A couple other seminal favorites: Authoritative Sources in a Hyperlinked Environment http://www.cs.cornell.edu/home/kleinber/auth.pdf http://www.cs.cornell.ed

A couple other seminal favorites: Authoritative Sources in a Hyperlinked Environment http://www.cs.cornell.edu/home/kleinber/auth.pdf http://www.cs.cornell.edu/home/kleinber/auth.pdf Probabilistic Latent Semantic Analysis http://www.cs.brown.edu/~th/papers/Hofmann-UAI99.pdf http://www.cs.brown.edu/~th/papers/Hofmann-UAI99.pdf Kleinberg, author of the first paper, is quite possibly my favorite computer scientist. He's been on the leading edge of a lot of largely disjoint areas of research on the information structure of the web and almost always drops in some really smart stuff. He seems to hit new fields and drop in some big ideas and move on, so a lot of the more concretely applicable stuff comes in refinements of his work, but sometimes I feel like every time I cross into a new problem domain he's already written three papers on it. Beyond that, he writes in a very readable style, which is frustratingly rare for top-notch computer scientists.