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Large language models (LLMs) can acquire new capabilities through fine-tuning, but continual adaptation often leads to catastrophic forgetting. We propose CRAFT, a continual learning framework that avoids updating model weights by instead…

Machine Learning · Computer Science 2026-05-11 Md Anwar Hossen , Fatema Siddika , Juan Pablo Munoz , Tanya Roosta , Ali Jannesari

In this paper, we present a deep reinforcement learning (RL) framework for iterative dialog policy optimization in end-to-end task-oriented dialog systems. Popular approaches in learning dialog policy with RL include letting a dialog agent…

Computation and Language · Computer Science 2017-09-20 Bing Liu , Ian Lane

Reinforcement learning (RL) is a framework to optimize a control policy using rewards that are revealed by the system as a response to a control action. In its standard form, RL involves a single agent that uses its policy to accomplish a…

Systems and Control · Electrical Eng. & Systems 2021-11-24 Juan Cervino , Juan Andres Bazerque , Miguel Calvo-Fullana , Alejandro Ribeiro

Longitudinal low-dose CT follow-ups vary in noise, reconstruction kernels, and registration quality. These differences destabilize subtraction images and can trigger false new lesion alarms. We present TopoGate, a lightweight model that…

Image and Video Processing · Electrical Eng. & Systems 2026-02-23 Seungik Cho

Generating complex, logically-sound SPARQL queries for multi-hop questions remains a critical bottleneck for Knowledge Graph Question Answering, as the brittle nature of one-shot generation by Large Language Models (LLMs) hinders reliable…

Artificial Intelligence · Computer Science 2025-11-18 Floris Vossebeld , Shenghui Wang

Vision-Language-Action (VLA) models process visual inputs independently at each timestep, discarding valuable temporal information inherent in robotic manipulation tasks. This frame-by-frame processing makes models vulnerable to visual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Chenghao Liu , Jiachen Zhang , Chengxuan Li , Zhimu Zhou , Shixin Wu , Songfang Huang , Huiling Duan

End-to-end training of multi-agent systems offers significant advantages in improving multi-task performance. However, training such models remains challenging and requires extensive manual design and monitoring. In this work, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Zewei Zhou , Seth Z. Zhao , Tianhui Cai , Zhiyu Huang , Bolei Zhou , Jiaqi Ma

Autonomous agents powered by large language models (LLMs) have the potential to enhance human capabilities, assisting with digital tasks from sending emails to performing data analysis. The abilities of existing LLMs at such tasks are often…

Machine Learning · Computer Science 2025-01-22 Hongjin Su , Ruoxi Sun , Jinsung Yoon , Pengcheng Yin , Tao Yu , Sercan Ö. Arık

We introduce Talk2Move, a reinforcement learning (RL) based diffusion framework for text-instructed spatial transformation of objects within scenes. Spatially manipulating objects in a scene through natural language poses a challenge for…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Jing Tan , Zhaoyang Zhang , Yantao Shen , Jiarui Cai , Shuo Yang , Jiajun Wu , Wei Xia , Zhuowen Tu , Stefano Soatto

A multi-turn dialogue always follows a specific topic thread, and topic shift at the discourse level occurs naturally as the conversation progresses, necessitating the model's ability to capture different topics and generate topic-aware…

Computation and Language · Computer Science 2021-09-14 Hongru Wang , Mingyu Cui , Zimo Zhou , Gabriel Pui Cheong Fung , Kam-Fai Wong

We examine the problem of joint top-down active search of multiple objects under interaction, e.g., person riding a bicycle, cups held by the table, etc.. Such objects under interaction often can provide contextual cues to each other to…

Computer Vision and Pattern Recognition · Computer Science 2017-02-21 Xiangyu Kong , Bo Xin , Yizhou Wang , Gang Hua

Reinforcement learning (RL) is a powerful approach to enhance task-oriented dialogue (TOD) systems. However, existing RL methods tend to mainly focus on generation tasks, such as dialogue policy learning (DPL) or response generation (RG),…

Artificial Intelligence · Computer Science 2024-06-21 Huifang Du , Shuqin Li , Minghao Wu , Xuejing Feng , Yuan-Fang Li , Haofen Wang

Pre-trained Vision-Language-Action (VLA) models represent a major leap towards general-purpose robots, yet efficiently adapting them to novel, specific tasks in-situ remains a significant hurdle. While reinforcement learning (RL) is a…

Robotics · Computer Science 2026-04-10 Baicheng Li , Dong Wu , Zike Yan , Xinchen Liu , Lusong Li , Zecui Zeng , Hongbin Zha

In human-robot collaboration (HRC), robots must adapt online to dynamic task constraints and evolving human intent. While physical corrections provide a natural, low-latency channel for operators to convey motion-level adjustments,…

Robotics · Computer Science 2026-03-13 Jiurun Song , Xiao Liang , Minghui Zheng

Optimizing communication topology is fundamental to the efficiency and effectiveness of Large Language Model (LLM)-based Multi-Agent Systems (MAS). While recent approaches utilize reinforcement learning to dynamically construct…

Computation and Language · Computer Science 2026-03-04 Yueyang Cang , Xiaoteng Zhang , Erlu Zhao , Zehua Ji , Yuhang Liu , Yuchen He , Zhiyuan Ning , Chen Yijun , Wenge Que , Li Shi

Reinforcement Learning (RL) has achieved significant success in solving single-goal tasks. However, uniform goal selection often results in sample inefficiency in multi-goal settings where agents must learn a universal goal-conditioned…

Machine Learning · Computer Science 2025-12-30 Gaurav Chaudhary , Laxmidhar Behera

Large language models (LLMs) have demonstrated remarkable capabilities in tool learning. In real-world scenarios, user queries are often ambiguous and incomplete, requiring effective clarification. However, existing interactive…

Computation and Language · Computer Science 2025-06-12 Xuan Zhang , Yongliang Shen , Zhe Zheng , Linjuan Wu , Wenqi Zhang , Yuchen Yan , Qiuying Peng , Jun Wang , Weiming Lu

Modeling the interactions among agents for trajectory prediction of autonomous driving has been challenging due to the inherent uncertainty in agents' behavior. The interactions involved in the predicted trajectories of agents, also called…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Ziyi Huang , Yang Li , Dushuai Li , Yao Mu , Hongmao Qin , Nan Zheng

Trajectory optimization in multi-vehicle scenarios faces challenges due to its non-linear, non-convex properties and sensitivity to initial values, making interactions between vehicles difficult to control. In this paper, inspired by…

Robotics · Computer Science 2025-03-10 Changjia Ma , Yi Zhao , Zhongxue Gan , Bingzhao Gao , Wenchao Ding

Tool use is essential for enabling robots to perform complex real-world tasks, but learning such skills requires extensive datasets. While teleoperation is widely used, it is slow, delay-sensitive, and poorly suited for dynamic tasks. In…

Robotics · Computer Science 2025-09-16 Haonan Chen , Cheng Zhu , Shuijing Liu , Yunzhu Li , Katherine Driggs-Campbell