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Katsuhide Fujita

7 accepted papers

2026

CtoD-MAT: Bridging Centralized and Decentralized Execution in Multi-Agent Reinforcement Learning (Student Abstract)

AAAI 2026technical

Although centralized training with centralized execution (CTCE) excels at multi-agent coordination, its reliance on global information limits its use in the real world. Conversely, the practical decentralized execution (CTDE) paradigm often struggles with complex coordination. This paper bridges thi

Cited by 0SourcePDFScholar
2026

Strategic Tool Enhanced AI Agent for Multi-Issue Negotiation (Student Abstract)

AAAI 2026technical

Automated negotiation, a form of interaction among autonomous agents, plays a central role in multi-agent systems, yet the application of large language model (LLM) in this domain remains underexplored. An LLM can serve as a meta-strategist, adaptively selecting explicit strategies for execution by

Cited by 0SourcePDFScholar
2026

[COMP25] The Automated Negotiating Agents Competition (ANAC) 2026 Challenges and Results

IJCAI 2026

This paper presents the primary research challenges and key findings from the 15th International Automated Negotiating Agents Competition (ANAC 2025), one of the official competitions of IJCAI 2025. We focus on two critical domains: multi-deal negotiations and the development of agents capable of co

Cited by 0Scholar
2025

Sequential Order Adjustment of Action Decisions for Multi-Agent Transformer (Student Abstract)

AAAI 2025technical

Multi-agent reinforcement learning (MARL) trains multiple agents in shared environments. Recently, MARL models have significantly improved performance by leveraging sequential decision-making processes. Although these models can enhance performance, they do not explicitly con-sider the importance of…

Cited by 0SourcePDFScholar
2024

Coordination of Emergent Demand Changes via Value-Based Negotiation for Supply Chain Management (Student Abstract)

AAAI 2024technical

We propose an automated negotiation for a reinforcement learning agent to adapt the agent to unexpected situations such as demand changes in supply chain management (SCM). Existing studies that consider reinforcement learning and SCM assume a centralized environment where the coordination of chain c…

Cited by 0SourcePDFScholar
2023

Reward-Based Negotiating Agent Strategies

AAAI 2023technical

This study proposed a novel reward-based negotiating agent strategy using an issue-based represented deep policy network. We compared the negotiation strategies with reinforcement learning (RL) by the tournaments toward heuristics-based champion agents in multi-issue negotiation. A bilateral multi-i…

Cited by 10SourcePDFScholar
2023

Scalable Negotiating Agent Strategy via Multi-Issue Policy Network (Student Abstract)

AAAI 2023technical

Previous research on the comprehensive negotiation strategy using deep reinforcement learning (RL) has scalability issues of not performing effectively in the large-sized domains. We improve negotiation strategy via deep RL by considering an issue-based represented deep policy network to deal with m…

Cited by 1SourcePDFScholar