Is it possible to use a custom similarity class to cause extra terms in a field to lower score?

: Terminator 2
: Terminator 2: Judgment Day
:
: And I score them against the query +title:(Terminator 2)

: Would there be some method or combination of methods in Similarity
: that I could easily override to allow me to penalize the second item
: because it had "unused terms"?

that's what the DefaultSimilarity does, it uses the (length)norm
information stored when the documents are indexed to know which one is a
better match (because it matches on a shorter field)

I you aren'tseeing that behavior then perhaps you turned omitNorms for
that field, or perhaps the byte encoding is making the distinction between
your various terms too small -- overriding the lengthNorm function and
reindexing might help.



-Hoss


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Oops. I do indeed have omitNorms turned on. I will re-read the
documentation on it and look at turning it off.

Sorry for the bother. :/
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