Is Selling Complete Information (Approximately) Optimal?
Is Selling Complete Information (Approximately) Optimal?
复制标题
出售(大约)完整信息是最佳选择吗?
DOI:
10.1145/3490486.3538304
复制
发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Zhao, Mingfei
中科院分区:
文献类型:
--
作者:
Bergemann, Dirk;Cai, Yang;Velegkas, Grigoris;Zhao, Mingfei
We study the problem of selling information to a data-buyer who faces a decision problem under uncertainty. We consider the classic Bayesian decision-theoretic model pioneered by Blackwell. Initially, the data buyer has only partial information about the payoff-relevant state of the world. A data seller offers additional information about the state of the world. The information is revealed through signaling schemes, also referred to as experiments. In the single-agent setting, any mechanism can be represented as a menu of experiments. A recent paper by Bergemann et al.[8] present a complete characterization of the revenue-optimal mechanism in a binary state and binary action environment. By contrast, no characterization is known for the case with more actions. In this paper, we consider more general environments and study arguably the simplest mechanism, which only sells the fully informative experiment. In the environment with binary state and m≥3 actions, we provide an-approximation to the optimal revenue by selling only the fully informative experiment and show that the approximation ratio is tight up to an absolute constant factor. An important corollary of our lower bound is that the size of the optimal menu must grow at least linearly in the number of available actions, so no universal upper bound exists for the size of the optimal menu in the general single-dimensional setting. We also provide a sufficient condition under which selling only the fully informative experiment achieves the optimal revenue.For multi-dimensional environments, we prove that even in arguably the simplest matching utility environment with 3 states and 3 actions, the ratio between the optimal revenue and the revenue by selling only the fully informative experiment can grow immediately to a polynomial of the number of agent types. Nonetheless, if the distribution is uniform, we show that selling only the fully informative experiment is indeed the optimal mechanism.
登录
查看更多内容
DOI:
--
发表时间:
2013
影响因子:
11.1
作者:
Xinye Li;A. Yao
通讯作者:
A. Yao
影响因子:
8.2
作者:
Azevedo, Eduardo M.;Deng, Alex;Weyl, E. Glen
通讯作者:
Weyl, E. Glen
DOI:
--
发表时间:
2020
期刊:
The Review of Economic Studies
影响因子:
--
作者:
Nima Haghpanah;Jason D. Hartline
通讯作者:
Jason D. Hartline
DOI:
10.1145/2600057.2602883
发表时间:
2014
期刊:
Proceedings of the fifteenth ACM conference on Economics and computation
影响因子:
--
作者:
Yiannis Giannakopoulos;E. Koutsoupias
通讯作者:
E. Koutsoupias
DOI:
--
发表时间:
2017
期刊:
ACM Conference on Economics and Computation
影响因子:
--
作者:
Nikhil R. Devanur
通讯作者:
Nikhil R. Devanur