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This is a solution to the editors puzzle from Issue 7.2 of SIGecom Exchanges. The puzzle is about predicting what products one can expect to see in a market with given positive and negative synergies between products. The full puzzle can be found online at the SIGecom website Conitzer 2008.
Consider a weather forecaster predicting the probability of rain for the next day. We consider tests that given a finite sequence of forecast predictions and outcomes will either pass or fail the forecaster. It is known that any test which passes a forecaster who knows the distribution of nature...
Mechanism design studies the implementation of allocation functions (sometimes called social choice functions) when relevant information resides with self-interested agents who may misreport their information if it is rational to do so. A central question in the field is to characterize which...
We investigate market forces that would lead to the emergence of new classes of players in the sponsored search advertising market. We report a multi-fold diversification triggered by an inherent feature of the sponsored search market, namely, capacity constraints, arising from the fact that...
In this letter, we outline a new approach to modeling, analyzing, and combating manipulative attacks on recommender systems.
We investigate the problem of incentivizing an expert to truthfully reveal probabilistic information about a random event. Probabilistic information consists of one or more properties, which are any real-valued functions of the distribution, such as the mean and variance. Not all properties can...
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