Re: tsearch2: word position

On 2/22/07, Markus Schiltknecht <markus@bluegap.ch> wrote:
> Hello Teodor,
>
> Teodor Sigaev wrote:
> > byte offset of word is useless for ranking purpose
>
> Why is a word number more meaningful for ranking? Are the first 100
> words more important than the rest? That seems as ambiguous as saying
> the first 1000 bytes are more important, no?

No, the first X aren't more important, but being able to determine
word proximity is very important for partial phrase matching and
ranking.  The closer the words, the "better" the match, all else being
equal.

--
Mike Rylander
mrylander@gmail.com
GPLS -- PINES Development
Database Developer
http://open-ils.org