Re: ts_rank

Robert Haas  wrote:
> Mark  wrote:
 
>> Could somebody explain me on which methods is based ts_rank and
>> how it works?  I would appreciate some articles, if exist.
 
> As far as I can tell, our documentation contains no useful
> information on this topic whatsoever. :-(
 
There's some potentially useful information here:
 
http://www.postgresql.org/docs/9.0/interactive/textsearch-controls.html#TEXTSEARCH-RANKING
 
Although I don't know if it addresses Mark's question very well.
Personally, I wonder how relevant ts_rank will be after knn-giswt
is out....
 
-Kevin