Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Friend-Based Ranking   We 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.

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The categories of this paper are: mtrl-th
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The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
2
The categories of this paper are: math
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin