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. -- 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
