Presentation 2022-06-10
Optimal preference satisfaction for conflict-free joint decisions
Hiroaki Shinkawa, Nicolas Chauvet, Guillaume Bachelier, Andre Roehm, Ryoichi Horisaki, Makoto Naruse,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We all have preferences when multiple choices are available. If we insist on satisfying our preferences only, we may suffer a loss due to conflicts with other people’s identical selections. Such a case applies when the choice cannot be divided into multiple pieces due to the intrinsic nature of the resources. Former studies, such as the top trading cycle, examined how to conduct fair joint decision-making while avoiding decision conflicts from the perspective of game theory when multiple players have their own deterministic preference profiles. However, in reality, probabilistic preferences can naturally appear in relation to the stochastic decision-making of humans. Here, we theoretically derive conflict-free joint decision-making that can satisfy the probabilistic preferences of all individual players. More specifically, we mathematically prove the conditions wherein the deviation of the resultant chance of obtaining each choice from the individual preference profile, which we call the loss, becomes zero, meaning that all players’ satisfaction is perfectly appreciated while avoiding decision conflicts. Furthermore, even in situations where zero-loss conflict-free joint decision-making is unachievable, we show how to derive joint decision-making that accomplishes the theoretical minimum loss while ensuring conflict-free choices. Numerical demonstrations are also shown with several benchmarks.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) joint decision-making / resource allocation / preference satisfaction / multi-armed bandit / optimization / game theory
Paper # NLP2022-20,CCS2022-20
Date of Issue 2022-06-02 (NLP, CCS)

Conference Information
Committee CCS / NLP
Conference Date 2022/6/9(2days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Megumi Akai(Hokkaido Univ.) / Akio Tsuneda(Kumamoto Univ.)
Vice Chair Masaki Aida(TMU) / Hidehiro Nakano(Tokyo City Univ.) / Hiroyuki Torikai(Hosei Univ.)
Secretary Masaki Aida(TDK) / Hidehiro Nakano(Shibaura Insti. of Tech.) / Hiroyuki Torikai(Sojo Univ.)
Assistant Tomoyuki Sasaki(Shonan Instit. of Tech.) / Hiroyasu Ando(Tsukuba Univ.) / Miki Kobayashi(Rissho Univ.) / " Hiroyuki YASUDA(The Univ. of Tokyo) / Yuichi Yokoi(Nagasaki Univ.) / Yoshikazu Yamanaka(Utsunomiya Univ.)

Paper Information
Registration To Technical Committee on Complex Communication Sciences / Technical Committee on Nonlinear Problems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optimal preference satisfaction for conflict-free joint decisions
Sub Title (in English)
Keyword(1) joint decision-making
Keyword(2) resource allocation
Keyword(3) preference satisfaction
Keyword(4) multi-armed bandit
Keyword(5) optimization
Keyword(6) game theory
1st Author's Name Hiroaki Shinkawa
1st Author's Affiliation The University of Tokyo(Univ. Tokyo)
2nd Author's Name Nicolas Chauvet
2nd Author's Affiliation The University of Tokyo(Univ. Tokyo)
3rd Author's Name Guillaume Bachelier
3rd Author's Affiliation Universite Grenoble Alpes(Univ. Grenoble Alpes)
4th Author's Name Andre Roehm
4th Author's Affiliation The University of Tokyo(Univ. Tokyo)
5th Author's Name Ryoichi Horisaki
5th Author's Affiliation The University of Tokyo(Univ. Tokyo)
6th Author's Name Makoto Naruse
6th Author's Affiliation The University of Tokyo(Univ. Tokyo)
Date 2022-06-10
Paper # NLP2022-20,CCS2022-20
Volume (vol) vol.122
Number (no) NLP-65,CCS-66
Page pp.pp.100-105(NLP), pp.100-105(CCS),
#Pages 6
Date of Issue 2022-06-02 (NLP, CCS)