Yury Lifshits (then a research scientist at Yahoo! Research) did a talk at Estonian Summer School on Computer Science called "Intro to Content Optimization" [1]

Yury Lifshits (then a research scientist at Yahoo! Research) did a talk at Estonian Summer School on Computer Science called "Intro to Content Optimization" [1], where he explained one of the approaches. It makes an interesting read. [1] -- http://yury.name/esscass/ http://yury.name/esscass/