DO NOT REPLY [Bug 4254] - QueryParser does not recognized negative numbers...

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4254

QueryParser does not recognized negative numbers...





------- Additional Comments From cutting@apache.org  2001-10-24 11:45 -------
The way boosts are currently implemented, I actually don't think that this will 
work.  The boosts are squared in TermQuery.sumOfSquaredWeights(), which loses 
their negativeness, no?

And as you've reported separately, zeroed weights don't do what you want either.

Can you try changing that method so that boosts are not multiplied in until 
after the query is normalized?  Tell me if that makes things work any better 
for you.
   
   final float sumOfSquaredWeights(Searcher searcher) throws IOException {
-    idf = Similarity.idf(term, searcher);
-    weight = idf * boost;
+    weight = idf = Similarity.idf(term, searcher);
     return weight * weight;			  // square term weights
   }
 
   final void normalize(float norm) {
     weight *= norm;				  // normalize for query
     weight *= idf;				  // factor from document
+    weight *= boost;                              // boost query
   }