We establish that the fraction of preference profiles for which the random serial dictatorship allocation is ordinally … efficient vanishes for allocation problems with many object types. We consider also a probabilistic setting where in expectation … probability that the random serial dictatorship mechanism is ordinally efficient converges to zero as the number of object types …

We establish that the fraction of preference profiles for which the random serial dictatorship allocation is ordinally … efficient vanishes for allocation problems with many object types. We consider also a probabilistic setting where in expectation … probability that the random serial dictatorship mechanism is ordinally efficient converges to zero as the number of object types …

transfers are not allowed, and studies the tradeoff between fairness and efficiency in the class of strategy-proof mechanisms …. The main finding is that for strategy-proof mechanisms the following efficiency and fairness criteria are mutually … incompatible: (1) Ex-post efficiency and envy-freeness, (2) ordinal efficiency and weak envy-freeness and (3) ordinal efficiency …

Dictatorship, is characterized by symmetry, ex-post efficiency, and probabilistic (Maskin) monotonicity - whenever preferences …

allocations. In particular, we find that losses always can be distributed equidistant to every agent's ideal allocation …. Interestingly, this fair allocation coincides with the intermediate fixed-fraction rule when individual losses are identical. …

efficiency are explored. On a technical level, the paper extends the notion of a diversity measure (Nehring and Puppe 2002) to …

We study the allocation of heterogeneous services to agents without monetary transfers under incomplete information … allocation of seats to public schools, spaces in college dorms or courses, or spots in subsidized housing. For tractability, we … finite market mechanism, which significantly outperforms the baseline plan chosen by the city in terms of efficiency, equity …