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Increasing a ML model accuracy is not enough, we must also increase its trustworthiness. This is an important step for building resilient AI systems for safety-critical applications such as automotive, finance, and healthcare. For that…

Artificial Intelligence · Computer Science 2022-05-03 Gusseppe Bravo-Rocca , Peini Liu , Jordi Guitart , Ajay Dholakia , David Ellison , Miroslav Hodak

Multi-Agent Systems have recently emerged as a promising paradigm for collaborative reasoning and solving complex tasks. However, the design of collaborative learning algorithms in multi-agent systems faces several challenges, including…

Multiagent Systems · Computer Science 2025-08-27 Yingfan Deng , Anhao Zhou , Yuan Yuan , Xiao Zhang , Yifei Zou , Dongxiao Yu

Prompt optimization has become a practical way to improve the performance of Large Language Models (LLMs) without retraining. However, most existing frameworks treat evaluation as a black box, relying solely on outcome scores without…

Multiagent Systems · Computer Science 2026-04-01 Wonduk Seo , Juhyeon Lee , Junseo Koh , Wonseok Choi , Hyunjin An , Jian Park , Seunghyun lee , Haihua Chen , Yi Bu

One obstacle to applying reinforcement learning algorithms to real-world problems is the lack of suitable reward functions. Designing such reward functions is difficult in part because the user only has an implicit understanding of the task…

Machine Learning · Computer Science 2018-11-20 Jan Leike , David Krueger , Tom Everitt , Miljan Martic , Vishal Maini , Shane Legg

Explaining multi-agent systems (MAS) is urgent as these systems become increasingly prevalent in various applications. Previous work has proveided explanations for the actions or states of agents, yet falls short in understanding the…

Artificial Intelligence · Computer Science 2025-07-18 Jianming Chen , Yawen Wang , Junjie Wang , Xiaofei Xie , jun Hu , Qing Wang , Fanjiang Xu

Ranking is a fundamental and widely studied problem in scenarios such as search, advertising, and recommendation. However, joint optimization for multi-scenario ranking, which aims to improve the overall performance of several ranking…

Artificial Intelligence · Computer Science 2018-09-18 Jun Feng , Heng Li , Minlie Huang , Shichen Liu , Wenwu Ou , Zhirong Wang , Xiaoyan Zhu

Integrating Large Language Models (LLMs) with external tools via multi-agent systems offers a promising new paradigm for decomposing and solving complex problems. However, training these systems remains notoriously difficult due to the…

Artificial Intelligence · Computer Science 2026-02-10 Yanming Li , Xuelin Zhang , WenJie Lu , Ziye Tang , Maodong Wu , Haotian Luo , Tongtong Wu , Zijie Peng , Hongze Mi , Yibo Feng , Naiqiang Tan , Chao Huang , Hong Chen , Li Shen

To promote cooperation in Multi-Agent Reinforcement Learning, the reward signals of all agents can be aggregated together, forming global rewards that are commonly known as the fully cooperative setting. However, global rewards are usually…

Machine Learning · Computer Science 2026-01-30 Bang Giang Le , Viet Cuong Ta

Collaborative reasoning with multiple agents offers the potential for more robust and diverse problem-solving. However, existing approaches often suffer from homogeneous agent behaviors and lack of reflective and rethinking capabilities. We…

Artificial Intelligence · Computer Science 2025-11-13 Jian Zhang , Zhiyuan Wang , Zhangqi Wang , Fangzhi Xu , Qika Lin , Lingling Zhang , Rui Mao , Erik Cambria , Jun Liu

In cooperative Multi-Agent Planning (MAP), a set of goals has to be achieved by a set of agents. Independently of whether they perform a pre-assignment of goals to agents or they directly search for a solution without any goal assignment,…

Artificial Intelligence · Computer Science 2023-05-23 Alberto Pozanco , Daniel Borrajo

Training cooperative agents in sparse-reward scenarios poses significant challenges for multi-agent reinforcement learning (MARL). Without clear feedback on actions at each step in sparse-reward setting, previous methods struggle with…

Machine Learning · Computer Science 2025-05-14 Shuai Han , Mehdi Dastani , Shihan Wang

We propose an improved algorithm by identifying and encouraging cooperative behavior in multi-agent environments. First, we analyze the shortcomings of existing algorithms in addressing multi-agent reinforcement learning problems. Then,…

Multiagent Systems · Computer Science 2025-08-21 Junjie Qi , Siqi Mao , Tianyi Tan

Cooperative multi-agent policy gradient (MAPG) algorithms have recently attracted wide attention and are regarded as a general scheme for the multi-agent system. Credit assignment plays an important role in MAPG and can induce cooperation…

Machine Learning · Computer Science 2023-03-07 Wubing Chen , Wenbin Li , Xiao Liu , Shangdong Yang , Yang Gao

Multi-agent adversarial inverse reinforcement learning (MA-AIRL) is a recent approach that applies single-agent AIRL to multi-agent problems where we seek to recover both policies for our agents and reward functions that promote expert-like…

Multiagent Systems · Computer Science 2020-02-26 Wonseok Jeon , Paul Barde , Derek Nowrouzezahrai , Joelle Pineau

Memory systems are widely adopted to enhance LLMs for long-horizon tasks, and are commonly organized as multi-agent pipelines with memory building, summarizing, and retrieval agents. To empower this system, existing RL-based methods either…

Multiagent Systems · Computer Science 2026-05-07 Marina Mao , Alexandr Liu , Pengbo Li , Siheng Li , Bo Zhou , Xiang Wang

Modern scientific discovery increasingly relies on high-performance computing for complex modeling and simulation. A key challenge in improving parallel program performance is efficiently mapping tasks to processors and data to memory, a…

Machine Learning · Computer Science 2025-06-02 Anjiang Wei , Allen Nie , Thiago S. F. X. Teixeira , Rohan Yadav , Wonchan Lee , Ke Wang , Alex Aiken

Multi-agent reinforcement learning involves multiple agents interacting with each other and a shared environment to complete tasks. When rewards provided by the environment are sparse, agents may not receive immediate feedback on the…

Machine Learning · Computer Science 2021-03-31 Baicen Xiao , Bhaskar Ramasubramanian , Radha Poovendran

Complex scheduling problems require a large amount computation power and innovative solution methods. The objective of this paper is the conception and implementation of a multi-agent system that is applicable in various problem domains.…

Multiagent Systems · Computer Science 2020-04-21 Peter Hillmann , Tobias Uhlig , Gabi Dreo Rodosek , Oliver Rose

We consider a fully cooperative multi-agent system where agents cooperate to maximize a system's utility in a partial-observable environment. We propose that multi-agent systems must have the ability to (1) communicate and understand the…

Artificial Intelligence · Computer Science 2021-01-01 Jianyu Su , Stephen Adams , Peter A. Beling

Multi-agent systems commonly distribute tasks among specialized, autonomous agents, yet they often lack mechanisms to replace or reassign underperforming agents in real time. Inspired by the free-agency model of Major League Baseball, the…

Multiagent Systems · Computer Science 2025-02-11 Jung-Hua Liu