lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Karl Wettin <karl.wet...@gmail.com>
Subject Re: Index time Document Boosting and Query Time Sorts
Date Wed, 24 Sep 2008 14:26:14 GMT

24 sep 2008 kl. 12.40 skrev Grant Ingersoll:

> One side note based on your example, below:  Index time boosting  
> does not have much granularity (only 255 values), in other words,  
> there is a loss of precision.  Thus, you
> want to make sure your boosts are different enough such that you can  
> distinguish between the two.   Maybe 1/(2*depth) or something like  
> that. You can alter how these 255 values are encoded, but that is  
> fairly advanced stuff.

Just a note, the granularity is 255 only if you turn off length  
normalization, if not it's something like 25.


        karl

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org


Mime
View raw message