Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
affine transformations
In geometry, an affine transformation or affine map or an affinity (from the Latin, affinis, "connecte with") between two vector spaces (strictly speaking, two affine spaces) consists of a linear transformation followed by a translation: