The Limits of Multi-task Peer Prediction
The Limits of Multi-task Peer Prediction
复制标题
多任务同行预测的局限性
DOI:
10.1145/3465456.3467642
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Chen, Yiling
中科院分区:
文献类型:
--
作者:
Zheng, Shuran;Yu, Fang-Yi;Chen, Yiling
Recent advances in multi-task peer prediction have greatly expanded our knowledge about the power of multi-task peer prediction mechanisms. Various mechanisms have been proposed in different settings to elicit different types of information. But we still lack understanding about when desirable mechanisms will exist for a multi-task peer prediction problem. In this work, we study the elicitability of multi-task peer prediction problems. We consider a designer who has certain knowledge about the underlying information structure and wants to elicit certain information from a group of participants. Our goal is to infer the possibility of having a desirable mechanism based on the primitives of the problem. Our contribution is twofold. First, we provide a characterization of the elicitable multi-task peer prediction problems, assuming that the designer only uses scoring mechanisms. Scoring mechanisms are the mechanisms that reward participants' reports for different tasks separately. The characterization uses a geometric approach based on the power diagram characterization in the single-task setting. For general mechanisms, we also give a necessary condition for a multi-task problem to be elicitable. Second, we consider the case when the designer aims to elicit some properties that are linear in the participant's posterior about the state of the world. We first show that in some cases, the designer basically can only elicit the posterior itself. We then look into the case when the designer aims to elicit the participants' posteriors. We give a necessary condition for the posterior to be elicitable. This condition implies that the mechanisms proposed by Kong and Schoenebeck are already the best we can hope for in their setting, in the sense that their mechanisms can solve any problem instance that can possibly be elicitable.
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DOI:
10.1145/1386790.1386813
发表时间:
2008-07
期刊:
--
影响因子:
--
作者:
Nicolas S. Lambert;David M. Pennock;Y. Shoham
通讯作者:
Nicolas S. Lambert;David M. Pennock;Y. Shoham
DOI:
--
发表时间:
2019
期刊:
ACM-SIAM Symposium on Discrete Algorithms
影响因子:
--
作者:
Yuqing Kong
通讯作者:
Yuqing Kong
DOI:
--
发表时间:
2018
期刊:
ACM Conference on Economics and Computation
影响因子:
--
作者:
Yuqing Kong;G. Schoenebeck
通讯作者:
G. Schoenebeck
DOI:
--
发表时间:
2017
期刊:
Game Theory for Data Science
影响因子:
--
作者:
B. Faltings;Goran Radanovic
通讯作者:
Goran Radanovic
DOI:
--
发表时间:
2022
期刊:
Workshop on Internet and Network Economics
影响因子:
--
作者:
G. Schoenebeck;Fang
通讯作者:
Fang