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Developing compound Large Language Model (LLM) applications is becoming an increasingly prevalent approach to solving real-world problems. In these applications, an LLM collaborates with various external modules, including APIs and even…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-04-08 Botao Zhu , Chen Chen , Xiaoyi Fan , Yifei Zhu

Large language models (LLMs) are typically governed by post-training alignment (e.g., RLHF or DPO), which yields a largely static policy during deployment and inference. However, real-world safety is a full-lifecycle problem: static…

Machine Learning · Computer Science 2026-03-18 Zeyu Zhang , Xiangxiang Dai , Ziyi Han , Xutong Liu , John C. S. Lui

Contemporary generative recommendation systems face significant challenges in handling multimodal data, eliminating algorithmic biases, and providing transparent decision-making processes. This paper introduces an enhanced generative…

Information Retrieval · Computer Science 2025-10-03 Bo Ma , Hang Li , ZeHua Hu , XiaoFan Gui , LuYao Liu , Simon Lau

We study offline scheduling for large language model (LLM) serving under a fixed KV-cache memory budget, where requests have heterogeneous prompt (prefill) and response (decode) lengths. Prompt tokens determine initial KV usage, and each…

Optimization and Control · Mathematics 2026-02-11 Meixuan Wang , Yinyu Ye , Zijie Zhou

Large language models (LLMs) exhibit complementary strengths across domains and come with varying inference costs, motivating the design of multi-agent LLM systems where specialized models collaborate efficiently. Existing approaches…

Computation and Language · Computer Science 2025-11-05 Bowen Jin , TJ Collins , Donghan Yu , Mert Cemri , Shenao Zhang , Mengyu Li , Jay Tang , Tian Qin , Zhiyang Xu , Jiarui Lu , Guoli Yin , Jiawei Han , Zirui Wang

In this study, we delve into the Thresholding Linear Bandit (TLB) problem, a nuanced domain within stochastic Multi-Armed Bandit (MAB) problems, focusing on maximizing decision accuracy against a linearly defined threshold under resource…

Machine Learning · Computer Science 2024-03-12 Yun-Ang Wu , Yun-Da Tsai , Shou-De Lin

Multimodal Large Language Models (MLLMs) have been rapidly advancing, enabling cross-modal understanding and generation, and propelling artificial intelligence towards artificial general intelligence. However, existing MLLM inference…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-11-11 Xianzhe Dong , Tongxuan Liu , Yuting Zeng , Liangyu Liu , Yang Liu , Siyu Wu , Yu Wu , Hailong Yang , Ke Zhang , Jing Li

Multimodal large language models (MLLMs) promise enhanced reasoning by integrating diverse inputs such as text, vision, and audio. Yet cross-modal reasoning remains underexplored, with conflicting reports on whether added modalities help or…

Computation and Language · Computer Science 2026-05-01 Yucheng Wang , Yifan Hou , Aydin Javadov , Mubashara Akhtar , Mrinmaya Sachan

Robust deployment of large multimodal models (LMMs) in real-world scenarios requires access to external knowledge sources, given the complexity and dynamic nature of real-world information. Existing approaches such as retrieval-augmented…

Computer Vision and Pattern Recognition · Computer Science 2025-06-26 Jinming Wu , Zihao Deng , Wei Li , Yiding Liu , Bo You , Bo Li , Zejun Ma , Ziwei Liu

Extracting actionable intelligence from distributed, heterogeneous, correlated and high-dimensional data sources requires run-time processing and learning both locally and globally. In the last decade, a large number of meta-learning…

Machine Learning · Computer Science 2016-11-01 Cem Tekin , Jinsung Yoon , Mihaela van der Schaar

The task adaptation and alignment of Large Multimodal Models (LMMs) have been significantly advanced by instruction tuning and further strengthened by recent preference optimization. Yet, most LMMs still suffer from severe modality…

Machine Learning · Computer Science 2025-10-10 Chenxi Liu , Tianyi Xiong , Yanshuo Chen , Ruibo Chen , Yihan Wu , Junfeng Guo , Tianyi Zhou , Heng Huang

Large Language Models (LLMs) have achieved remarkable success across a wide range of natural language tasks, and recent efforts have sought to extend their capabilities to multimodal domains and resource-constrained environments. However,…

Machine Learning · Computer Science 2025-05-26 Yun-Da Tsai

Aligning Large Language Models (LLM) to address subjectivity and nuanced preference levels requires adequate flexibility and control, which can be a resource-intensive and time-consuming procedure. Existing training-time alignment methods…

LLM search agents increasingly rely on tools at inference time, but their trajectories are often constrained by hard limits on both tool calls and generated tokens. Under such dual budgets, better answers require not only stronger models,…

Artificial Intelligence · Computer Science 2026-05-08 Zhengru Fang , Senkang Forest Hu , Zhonghao Chang , Yu Guo , Yihang Tao , Hongyao Liu , Mengzhe Ruan , Jun Huang , Yuguang Fang

While large language models (LLMs) are still being adopted to new domains and utilized in novel applications, we are experiencing an influx of the new generation of foundation models, namely multi-modal large language models (MLLMs). These…

Computation and Language · Computer Science 2024-08-23 Kian Ahrabian , Zhivar Sourati , Kexuan Sun , Jiarui Zhang , Yifan Jiang , Fred Morstatter , Jay Pujara

LLM-based agents show strong potential for long-horizon reasoning, yet their context size is limited by deployment factors (e.g., memory, latency, and cost), yielding a constrained context budget. As interaction histories grow, this induces…

Artificial Intelligence · Computer Science 2026-04-03 Yong Wu , YanZhao Zheng , TianZe Xu , ZhenTao Zhang , YuanQiang Yu , JiHuai Zhu , Chao Ma , BinBin Lin , BaoHua Dong , HangCheng Zhu , RuoHui Huang , Gang Yu

We consider the Scale-Free Adversarial Multi Armed Bandits(MAB) problem. At the beginning of the game, the player only knows the number of arms $n$. It does not know the scale and magnitude of the losses chosen by the adversary or the…

Machine Learning · Computer Science 2021-10-12 Sudeep Raja Putta , Shipra Agrawal

We consider the classic online learning and stochastic multi-armed bandit (MAB) problems, when at each step, the online policy can probe and find out which of a small number ($k$) of choices has better reward (or loss) before making its…

Data Structures and Algorithms · Computer Science 2022-11-08 Aditya Bhaskara , Sreenivas Gollapudi , Sungjin Im , Kostas Kollias , Kamesh Munagala

Large Language Models (LLMs) exhibit potential artificial generic intelligence recently, however, their usage is costly with high response latency. Given mixed LLMs with their own strengths and weaknesses, LLM routing aims to identify the…

Computation and Language · Computer Science 2025-02-27 Xinyuan Wang , Yanchi Liu , Wei Cheng , Xujiang Zhao , Zhengzhang Chen , Wenchao Yu , Yanjie Fu , Haifeng Chen

Multimodal large language models (MLLMs) have extended the success of large language models (LLMs) to multiple data types, such as image, text and audio, achieving significant performance in various domains, including multimodal…

Computation and Language · Computer Science 2025-06-03 Weiqi Feng , Yangrui Chen , Shaoyu Wang , Yanghua Peng , Haibin Lin , Minlan Yu