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Most reinforcement learning (RL) methods focus on learning optimal policies over low-level action spaces. While these methods can perform well in their training environments, they lack the flexibility to transfer to new tasks. Instead, RL…

Robotics · Computer Science 2024-09-20 Jesse Zhang , Minho Heo , Zuxin Liu , Erdem Biyik , Joseph J Lim , Yao Liu , Rasool Fakoor

Reinforcement Learning (RL) for training Large Language Models is notoriously unstable. While recent studies attribute this to "training inference mismatch stemming" from inconsistent hybrid engines, standard remedies, such as Importance…

Machine Learning · Computer Science 2026-02-03 Yaxiang Zhang , Yingru Li , Jiacai Liu , Jiawei Xu , Ziniu Li , Qian Liu , Haoyuan Li

Reinforcement Learning (RL), a subfield of Artificial Intelligence (AI), focuses on training agents to make decisions by interacting with their environment to maximize cumulative rewards. This paper provides an overview of RL, covering its…

Artificial Intelligence · Computer Science 2024-12-04 Majid Ghasemi , Dariush Ebrahimi

A major challenge in real-world reinforcement learning (RL) is the sparsity of reward feedback. Often, what is available is an intuitive but sparse reward function that only indicates whether the task is completed partially or fully.…

Machine Learning · Computer Science 2022-02-15 Desik Rengarajan , Gargi Vaidya , Akshay Sarvesh , Dileep Kalathil , Srinivas Shakkottai

Reinforcement learning (RL) has emerged as a powerful paradigm for fine-tuning Large Language Models (LLMs) for text generation. In particular, recent LLMs such as ChatGPT and GPT-4 can engage in fluent conversations with users after…

Machine Learning · Computer Science 2023-11-14 Jonathan D. Chang , Kiante Brantley , Rajkumar Ramamurthy , Dipendra Misra , Wen Sun

Reinforcement Learning (RL) has shown remarkable abilities in learning policies for decision-making tasks. However, RL is often hindered by issues such as low sample efficiency, lack of interpretability, and sparse supervision signals. To…

Computation and Language · Computer Science 2024-02-16 Xidong Feng , Ziyu Wan , Mengyue Yang , Ziyan Wang , Girish A. Koushik , Yali Du , Ying Wen , Jun Wang

Deep reinforcement learning (deep RL) has been successful in learning sophisticated behaviors automatically; however, the learning process requires a huge number of trials. In contrast, animals can learn new tasks in just a few trials,…

Artificial Intelligence · Computer Science 2016-11-11 Yan Duan , John Schulman , Xi Chen , Peter L. Bartlett , Ilya Sutskever , Pieter Abbeel

Fine-tuning foundation models has emerged as a powerful approach for generating objects with specific desired properties. Reinforcement learning (RL) provides an effective framework for this purpose, enabling models to generate outputs that…

Machine Learning · Computer Science 2025-11-04 Pouya M. Ghari , Simone Sciabola , Ye Wang

In this paper, we study the outage minimization problem in a decode-and-forward cooperative network with relay uncertainty. To reduce the outage probability and improve the quality of service, existing researches usually rely on the…

Information Theory · Computer Science 2022-05-19 Yuanzhe Geng , Erwu Liu , Rui Wang , Pengcheng Sun , Binyu Lu

Recommender systems (RecSys) have become critical tools for enhancing user engagement by delivering personalized content across diverse digital platforms. Recent advancements in large language models (LLMs) demonstrate significant potential…

Information Retrieval · Computer Science 2025-10-16 Yi Zhang , Lili Xie , Ruihong Qiu , Jiajun Liu , Sen Wang

Reinforcement learning (RL) is a goal-oriented learning solution that has proven to be successful for Neural Architecture Search (NAS) on the CIFAR and ImageNet datasets. However, a limitation of this approach is its high computational…

Neural and Evolutionary Computing · Computer Science 2019-12-04 J. Gomez Robles , J. Vanschoren

We investigate reinforcement learning (RL) in the presence of distributional mismatch between training and deployment, where policies trained in simulators often underperform in practice due to mismatches between training and deployment…

Machine Learning · Computer Science 2025-11-12 Debamita Ghosh , George K. Atia , Yue Wang

In reinforcement learning (RL), there are two major settings for interacting with the environment: online and offline. Online methods explore the environment at significant time cost, and offline methods efficiently obtain reward signals by…

Machine Learning · Computer Science 2023-06-19 Changyu Chen , Xiting Wang , Yiqiao Jin , Victor Ye Dong , Li Dong , Jie Cao , Yi Liu , Rui Yan

Efficiently reranking documents retrieved from information retrieval (IR) pipelines to enhance overall quality of Retrieval-Augmented Generation (RAG) system remains an important yet challenging problem. Recent studies have highlighted the…

Computation and Language · Computer Science 2025-11-12 Jingyu Wu , Aditya Shrivastava , Jing Zhu , Alfy Samuel , Anoop Kumar , Daben Liu

Existing Large Reasoning Models (LRMs) have shown the potential of reinforcement learning (RL) to enhance the complex reasoning capabilities of Large Language Models~(LLMs). While they achieve remarkable performance on challenging tasks…

Artificial Intelligence · Computer Science 2025-03-19 Huatong Song , Jinhao Jiang , Yingqian Min , Jie Chen , Zhipeng Chen , Wayne Xin Zhao , Lei Fang , Ji-Rong Wen

Precise robot manipulation is critical for fine-grained applications such as chemical and biological experiments, where even small errors (e.g., reagent spillage) can invalidate an entire task. Existing approaches often rely on…

Robotics · Computer Science 2026-02-13 Xiangyu Chen , Chuhao Zhou , Yuxi Liu , Jianfei Yang

Large language models (LLMs) possess strong multilingual capabilities, and combining Reinforcement Learning from Human Feedback (RLHF) with translation tasks has shown great potential. However, we observe that this paradigm performs…

Computation and Language · Computer Science 2025-08-06 Tianjiao Li , Mengran Yu , Chenyu Shi , Yanjun Zhao , Xiaojing Liu , Qiang Zhang , Qi Zhang , Xuanjing Huang , Jiayin Wang

The past decade has seen the rapid development of Reinforcement Learning, which acquires impressive performance with numerous training resources. However, one of the greatest challenges in RL is generalization efficiency (i.e.,…

Machine Learning · Computer Science 2021-08-18 Qi Yang , Peng Yang , Ke Tang

Reinforcement learning (RL) is a class of artificial intelligence algorithms being used to design adaptive optimal controllers through online learning. This paper presents a model-free, real-time, data-efficient Q-learning-based algorithm…

Systems and Control · Electrical Eng. & Systems 2023-10-11 Ali Aalipour , Alireza Khani

Resource allocation plays a critical role in minimizing cycle time and improving the efficiency of business processes. Recently, Deep Reinforcement Learning (DRL) has emerged as a powerful technique to optimize resource allocation policies…

Machine Learning · Computer Science 2025-09-03 Jeroen Middelhuis , Zaharah Bukhsh , Ivo Adan , Remco Dijkman