On Sunday 09 January 2005 23:02, Erik Hatcher wrote:
> Yes, coord() can return zero. The score (for that clause) would then
> be zero (though not null).
>
> Erik
>
> On Jan 9, 2005, at 4:15 PM, ABDOU Samir wrote:
>
> > Hello,
> >
> > Is it possible to the coordination factor computed in the class
> > BooleanScorer to have a zero value?
> >
> > Look at the method computeCoordFactors():
> >
> > private final void computeCoordFactors() {
> > coordFactors = new float[maxCoord];
> > for (int i = 0; i < maxCoord; i++)
> > coordFactors[i] = getSimilarity().coord(i, maxCoord-1);
> > }
> > When i=0 the computed coordination factor will have a zero value. The
> > score then can be null !!!
However, 0 not normally used, as coordFactors is
indexed by the number of matching clauses, which is at least 1.
See BooleanScorer.Bucket.coord in the source code.
Regards,
Paul Elschot.
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