Greets,
What would the consequences be of eliminating Similarity.queryNorm()?
I cargo-culted that method when porting, but now I'm going through and
trying to refactor for simplicity's sake. If I can zap it, I'd like to.
First, the theoretical angle:
According to the Similarity docs, que
On Feb 12, 2008, at 9:08 AM, Marvin Humphrey wrote:
What would the consequences be of eliminating
Similarity.queryNorm()? I cargo-culted that method when porting,
but now I'm going through and trying to refactor for simplicity's
sake. If I can zap it, I'd like to.
I infer from the deaf
:-)
I don't know a lot about it, but my understanding has always been that
comparing across queries is difficult at best, so that would argue for
removing it, but I haven't done any research into it. I think it has
been in Lucene for a good long time, so it may be that the history of
why
On Feb 12, 2008, at 5:04 PM, Grant Ingersoll wrote:
I don't know a lot about it, but my understanding has always been
that comparing across queries is difficult at best, so that would
argue for removing it, but I haven't done any research into it. I
think it has been in Lucene for a good
Op Wednesday 13 February 2008 04:48:31 schreef Marvin Humphrey:
...
>
>
> Heck, I'd love to eliminate ALL the automatic normalization code... if
> only I could figure out what all the hidden side effects are. :(
>
> My goal is to de-voodoofy the Query-Weight-Scorer compilation phase so
> th
: It's the *same* coefficient for all sub-clauses, so it shouldn't affect
: rankings, BUT... relative rankings *will* be affected is some inner clauses
: have custom boost values.
For things like ConstantScoreQuery and BoostingQuery or any user created
Query classes that try to return specific,
Chris Hostetter wrote:
The tf(), idf(), lengthNorm() and queryNorm() are directly from the
cosine measure, although lengthNorm()'s default implemenation uses an
approximation.
As I actually found normalized query scores quite useful I decided to
exit my usual lurk-mode :)
I integrated luce
I think I finally cracked this one:
https://issues.apache.org/jira/browse/LUCENE-1896
The usefulness is as it says - to allow the scores from queries to be
*more* comparable. The value of *more* is less clear. Not sure its so
valuable myself.
- mark
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