Webb Sprague wrote: > On Feb 1, 2008 12:19 PM, Ron Mayer <rm_pg@xxxxxxxxxxxxxxxxxxxxxxx> wrote: >> Webb Sprague wrote: >>> On Feb 1, 2008 2:31 AM, Enrico Sirola <enrico.sirola@xxxxxxxxx> wrote: >>>> ...linear algebra ... >>> ... matrices and vectors . >> ...Especially if some GIST or similar index could efficiently search >> for vectors "close" to other vectors... > > Hmm. If I get some more interest on this list (I need just one LAPACK > / BLAS hacker...), I will apply for a pgFoundry project and appoint > myself head of the peanut gallery... I think you should start one. I'd be happy to help. I'm rather proficient in C; somewhat literate about postgres' GIST stuff (I think a couple of my bugfix patches were accepted in postgis); and deal with a big database doing lots of similarity-based searches (a 6'2" guy with light brown hair being similar to a 6'1" guy with dark blond hair) - and am experimenting with modeling some of the data as vectors in postgres. ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org/