01083nam a22001577a 4500999001900000008004100019100004800060245002500108260004700133300003200180520054000212773004700752906001200799942000700811952010700818  c521205d521205221226b           ||||| |||| 00| 0 eng d  aBloch, Francis and Olckers, Matthew 936414  aFriend-based ranking  aAmerican Economic Journal: Microeconomics   a14(2), May, 2022: p.176-214  aWe analyze the design of a mechanism to extract a ranking of individuals according to a unidimensional characteristic, such as ability or need. Individuals, connected on a social network, only have local information about the ranking. We show that a planner can construct an ex post incentive compatible and efficient mechanism if and only if every pair of friends has a friend in common. We characterize the windmill network as the sparsest social network for which the planner can always construct a complete ranking. – Reproduced   aAmerican Economic Journal: Microeconomics   aRANKING  cAR  00102ddc40709395257aIIPAbIIPAd2022-12-26h14(2), May, 2022: p.176-214pAR127753r2022-12-26yAR