Dne 12.4.2011 09:33, Claudio Freire napsal(a): > I actually implemented a statistical system for measuring these kinds > of correlations. > > It's complex, but it might be adaptable to pgsql. Furthermore, one of > the latest projects of mine was to replace the purely statistical > approach with SVCs. You mean Support Vector Classifiers? Interesting idea, although I don't see how to apply that to query planning, especially with non-numeric inputs. Could you share more details on that statistical system and how do you think it could be applied in the pgsql world? > Too bad I won't be able to devote any time to that project before september. I've been working on cross column stats for some time, and although I had to put it aside for some time I'm going to devote more time to this issue soon. So interesting ideas/comments are very welcome. regards Tomas -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
