Friend-Based Ranking in Practice
Francis Bloch, Matthew Olckers
TL;DR
This paper explores a strategy-proof mechanism for targeting individuals based on friend rankings, addressing practical implementation issues and errors in the rankings.
Contribution
It introduces a novel mechanism that leverages friend-based rankings for targeting, with analysis of its practical robustness and error handling.
Findings
Mechanism is strategy-proof for individuals.
Practical implementation considerations are discussed.
Error resilience in rankings is analyzed.
Abstract
A planner aims to target individuals who exceed a threshold in a characteristic, such as wealth or ability. The individuals can rank their friends according to the characteristic. We study a strategy-proof mechanism for the planner to use the rankings for targeting. We discuss how the mechanism works in practice, when the rankings may contain errors.
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