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Large Language Models (LLMs) have shown great potential in automatically generating and optimizing (meta)heuristics, making them valuable tools in heuristic optimization tasks. However, LLMs are generally inefficient when it comes to…

Neural and Evolutionary Computing · Computer Science 2025-05-23 Niki van Stein , Diederick Vermetten , Thomas Bäck

Bayesian optimization has recently emerged as a popular method for the sample-efficient optimization of expensive black-box functions. However, the application to high-dimensional problems with several thousand observations remains…

Machine Learning · Computer Science 2020-02-26 David Eriksson , Michael Pearce , Jacob R Gardner , Ryan Turner , Matthias Poloczek

Large language model multi-agent systems (LLM-MAS) offer a promising paradigm for harnessing collective intelligence to achieve more advanced forms of AI behaviour. While recent studies suggest that LLM-MAS can outperform LLM single-agent…

Artificial Intelligence · Computer Science 2025-10-07 Bohan Tang , Huidong Liang , Keyue Jiang , Xiaowen Dong

The difficulty and expense of obtaining large-scale human responses make Large Language Models (LLMs) an attractive alternative and a promising proxy for human behavior. However, prior work shows that LLMs often produce homogeneous outputs…

Artificial Intelligence · Computer Science 2025-10-09 Manh Hung Nguyen , Sebastian Tschiatschek , Adish Singla

To lower the expertise barrier in machine learning, the AutoML community has focused on the CASH problem, which jointly automates algorithm selection and hyperparameter tuning. While traditional methods like Bayesian Optimization (BO)…

Machine Learning · Computer Science 2026-05-08 Beicheng Xu , Weitong Qian , Lingching Tung , Yupeng Lu , Bin Cui

Many important scientific problems involve multivariate optimization coupled with slow and laborious experimental measurements. These complex, high-dimensional searches can be defined by non-convex optimization landscapes that resemble…

Machine Learning · Computer Science 2025-09-22 Abdoulatif Cissé , Xenophon Evangelopoulos , Vladimir V. Gusev , Andrew I. Cooper

Coordinating multiple autonomous agents in shared environments under decentralized conditions is a long-standing challenge in robotics and artificial intelligence. This work addresses the problem of decentralized goal assignment for…

Artificial Intelligence · Computer Science 2025-10-29 Murad Ismayilov , Edwin Meriaux , Shuo Wen , Gregory Dudek

Multi-agent systems, which consist of multiple AI models interacting within a shared environment, are increasingly used for persona-based interactions. However, if not carefully designed, these systems can reinforce implicit biases in large…

Computation and Language · Computer Science 2025-07-03 Imran Mirza , Cole Huang , Ishwara Vasista , Rohan Patil , Asli Akalin , Sean O'Brien , Kevin Zhu

Multi-agent LLM frameworks are widely used to accelerate the development of agent systems powered by large language models (LLMs). These frameworks impose distinct architectural structures that govern how agents interact, store information,…

Artificial Intelligence · Computer Science 2026-02-04 Abdelghny Orogat , Ana Rostam , Essam Mansour

Service system performance depends on how participants respond to design choices, but modeling these responses is hard due to the complexity of human behavior. We introduce an LLM-powered multi-agent simulation (LLM-MAS) framework for…

Artificial Intelligence · Computer Science 2026-04-07 Yanyuan Wang , Xiaowei Zhang

Hyper-parameters are essential and critical for the performance of communication algorithms. However, current hyper-parameters optimization approaches for Warm-Start Particles Swarm Optimization with Crossover and Mutation (WS-PSO-CM)…

Information Theory · Computer Science 2025-07-10 Wanzhe Wang , Jianqiu Peng , Menghao Hu , Weihuang Zhong , Tong Zhang , Shuai Wang , Yixin Zhang , Mingjie Shao , Wanli Ni

Multi-objective alignment from human feedback (MOAHF) in large language models (LLMs) is a challenging problem as human preferences are complex, multifaceted, and often conflicting. Recent works on MOAHF considered a-priori multi-objective…

Machine Learning · Computer Science 2024-12-10 Subhojyoti Mukherjee , Anusha Lalitha , Sailik Sengupta , Aniket Deshmukh , Branislav Kveton

In this reproducibility study, we revisit the LLAMBO framework of Daxberger et al. (2024), a prompting-based Bayesian optimization (BO) method that uses large language models as discriminative surrogates and acquisition optimizers via…

Computation and Language · Computer Science 2025-11-25 Adam Rychert , Gasper Spagnolo , Evgenii Posashkov

Multi-objective optimization aims at finding trade-off solutions to conflicting objectives. These constitute the Pareto optimal set. In the context of expensive-to-evaluate functions, it is impossible and often non-informative to look for…

Machine Learning · Statistics 2020-02-20 David Gaudrie , Rodolphe Le Riche , Victor Picheny , Benoit Enaux , Vincent Herbert

Recent studies show that collaborating multiple large language model (LLM) powered agents is a promising way for task solving. However, current approaches are constrained by using a fixed number of agents and static communication…

Computation and Language · Computer Science 2024-11-18 Zijun Liu , Yanzhe Zhang , Peng Li , Yang Liu , Diyi Yang

Multi-agent large language model (LLM) systems have shown promise for solving complex tasks through agent collaboration. However, existing frameworks assign tasks based on predefined roles without considering whether an agent can accurately…

Artificial Intelligence · Computer Science 2026-05-19 Chenyu Wang , Yang Shu

Many real world applications can be framed as multi-objective optimization problems, where we wish to simultaneously optimize for multiple criteria. Bayesian optimization techniques for the multi-objective setting are pertinent when the…

Machine Learning · Computer Science 2019-06-24 Biswajit Paria , Kirthevasan Kandasamy , Barnabás Póczos

Multi-agent systems (MAS) leveraging the impressive capabilities of Large Language Models (LLMs) hold significant potential for tackling complex tasks. However, most current MAS depend on manually designed agent roles and communication…

Computation and Language · Computer Science 2026-03-10 Zixuan Ke , Austin Xu , Yifei Ming , Xuan-Phi Nguyen , Ryan Chin , Caiming Xiong , Shafiq Joty

Large Language Models (LLMs) have shown impressive abilities in many applications. When a concrete and precise answer is desired, it is important to have a quantitative estimation of the potential error rate. However, this can be…

Computation and Language · Computer Science 2024-12-20 Theodore Zhao , Mu Wei , J. Samuel Preston , Hoifung Poon

Latent-space Bayesian optimization (LSBO) extends Bayesian optimization to structured domains, such as molecular design, by searching in the continuous latent space of a generative model. However, most LSBO methods assume a fixed objective,…

Machine Learning · Statistics 2026-03-03 Tuan A. Vu , Julien Martinelli , Harri Lähdesmäki