Bruce Momjian wrote: > Mark wrote: > > >There's some potentially useful information here: > > >http://www.postgresql.org/docs/9.0/interactive/textsearch-controls.html#TEXTSEARCH-RANKING > > > > Thanks for reply. I was reading the documentation of PostgreSQL, but there > > it is not written the name of the used methods. Everywhere there is written, > > that ts_rank use standard ranking function. But it is difficult to say which > > is the standard function. > > Somewhere I found that it is maybe based on Vector space model and it seems > > to be truth, because in the code of tsrank.c is counted the frequency of > > words, but I am not sure of that :-( > > Oleg, Teodor, can you give me a description of how ts_rank decided how > to rank items? Thanks.
Any news on this question? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
