Subject: Re: [htdig3-dev] Too many stars
From: Gilles Detillieux (grdetil@scrc.umanitoba.ca)
Date: Wed May 03 2000 - 09:50:10 PDT
According to Terry Luedtke:
> I've been fiddling with the different _factor settings and ran into
> a problem. Internet Explorer bogged down on a result set and hung.
> When I went back and ran the same query with htsearch -v, there were
> dozens of star image tags on each result. It seems to be worse with
> backlink_factor set to zero. I added a few print lines to Display.cc
> and got the following in generateStars:
>
> if(debug) cerr << "generateStars: doc, min, max " << ref->DocScore() << minScore << maxScore <<endl;
> if(debug) cerr << "generateStars: nStars " << nStars << " of " << maxStars <<endl;
>
> generateStars: doc, min, max -1 0.000219684 0.134886
> generateStars: nStars -20 of 4
> generateStars: doc, min, max -1 0.000219684 0.134886
> generateStars: nStars -20 of 4
>
>
> As you can see, ref-DocScore() is returning a negative score so in this
> case there are 25 stars. I also printed the buildMatchList() section
> that sets min and max scores. No negative scores were displayed.
I'm assuming this is 3.2.0b2 you're testing?
generateStars() should probably have a test like this, to prevent
excess star_blank images:
if (score < 0)
score = 0;
However, the root of the problem seems to be in buildMatchList(). It
sets the score for the current match to 1.0 + log(score), but calculates
minScore and maxScore based solely on the value of score. It should
take the log of these, either before or after the min/max calculation,
shouldn't it?
-- Gilles R. Detillieux E-mail: <grdetil@scrc.umanitoba.ca> Spinal Cord Research Centre WWW: http://www.scrc.umanitoba.ca/~grdetil Dept. Physiology, U. of Manitoba Phone: (204)789-3766 Winnipeg, MB R3E 3J7 (Canada) Fax: (204)789-3930------------------------------------ To unsubscribe from the htdig3-dev mailing list, send a message to htdig3-dev-unsubscribe@htdig.org You will receive a message to confirm this.
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