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This short paper describes our proposed solution for the third edition of the "AI Olympics with RealAIGym" competition, held at ICRA 2025. We employed Monte-Carlo Probabilistic Inference for Learning Control (MC-PILCO), an MBRL algorithm…

机器人学 · 计算机科学 2025-04-10 Niccolò Turcato , Marco Calì , Alberto Dalla Libera , Giulio Giacomuzzo , Ruggero Carli , Diego Romeres

High-dimensional observations and complex real-world dynamics present major challenges in reinforcement learning for both function approximation and exploration. We address both of these challenges with two complementary techniques: First,…

人工智能 · 计算机科学 2016-03-15 David Abel , Alekh Agarwal , Fernando Diaz , Akshay Krishnamurthy , Robert E. Schapire

The problem of sparse rewards is one of the hardest challenges in contemporary reinforcement learning. Hierarchical reinforcement learning (HRL) tackles this problem by using a set of temporally-extended actions, or options, each of which…

机器学习 · 计算机科学 2020-01-14 Nat Dilokthanakul , Christos Kaplanis , Nick Pawlowski , Murray Shanahan

Exploration in environments with sparse rewards has been a persistent problem in reinforcement learning (RL). Many tasks are natural to specify with a sparse reward, and manually shaping a reward function can result in suboptimal…

机器学习 · 计算机科学 2018-02-27 Ashvin Nair , Bob McGrew , Marcin Andrychowicz , Wojciech Zaremba , Pieter Abbeel

Long-horizon embodied intelligence requires agents to improve through interaction, not merely to execute plans generated from static goals. A central challenge is therefore to transform past executions into knowledge that can shape future…

人工智能 · 计算机科学 2026-05-12 Zhengwei Xie , Zhisheng Chen , Ziyan Weng , Jinhan Li , Chenglong Li , Zikai Xiao , Jingwei Song , Jinhao Jing , Vireo Zhang , Kun Wang

Hierarchical reinforcement learning (HRL) is a promising approach to extend traditional reinforcement learning (RL) methods to solve more complex tasks. Yet, the majority of current HRL methods require careful task-specific design and…

机器学习 · 计算机科学 2018-10-08 Ofir Nachum , Shixiang Gu , Honglak Lee , Sergey Levine

The MineRL competition is designed for the development of reinforcement learning and imitation learning algorithms that can efficiently leverage human demonstrations to drastically reduce the number of environment interactions needed to…

机器学习 · 计算机科学 2021-11-18 Hangyu Mao , Chao Wang , Xiaotian Hao , Yihuan Mao , Yiming Lu , Chengjie Wu , Jianye Hao , Dong Li , Pingzhong Tang

Meta-reinforcement learning (RL) addresses the problem of sample inefficiency in deep RL by using experience obtained in past tasks for a new task to be solved. However, most meta-RL methods require partially or fully on-policy data, i.e.,…

人工智能 · 计算机科学 2021-01-07 Takahisa Imagawa , Takuya Hiraoka , Yoshimasa Tsuruoka

Meta-Reinforcement Learning (MRL) is a promising framework for training agents that can quickly adapt to new environments and tasks. In this work, we study the MRL problem under the policy gradient formulation, where we propose a novel…

机器学习 · 计算机科学 2023-05-23 Mohammad Taha Toghani , Sebastian Perez-Salazar , César A. Uribe

Many real-world applications can be formulated as multi-agent cooperation problems, such as network packet routing and coordination of autonomous vehicles. The emergence of deep reinforcement learning (DRL) provides a promising approach for…

多智能体系统 · 计算机科学 2022-06-28 Zhixuan Liang , Jiannong Cao , Shan Jiang , Divya Saxena , Huafeng Xu

Hindsight Experience Replay (HER) is widely regarded as the state-of-the-art algorithm for achieving sample-efficient multi-goal reinforcement learning (RL) in robotic manipulation tasks with binary rewards. HER facilitates learning from…

机器人学 · 计算机科学 2025-04-16 Fikrican Özgür , René Zurbrügg , Suryansh Kumar

We describe a method to use discrete human feedback to enhance the performance of deep learning agents in virtual three-dimensional environments by extending deep-reinforcement learning to model the confidence and consistency of human…

人工智能 · 计算机科学 2021-06-24 Zhiyu Lin , Brent Harrison , Aaron Keech , Mark O. Riedl

We introduce a sampling perspective to tackle the challenging task of training robust Reinforcement Learning (RL) agents. Leveraging the powerful Stochastic Gradient Langevin Dynamics, we present a novel, scalable two-player RL algorithm,…

机器学习 · 计算机科学 2020-11-09 Parameswaran Kamalaruban , Yu-Ting Huang , Ya-Ping Hsieh , Paul Rolland , Cheng Shi , Volkan Cevher

Hierarchical Reinforcement Learning (HRL) is well-suitedd for solving complex tasks by breaking them down into structured policies. However, HRL agents often struggle with efficient exploration and quick adaptation. To overcome these…

机器学习 · 计算机科学 2025-03-18 Arash Khajooeinejad , Fatemeh Sadat Masoumi , Masoumeh Chapariniya

Decision-making in complex, continuous multi-task environments is often hindered by the difficulty of obtaining accurate models for planning and the inefficiency of learning purely from trial and error. While precise environment dynamics…

机器学习 · 计算机科学 2025-03-20 Jeff Jewett , Sandhya Saisubramanian

Complex high-dimensional spaces with high Degree-of-Freedom and complicated action spaces, such as humanoid robots equipped with dexterous hands, pose significant challenges for reinforcement learning (RL) algorithms, which need to wisely…

机器人学 · 计算机科学 2025-02-25 Zifeng Zhuang , Diyuan Shi , Runze Suo , Xiao He , Hongyin Zhang , Ting Wang , Shangke Lyu , Donglin Wang

Hierarchical reinforcement learning (HRL) improves the efficiency of long-horizon reinforcement-learning tasks with sparse rewards by decomposing the task into a hierarchy of subgoals. The main challenge of HRL is efficient discovery of the…

机器学习 · 计算机科学 2025-07-08 Sadegh Khorasani , Saber Salehkaleybar , Negar Kiyavash , Matthias Grossglauser

Large-scale autoregressive models pretrained on next-token prediction and finetuned with reinforcement learning (RL) have achieved unprecedented success on many problem domains. During RL, these models explore by generating new outputs, one…

Model Predictive Control (MPC) and Reinforcement Learning (RL) are two prominent strategies for controlling legged robots, each with unique strengths. RL learns control policies through system interaction, adapting to various scenarios,…

机器人学 · 计算机科学 2025-01-29 Shivayogi Akki , Tan Chen

Cheung and Piliouras (2020) recently showed that two variants of the Multiplicative Weights Update method - OMWU and MWU - display opposite convergence properties depending on whether the game is zero-sum or cooperative. Inspired by this…

计算机科学与博弈论 · 计算机科学 2022-06-14 Nelson Vadori , Rahul Savani , Thomas Spooner , Sumitra Ganesh