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Networked Life by Mung Chiang

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4 How does Netflix recommend movies?

We just saw three beautiful equations in the last three chapters, each used at least a billion times every single day:

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We continue with our first block of four chapters that present four fundamental algorithms: distributed power control, second price auction, PageRank, and now, collaborative filtering. These four chapters also introduce the basic languages of optimization, game, graph, and learning theories. A word of caution: as a chapter that introduces the basic ideas both in convex optimization and in machine learning, this chapter is among the longest in the book; you have to wait about 14 pages ...

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