Have a look at the FieldSelector stuff, assuming you are using trunk
or some recent nightly build. It _may_ help w/ what you are doing.
Also, I would think you could calculate the median at indexing time
(or just after), but I'm not sure I fully understand what you are
trying to do, so take that w/ a grain of salt.
You may find https://issues.apache.org/jira/browse/LUCENE-762
useful. It hasn't been committed, but will be before 2.1 (so you
will have to apply the patch too) Also, don't worry about the
discussion of the internals, the patch as submitted by Chuck is good
You will have to calculate your deviations separately, but the field
size info should help.
-Grant
On Feb 6, 2007, at 12:13 PM, poeta simbolista wrote:
Hi,
I would like to query results, regarding results.
For example, get those results whose field "size" is 2 standard
deviations
from the median.
It looks like sth I should do myself, processing results first,
getting the
median, and then calculate that threshold and perform a new query.
Is it
however, sth there that may help with that?
Thank you
--
View this message in context: http://www.nabble.com/deviations-
tf3181792.html#a8829971
Sent from the Lucene - Java Users mailing list archive at Nabble.com.
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Grant Ingersoll
Center for Natural Language Processing
http://www.cnlp.org
Read the Lucene Java FAQ at http://wiki.apache.org/jakarta-lucene/
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