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Reinforcement learning (RL) has emerged as a powerful paradigm for improving large language models beyond supervised fine-tuning, yet sustaining performance gains at scale remains an open challenge, as data diversity and structure, rather…

机器学习 · 计算机科学 2026-03-26 Cansu Sancaktar , David Zhang , Gabriel Synnaeve , Taco Cohen

Given the high cost of collecting robotic data in the real world, sample efficiency is a consistently compelling pursuit in robotics. In this paper, we introduce SGRv2, an imitation learning framework that enhances sample efficiency through…

机器人学 · 计算机科学 2024-09-27 Tong Zhang , Yingdong Hu , Jiacheng You , Yang Gao

Sample efficiency in Reinforcement Learning (RL) has traditionally been driven by algorithmic enhancements. In this work, we demonstrate that scaling can also lead to substantial improvements. We conduct a thorough investigation into the…

机器学习 · 计算机科学 2024-12-04 Michal Nauman , Mateusz Ostaszewski , Krzysztof Jankowski , Piotr Miłoś , Marek Cygan

Recent reinforcement learning approaches have shown surprisingly strong capabilities of bang-bang policies for solving continuous control benchmarks. The underlying coarse action space discretizations often yield favourable exploration…

机器学习 · 计算机科学 2024-04-08 Tim Seyde , Peter Werner , Wilko Schwarting , Markus Wulfmeier , Daniela Rus

Deep reinforcement learning (DRL) has significantly advanced the field of combinatorial optimization (CO). However, its practicality is hindered by the necessity for a large number of reward evaluations, especially in scenarios involving…

机器学习 · 计算机科学 2024-07-18 Hyeonah Kim , Minsu Kim , Sungsoo Ahn , Jinkyoo Park

Recent advancements in off-policy Reinforcement Learning (RL) have significantly improved sample efficiency, primarily due to the incorporation of various forms of regularization that enable more gradient update steps than traditional…

Deep reinforcement learning (RL) has achieved great empirical successes in various domains. However, the large search space of neural networks requires a large amount of data, which makes the current RL algorithms not sample efficient.…

机器学习 · 计算机科学 2020-08-18 Qianli Shen , Yan Li , Haoming Jiang , Zhaoran Wang , Tuo Zhao

The goal of the Inverse reinforcement learning (IRL) task is to identify the underlying reward function and the corresponding optimal policy from a set of expert demonstrations. While most IRL algorithms' theoretical guarantees rely on a…

机器学习 · 统计学 2025-03-25 Ruijia Zhang , Siliang Zeng , Chenliang Li , Alfredo Garcia , Mingyi Hong

StarCraft II (SC2) poses a grand challenge for reinforcement learning (RL), of which the main difficulties include huge state space, varying action space, and a long time horizon. In this work, we investigate a set of RL techniques for the…

机器学习 · 计算机科学 2022-10-05 Ruo-Ze Liu , Zhen-Jia Pang , Zhou-Yu Meng , Wenhai Wang , Yang Yu , Tong Lu

Large language models are increasingly used for complex reasoning tasks where high-quality offline data such as expert-annotated solutions and distilled reasoning traces are often available. However, in environments with sparse rewards,…

人工智能 · 计算机科学 2025-08-11 Yihao Liu , Shuocheng Li , Lang Cao , Yuhang Xie , Mengyu Zhou , Haoyu Dong , Xiaojun Ma , Shi Han , Dongmei Zhang

Reinforcement learning (RL) excels in applications such as video games, but ensuring safety as well as the ability to achieve the specified goals remains challenging when using RL for real-world problems, such as human-aligned tasks where…

机器学习 · 计算机科学 2024-05-21 Liqun Zhao , Keyan Miao , Konstantinos Gatsis , Antonis Papachristodoulou

This paper presents a benchmarking study of some of the state-of-the-art reinforcement learning algorithms used for solving two simulated vision-based robotics problems. The algorithms considered in this study include soft actor-critic…

机器人学 · 计算机科学 2022-01-13 Swagat Kumar , Hayden Sampson , Ardhendu Behera

Recurrent models are a popular choice for video enhancement tasks such as video denoising or super-resolution. In this work, we focus on their stability as dynamical systems and show that they tend to fail catastrophically at inference time…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Thomas Tanay , Aivar Sootla , Matteo Maggioni , Puneet K. Dokania , Philip Torr , Ales Leonardis , Gregory Slabaugh

Reinforcement Learning (RL) trains agents to learn optimal behavior by maximizing reward signals from experience datasets. However, RL training often faces memory limitations, leading to execution latencies and prolonged training times. To…

Due to the over-parameterization nature, neural networks are a powerful tool for nonlinear function approximation. In order to achieve good generalization on unseen data, a suitable inductive bias is of great importance for neural networks.…

机器学习 · 计算机科学 2021-11-17 Weiyang Liu , Rongmei Lin , Zhen Liu , Li Xiong , Bernhard Schölkopf , Adrian Weller

The present paper proposes a novel reinforcement learning method with world models, DreamingV2, a collaborative extension of DreamerV2 and Dreaming. DreamerV2 is a cutting-edge model-based reinforcement learning from pixels that uses…

机器学习 · 计算机科学 2022-03-02 Masashi Okada , Tadahiro Taniguchi

Learning whole-body mobile manipulation via imitation is essential for generalizing robotic skills to diverse environments and complex tasks. However, this goal is hindered by significant challenges, particularly in effectively processing…

机器人学 · 计算机科学 2025-09-29 Yue Su , Chubin Zhang , Sijin Chen , Liufan Tan , Yansong Tang , Jianan Wang , Xihui Liu

Reinforcement learning (RL) has emerged as a promising paradigm in complex and continuous robotic tasks, however, safe exploration has been one of the main challenges, especially in contact-rich manipulation tasks in unstructured…

机器人学 · 计算机科学 2024-06-21 Heng Zhang , Gokhan Solak , Gustavo J. G. Lahr , Arash Ajoudani

Recent advances in deep Reinforcement Learning (RL) have created unprecedented opportunities for intelligent automation, where a machine can autonomously learn an optimal policy for performing a given task. However, current deep RL…

机器学习 · 计算机科学 2021-05-27 Zohreh Raziei , Mohsen Moghaddam

Attention-based sequential recommendation methods have shown promise in accurately capturing users' evolving interests from their past interactions. Recent research has also explored the integration of reinforcement learning (RL) into these…

机器学习 · 计算机科学 2024-04-19 Melissa Mozifian , Tristan Sylvain , Dave Evans , Lili Meng