activity
20242026
collaborators

17 papers

cs.GT2026

Fairness and Non-wastefulness in Matching with Siblings and Initial Enrollments: Compatibility and Complexity

Haris Aziz, Gergely Csáji, Zhaohong Sun +1

We study a two-sided matching problem between families and daycare centers in which a family may have multiple children with joint preferences, and some children may already be enr…

cs.GT2026

MLN-EIGS: A multilayer network framework for solving Stackelberg escape interdiction games on dynamic transportation networks

Sukanya Samanta, Kei Kimura, Makoto Yokoo +1

Interdicting an escaping criminal with limited police resources on large-scale transportation networks is a challenging problem due to the dynamic nature of both attacker movement…

cs.GT2026

Compatible -Relaxations of Fairness and Non-Wastefulness Under Hereditary Constraints

Tenma Wakasugi, Zhaohong Sun, Kei Kimura +1

We study two-sided matching markets under hereditary constraints, which extend beyond simple capacity limits and arise in applications such as diversity requirements and refugee re…

cs.GT2025

A New Relaxation of Fairness in Two-Sided Matching Respecting Acquaintance Relationships

Ryota Takeshima, Kei Kimura, Ayumu Kuroki +2

Two-sided matching, such as matching between students and schools, has been applied to various aspects of real life and has been the subject of much research, however, it has been…

cs.GT2025

Coalitions on the Fly in Cooperative Games

Yao Zhang, Indrajit Saha, Zhaohong Sun +1

In this work, we examine a sequential setting of a cooperative game in which players arrive dynamically to form coalitions and complete tasks either together or individually, depen…

cs.LG2025

COBRA: Contextual Bandit Algorithm for Ensuring Truthful Strategic Agents

Arun Verma, Indrajit Saha, Makoto Yokoo +1

This paper considers a contextual bandit problem involving multiple agents, where a learner sequentially observes the contexts and the agent's reported arms, and then selects the a…

cs.GT2025

Whoever Said Money Won't Solve All Your Problems? Weighted Envy-free Allocation with Subsidy

Noga Klein Elmalem, Haris Aziz, Rica Gonen +7

We explore solutions for fairly allocating indivisible items among agents assigned weights representing their entitlements. Our fairness goal is weighted-envy-freeness (WEF), where…

cs.GT2025

Probabilistic Analysis of Stable Matching in Large Markets with Siblings

Zhaohong Sun, Tomohiko Yokoyama, Makoto Yokoo

We study a practical centralized matching problem which assigns children to daycare centers. The collective preferences of siblings from the same family introduce complementarities…

cs.GT2024

Achieving Balanced Representation in School Choice with Diversity Goals

Zhaohong Sun, Makoto Yokoo

Student placements under diversity constraints are a common practice globally. This paper addresses the selection of students by a single school under a \emph{one-to-one convention…

cs.GT2024

Parameterized Voter Relevance in Facility Location Games with Tree-Shaped Invitation Graphs

Ryoto Ando, Kei Kimura, Taiki Todo +1

Diffusion mechanism design, which investigate how to incentivise agents to invite as many colleagues to a multi-agent decision making as possible, is a new research paradigm at the…

cs.GT2024

Analyzing Incentives and Fairness in Ordered Weighted Average for Facility Location Games

Kento Yoshida, Kei Kimura, Taiki Todo +1

Facility location games provide an abstract model of mechanism design. In such games, a mechanism takes a profile of single-peaked preferences over an interval as an input and…

cs.LG2024

Keep Everyone Happy: Online Fair Division of Numerous Items with Few Copies

Arun Verma, Indrajit Saha, Makoto Yokoo +1

This paper considers a novel variant of the online fair division problem involving multiple agents in which a learner sequentially observes an indivisible item that must be irrevoc…

cs.GT2024

Weighted Envy-free Allocation with Subsidy

Haris Aziz, Xin Huang, Kei Kimura +4

We consider the problem of fair allocation of indivisible items with subsidies when agents have weighted entitlements. After highlighting several important differences from the unw…

cs.AI2024

Solving a Stackelberg Game on Transportation Networks in a Dynamic Crime Scenario: A Mixed Approach on Multi-Layer Networks

Sukanya Samanta, Kei Kimura, Makoto Yokoo +1

Interdicting a criminal with limited police resources is a challenging task as the criminal changes location over time. The size of the large transportation network further adds to…

cs.LG2024

Online -Convex Minimization

Ken Yokoyama, Shinji Ito, Tatsuya Matsuoka +2

An online decision-making problem is a learning problem in which a player repeatedly makes decisions in order to minimize the long-term loss. These problems that emerge in applicat…

cs.GT2024

Fairness and efficiency trade-off in two-sided matching

Sung-Ho Cho, Kei Kimura, Kiki Liu +5

The theory of two-sided matching has been extensively developed and applied to many real-life application domains. As the theory has been applied to increasingly diverse types of e…

cs.GT2024

Stable Matchings in Practice: A Constraint Programming Approach

Zhaohong Sun, Naoyuki Yamada, Yoshihiro Takenami +2

We study a practical two-sided matching problem of allocating children to daycare centers, which has significant social implications. We are cooperating with several municipalities…