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Domain adaptation algorithms are useful when the distributions of the training and the test data are different. In this paper, we focus on the problem of instrumental variation and time-varying drift in the field of sensors and measurement,…

Computer Vision and Pattern Recognition · Computer Science 2017-06-23 Ke Yan , Lu Kou , David Zhang

It is significantly challenging to recognize daily human actions in homes due to the diversity and dynamic changes in unconstrained home environments. It spurs the need to continually adapt to various users and scenes. Fine-tuning current…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Yuanda Hu , Xing Liu , Meiying Li , Yate Ge , Xiaohua Sun , Weiwei Guo

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

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

Cross-domain imitation learning (CDIL) accelerates policy learning by transferring expert knowledge across domains, which is valuable in applications where the collection of expert data is costly. Existing methods are either supervised,…

Machine Learning · Computer Science 2026-02-12 Li-Min Chu , Kai-Siang Ma , Ming-Hong Chen , Ping-Chun Hsieh

We present the ADaptive Adversarial Imitation Learning (ADAIL) algorithm for learning adaptive policies that can be transferred between environments of varying dynamics, by imitating a small number of demonstrations collected from a single…

Machine Learning · Computer Science 2020-08-31 Yiren Lu , Jonathan Tompson

Prior work in multi-task learning has mainly focused on predictions on a single image. In this work, we present a new approach for multi-task learning from videos via efficient inter-frame local attention (MILA). Our approach contains a…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Donghyun Kim , Tian Lan , Chuhang Zou , Ning Xu , Bryan A. Plummer , Stan Sclaroff , Jayan Eledath , Gerard Medioni

The goal of imitation learning (IL) is to learn a good policy from high-quality demonstrations. However, the quality of demonstrations in reality can be diverse, since it is easier and cheaper to collect demonstrations from a mix of experts…

Machine Learning · Computer Science 2019-09-17 Voot Tangkaratt , Bo Han , Mohammad Emtiyaz Khan , Masashi Sugiyama

Imitation learning is well-suited for robotic tasks where it is difficult to directly program the behavior or specify a cost for optimal control. In this work, we propose a method for learning the reward function (and the corresponding…

Machine Learning · Computer Science 2021-01-01 Tianwei Ni , Harshit Sikchi , Yufei Wang , Tejus Gupta , Lisa Lee , Benjamin Eysenbach

In offline Imitation Learning (IL), one of the main challenges is the \textit{covariate shift} between the expert observations and the actual distribution encountered by the agent, because it is difficult to determine what action an agent…

Machine Learning · Computer Science 2024-06-19 Jie-Jing Shao , Hao-Sen Shi , Lan-Zhe Guo , Yu-Feng Li

Learning from observation (LfO) aims to imitate experts by learning from state-only demonstrations without requiring action labels. Existing adversarial imitation learning approaches learn a generator agent policy to produce state…

Machine Learning · Computer Science 2024-10-10 Bo-Ruei Huang , Chun-Kai Yang , Chun-Mao Lai , Dai-Jie Wu , Shao-Hua Sun

Class Incremental Learning (CIL) is challenging due to catastrophic forgetting. On top of that, Exemplar-free Class Incremental Learning is even more challenging due to forbidden access to previous task data. Recent exemplar-free CIL…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Zichong Meng , Jie Zhang , Changdi Yang , Zheng Zhan , Pu Zhao , Yanzhi Wang

Imitation Learning from Observation (ILfO) is a setting in which a learner tries to imitate the behavior of an expert, using only observational data and without the direct guidance of demonstrated actions. In this paper, we re-examine…

Robotics · Computer Science 2024-10-07 Wei-Di Chang , Scott Fujimoto , David Meger , Gregory Dudek

Domain generalization (DG) for person re-identification (ReID) is a challenging problem, as access to target domain data is not permitted during the training process. Most existing DG ReID methods update the feature extractor and classifier…

Computer Vision and Pattern Recognition · Computer Science 2023-06-09 Wentao Tan , Changxing Ding , Pengfei Wang , Mingming Gong , Kui Jia

Demonstrations are an effective alternative to task specification for learning agents in settings where designing a reward function is difficult. However, demonstrating expert behavior in the action space of the agent becomes unwieldy when…

Machine Learning · Computer Science 2024-09-23 Harshit Sikchi , Caleb Chuck , Amy Zhang , Scott Niekum

Adversarial Imitation Learning (AIL) allows the agent to reproduce expert behavior with low-dimensional states and actions. However, challenges arise in handling visual states due to their less distinguishable representation compared to…

Machine Learning · Computer Science 2024-01-23 Yunke Wang , Linwei Tao , Bo Du , Yutian Lin , Chang Xu

Model-free deep reinforcement learning (RL) has demonstrated its superiority on many complex sequential decision-making problems. However, heavy dependence on dense rewards and high sample-complexity impedes the wide adoption of these…

Machine Learning · Computer Science 2020-04-02 Zhuangdi Zhu , Kaixiang Lin , Bo Dai , Jiayu Zhou

Wearable sensor-based human activity recognition (HAR) has been a research focus in the field of ubiquitous and mobile computing for years. In recent years, many deep models have been applied to HAR problems. However, deep learning methods…

Signal Processing · Electrical Eng. & Systems 2020-12-16 Yujiao Hao , Boyu Wang , Rong Zheng

Unsupervised domain adaptation for object detection is a challenging problem with many real-world applications. Unfortunately, it has received much less attention than supervised object detection. Models that try to address this task tend…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Hongsong Wang , Shengcai Liao , Ling Shao

Imitation learning (IL) aims to learn a policy from expert demonstrations that minimizes the discrepancy between the learner and expert behaviors. Various imitation learning algorithms have been proposed with different pre-determined…

Machine Learning · Computer Science 2020-11-20 Xin Zhang , Yanhua Li , Ziming Zhang , Zhi-Li Zhang