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Large language model (LLM) agents have shown increasing promise for collaborative task completion. However, existing multi-agent frameworks often rely on static workflows, fixed roles, and limited inter-agent communication, reducing their…

Multiagent Systems · Computer Science 2026-02-13 Chengxuan Xia , Qianye Wu , Sixuan Tian , Yilun Hao

Large language models (LLMs) have significantly advanced natural language processing, but their massive parameter counts create substantial computational and memory challenges during deployment. Post-training quantization (PTQ) has emerged…

Machine Learning · Computer Science 2025-11-25 Cuong Pham , Hoang Anh Dung , Cuong C. Nguyen , Trung Le , Gustavo Carneiro , Thanh-Toan Do

Prompt-based adversarial attacks have become an effective means to assess the robustness of large language models (LLMs). However, existing approaches often treat prompts as monolithic text, overlooking their structural…

Computation and Language · Computer Science 2025-08-05 Yujia Zheng , Tianhao Li , Haotian Huang , Tianyu Zeng , Jingyu Lu , Chuangxin Chu , Yuekai Huang , Ziyou Jiang , Qian Xiong , Yuyao Ge , Mingyang Li

Fine-tuning large language models (LLMs) is computationally intensive because it requires updating all parameters. Low-Rank Adaptation (LoRA) improves efficiency by modifying only a subset of weights but introduces a trade-off between…

Machine Learning · Computer Science 2024-12-19 Abdessalam Ed-dib , Zhanibek Datbayev , Amine Mohamed Aboussalah

We propose a flexible gradient tracking approach with adjustable computation and communication steps for solving distributed stochastic optimization problem over networks. The proposed method allows each node to perform multiple local…

Optimization and Control · Mathematics 2023-06-13 Yan Huang , Jinming Xu

Whole-page optimization (WPO) decides how search and recommendation results are surfaced to users, and large language models (LLMs) open a new route to it by treating page generation as sequence generation. Adapting LLMs to web-scale WPO,…

Machine Learning · Computer Science 2026-05-26 Xinyuan Wang , Liang Wu , Dongjie Wang , Yanjie Fu

Large language models (LLMs) typically operate in a question-answering paradigm, where the quality of the input prompt critically affects the response. Automated Prompt Optimization (APO) aims to overcome the cognitive biases of manually…

Computation and Language · Computer Science 2025-11-13 Jian Zhang , Zhangqi Wang , Haiping Zhu , Kangda Cheng , Kai He , Bo Li , Qika Lin , Jun Liu , Erik Cambria

We propose a novel decomposition framework for the distributed optimization of general nonconvex sum-utility functions arising naturally in the system design of wireless multiuser interfering systems. Our main contributions are: i) the…

Information Theory · Computer Science 2016-11-18 Gesualdo Scutari , Francisco Facchinei , Peiran Song , Daniel P. Palomar , Jong-Shi Pang

Large language models (LLMs) have achieved great success across diverse tasks, and fine-tuning is sometimes needed to further enhance generation quality. Most existing methods rely on human supervision or parameter retraining, both of which…

Computation and Language · Computer Science 2025-05-27 Zhen-Yu Zhang , Jiandong Zhang , Huaxiu Yao , Gang Niu , Masashi Sugiyama

Advancements in machine learning for molecular property prediction have improved accuracy but at the expense of higher computational cost and longer training times. Recently, the Joint Multi-domain Pre-training (JMP) foundation model has…

Machine Learning · Computer Science 2025-04-29 Yasir Ghunaim , Andrés Villa , Gergo Ignacz , Gyorgy Szekely , Motasem Alfarra , Bernard Ghanem

Bargaining, a critical aspect of real-world interactions, presents challenges for large language models (LLMs) due to limitations in strategic depth and adaptation to complex human factors. Existing benchmarks often fail to capture this…

Machine Learning · Computer Science 2025-07-15 Jihwan Oh

Alignment of Large Language Models (LLMs) is the ability to satisfy desired objectives during generation, which is critical for trustworthy deployment. In practice, alignment is often operationalized through multiple objectives such as…

Computation and Language · Computer Science 2026-05-19 Gautam Siddharth Kashyap , Mark Dras , Usman Naseem

Many real-world problems require trading off multiple competing objectives. However, these objectives are often in different units and/or scales, which can make it challenging for practitioners to express numerical preferences over…

Current LLM alignment methods are readily broken through specifically crafted adversarial prompts. While crafting adversarial prompts using discrete optimization is highly effective, such attacks typically use more than 100,000 LLM calls.…

Machine Learning · Computer Science 2025-03-04 Simon Geisler , Tom Wollschläger , M. H. I. Abdalla , Johannes Gasteiger , Stephan Günnemann

Optimization methods are widely employed in deep learning to identify and mitigate undesired model responses. While gradient-based techniques have proven effective for image models, their application to language models is hindered by the…

Machine Learning · Computer Science 2025-02-18 Zi Wang , Divyam Anshumaan , Ashish Hooda , Yudong Chen , Somesh Jha

Recently, advanced large language models (LLMs) have emerged at an increasingly rapid pace. However, when faced with complex problems, most users are often unable to provide accurate and effective prompts to interact with LLMs, thus…

Computation and Language · Computer Science 2026-04-17 Wenjin Liu , Haoran Luo , Xueyuan Lin , Haoming Liu , Tiesunlong Shen , Jiapu Wang , Rui Mao , Erik Cambria

The large language models have achieved superior performance on various natural language tasks. One major drawback of such approaches is they are resource-intensive in fine-tuning new datasets. Soft-prompt tuning presents a…

Computation and Language · Computer Science 2023-10-30 Guoxin Chen , Yiming Qian , Bowen Wang , Liangzhi Li

Recent advancements in large language models (LLMs) focus on aligning to heterogeneous human expectations and values via multi-objective preference alignment. However, existing methods are dependent on the policy model parameters, which…

Computation and Language · Computer Science 2025-07-22 Kailai Yang , Zhiwei Liu , Qianqian Xie , Jimin Huang , Tianlin Zhang , Sophia Ananiadou

Solving multi-objective optimization problems is important in various applications where users are interested in obtaining optimal policies subject to multiple, yet often conflicting objectives. A typical approach to obtain optimal policies…

Systems and Control · Electrical Eng. & Systems 2019-09-27 Huixin Zhan , Yongcan Cao

Due to the substantial scale of Large Language Models (LLMs), the direct application of conventional compression methodologies proves impractical. The computational demands associated with even minimal gradient updates present challenges,…

Machine Learning · Computer Science 2023-12-13 Arnav Chavan , Nahush Lele , Deepak Gupta