want to sort by date, but would rather like to boost the
score for
pages which are most recently indexed.
Have tried adding range queries using a custom query filter, which
creates
queries of the form -
<query> AND +(date:[20071215 TO 20071218]^3.0 date:[20071201 TO
20071214]^
2.0 date:[20071103 TO 20071201]^1.5 date:[00000000 TO 20071102])^1.0
But I am not sure whether this is a good way or whether including
date range
clauses would have an adverse impact on performance.
Am I missing something? Is there a better way of doing this? Any
help would
be much appreciated.
Regards,
Chris
