Titlebook: Internet and Network Economics; 5th International Wo Stefano Leonardi Conference proceedings 2009 Springer-Verlag Berlin Heidelberg 2009 In

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Externalities in Keyword Auctions: An Empirical and Theoretical Assessmento else is shown in the other sponsored positions. To empirically evaluate this claim, we develop a model of ordered search applied to keyword advertising, in which users browse slots from the top to the bottom of the sponsored list and make their clicking decisions slot by slot. Our contribution is

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Covering Games: Approximation through Non-cooperationudied ... In the general covering problem, we are given a universal set of weighted elements . and . collections of subsets of the elements. The task is to choose one subset from each collection such that the total weight of their union is as large as possible. In our game-theoretic setting, the cho