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From: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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Subject: Re: adaptive word scoring
Date: 30 Nov 1996 14:18:26 +0100
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Felix Lee <flee@teleport.com> writes:

> Kai Grossjohann:
> > IR people deal with this problem by using tf*idf (i == inverse);
> > actually it's log(n/N) where n is the term frequency and N the
> > document frequency.
> 
> hmm.  something like that might help.  lemme think about it.

Yes, it sounds interesting.  Mail me a patch and I'll apply it.  :-)
(Gee, aren't I nice.)

> and there's still the problem that adaptive scoring in
> general tends to let scores grow without bound in a
> meaningless way.

You could start to decay the scores.  (Now that I think about it -- I
can't recall ever getting any bug reports on score decays, which means
that nobody's using it.  :-)  Set `gnus-decay-scores' to t and see
what happens.)

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@ifi.uio.no * Lars Ingebrigtsen