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Offline Imitation Learning (IL) with imperfect demonstrations has garnered increasing attention owing to the scarcity of expert data in many real-world domains. A fundamental problem in this scenario is how to extract positive behaviors…

Machine Learning · Computer Science 2024-05-31 Sheng Yue , Jiani Liu , Xingyuan Hua , Ju Ren , Sen Lin , Junshan Zhang , Yaoxue Zhang

Imitation Learning (IL) aims to discover a policy by minimizing the discrepancy between the agent's behavior and expert demonstrations. However, IL is susceptible to limitations imposed by noisy demonstrations from non-expert behaviors,…

Machine Learning · Computer Science 2023-10-25 Ye Yuan , Xin Li , Yong Heng , Leiji Zhang , MingZhong Wang

Imitation learning (IL) enables agents to mimic expert behavior without reward signals but faces challenges in cross-domain scenarios with high-dimensional, noisy, and incomplete visual observations. To address this, we propose…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Minung Kim , Kawon Lee , Jungmo Kim , Sungho Choi , Seungyul Han

Imitation Learning (IL), also referred to as Learning from Demonstration (LfD), holds significant promise for capturing expert motor skills through efficient imitation, facilitating adept navigation of complex scenarios. A persistent…

Robotics · Computer Science 2024-04-01 Yingbai Hu , Fares J. Abu-Dakka , Fei Chen , Xiao Luo , Zheng Li , Alois Knoll , Weiping Ding

Modulation recognition is a fundamental task in communication systems as the accurate identification of modulation schemes is essential for reliable signal processing, interference mitigation for coexistent communication technologies, and…

Signal Processing · Electrical Eng. & Systems 2023-12-11 Ali Owfi , Ali Abbasi , Fatemeh Afghah , Jonathan Ashdown , Kurt Turck

Learning to perform tasks by leveraging a dataset of expert observations, also known as imitation learning from observations (ILO), is an important paradigm for learning skills without access to the expert reward function or the expert…

Machine Learning · Computer Science 2022-04-26 Tanmay Gangwani , Yuan Zhou , Jian Peng

Compared to traditional imitation learning methods such as DAgger and DART, intervention-based imitation offers a more convenient and sample efficient data collection process to users. In this paper, we introduce Reinforced…

Robotics · Computer Science 2022-03-30 Rom Parnichkun , Matthew N. Dailey , Atsushi Yamashita

In offline imitation learning (IL), an agent aims to learn an optimal expert behavior policy without additional online environment interactions. However, in many real-world scenarios, such as robotics manipulation, the offline dataset is…

Machine Learning · Computer Science 2024-01-01 Bowei He , Zexu Sun , Jinxin Liu , Shuai Zhang , Xu Chen , Chen Ma

Imitation learning (IL) is a popular paradigm for training policies in robotic systems when specifying the reward function is difficult. However, despite the success of IL algorithms, they impose the somewhat unrealistic requirement that…

Machine Learning · Computer Science 2022-02-16 Luca Viano , Yu-Ting Huang , Parameswaran Kamalaruban , Craig Innes , Subramanian Ramamoorthy , Adrian Weller

In this paper, we focus on single-demonstration imitation learning (IL), a practical approach for real-world applications where acquiring multiple expert demonstrations is costly or infeasible and the ground truth reward function is not…

Machine Learning · Computer Science 2024-07-09 Chia-Cheng Chiang , Li-Cheng Lan , Wei-Fang Sun , Chien Feng , Cho-Jui Hsieh , Chun-Yi Lee

Researchers have demonstrated state-of-the-art performance in sequential decision making problems (e.g., robotics control, sequential prediction) with deep neural network models. One often has access to near-optimal oracles that achieve…

Machine Learning · Computer Science 2017-03-06 Wen Sun , Arun Venkatraman , Geoffrey J. Gordon , Byron Boots , J. Andrew Bagnell

The aim in imitation learning is to learn effective policies by utilizing near-optimal expert demonstrations. However, high-quality demonstrations from human experts can be expensive to obtain in large numbers. On the other hand, it is…

Machine Learning · Computer Science 2021-10-29 Mengjiao Yang , Sergey Levine , Ofir Nachum

Imitation learning (IL) provides a data-driven framework for approximating policies for large-scale combinatorial optimisation problems formulated as sequential decision problems (SDPs), where exact solution methods are computationally…

Machine Learning · Computer Science 2026-04-13 Prakash Gawas , Antoine Legrain , Louis-Martin Rousseau

Although reinforcement learning methods offer a powerful framework for automatic skill acquisition, for practical learning-based control problems in domains such as robotics, imitation learning often provides a more convenient and…

Artificial Intelligence · Computer Science 2024-03-20 Jianlan Luo , Perry Dong , Yuexiang Zhai , Yi Ma , Sergey Levine

We introduce Iterative Dual Reinforcement Learning (IDRL), a new method that takes an optimal discriminator-weighted imitation view of solving RL. Our method is motivated by a simple experiment in which we find training a discriminator…

Machine Learning · Computer Science 2025-04-21 Haoran Xu , Shuozhe Li , Harshit Sikchi , Scott Niekum , Amy Zhang

Adversarial Imitation Learning (AIL) is a dominant framework in imitation learning that infers rewards from expert demonstrations to guide policy optimization. Although providing more expert demonstrations typically leads to improved…

Machine Learning · Computer Science 2026-04-30 Pengcheng Li , Qiang Fang , Tong Zhao , Yixing Lan , Xin Xu

Compared to reinforcement learning, imitation learning (IL) is a powerful paradigm for training agents to learn control policies efficiently from expert demonstrations. However, in most cases, obtaining demonstration data is costly and…

Machine Learning · Computer Science 2019-03-20 Naijun Liu , Tao Lu , Yinghao Cai , Boyao Li , Shuo Wang

Existing imitation learning works mainly assume that the demonstrator who collects demonstrations shares the same dynamics as the imitator. However, the assumption limits the usage of imitation learning, especially when collecting…

Robotics · Computer Science 2022-11-15 Yiwen Qiu , Jialong Wu , Zhangjie Cao , Mingsheng Long

Imitation learning (IL) has proven effective for enabling robots to acquire visuomotor skills through expert demonstrations. However, traditional IL methods are limited by their reliance on high-quality, often scarce, expert data, and…

Robotics · Computer Science 2025-09-05 Shuze Wang , Yunpeng Mei , Hongjie Cao , Yetian Yuan , Gang Wang , Jian Sun , Jie Chen

Imitation Learning (IL) techniques aim to replicate human behaviors in specific tasks. While IL has gained prominence due to its effectiveness and efficiency, traditional methods often focus on datasets collected from experts to produce a…

Machine Learning · Computer Science 2025-04-28 Mathieu Petitbois , Rémy Portelas , Sylvain Lamprier , Ludovic Denoyer