bibliographic ranking algorithm

From: rob caSSon <rob_at_nyob> Date: Mon, 11 Apr 2005 14:38:00 -0400 To: CODE4LIB_at_listserv.nd.edu

does anyone know of a published ranking algorithm for bibilographic
items.....taking into account where in a record a search term appears
(title, keyword, etc), maybe weighting a particular source database,
etc?

did some googling but didn't really know what to look for, so thought
maybe someone here had some hints.....

thanks as always,
rob