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Imitation learning from observation (LfO) is more preferable than imitation learning from demonstration (LfD) due to the nonnecessity of expert actions when reconstructing the expert policy from the expert data. However, previous studies…

Robotics · Computer Science 2020-10-19 Zhihao Cheng , Liu Liu , Aishan Liu , Hao Sun , Meng Fang , Dacheng Tao

Machine learning algorithms enable advanced decision making in contemporary intelligent systems. Research indicates that there is a tradeoff between their model performance and explainability. Machine learning models with higher performance…

Machine Learning · Computer Science 2022-06-23 Lukas-Valentin Herm , Kai Heinrich , Jonas Wanner , Christian Janiesch

It is often difficult to hand-specify what the correct reward function is for a task, so researchers have instead aimed to learn reward functions from human behavior or feedback. The types of behavior interpreted as evidence of the reward…

Machine Learning · Computer Science 2020-12-14 Hong Jun Jeon , Smitha Milli , Anca D. Dragan

Imitation learning through a demonstration interface is expected to learn policies for robot automation from intuitive human demonstrations. However, due to the differences in human and robot movement characteristics, a human expert might…

Robotics · Computer Science 2025-03-13 Kei Takahashi , Hikaru Sasaki , Takamitsu Matsubara

State of the art reinforcement learning has enabled training agents on tasks of ever increasing complexity. However, the current paradigm tends to favor training agents from scratch on every new task or on collections of tasks with a view…

Machine Learning · Computer Science 2023-02-09 Jacob Walker , Eszter Vértes , Yazhe Li , Gabriel Dulac-Arnold , Ankesh Anand , Théophane Weber , Jessica B. Hamrick

Behavioral cloning, or more broadly, learning from demonstrations (LfD) is a priomising direction for robot policy learning in complex scenarios. Albeit being straightforward to implement and data-efficient, behavioral cloning has its own…

Robotics · Computer Science 2024-05-27 Carl Qi , Edward Sun , Harry Zhang

Recent progress on vision-language foundation models have brought significant advancement to building general-purpose robots. By using the pre-trained models to encode the scene and instructions as inputs for decision making, the…

Machine Learning · Computer Science 2023-03-22 Yuying Ge , Annabella Macaluso , Li Erran Li , Ping Luo , Xiaolong Wang

In this paper, an image recognition algorithm based on the combination of deep learning and generative adversarial network (GAN) is studied, and compared with traditional image recognition methods. The purpose of this study is to evaluate…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 Yihao Zhong , Yijing Wei , Yingbin Liang , Xiqing Liu , Rongwei Ji , Yiru Cang

This paper proposes inverse feature learning as a novel supervised feature learning technique that learns a set of high-level features for classification based on an error representation approach. The key contribution of this method is to…

Machine Learning · Computer Science 2020-03-10 Behzad Ghazanfari , Fatemeh Afghah , MohammadTaghi Hajiaghayi

Complex planning and scheduling problems have long been solved using various optimization or heuristic approaches. In recent years, imitation learning that aims to learn from expert demonstrations has been proposed as a viable alternative…

Machine Learning · Computer Science 2024-05-24 Qian Shao , Pradeep Varakantham , Shih-Fen Cheng

Imitation learning is an effective approach for autonomous systems to acquire control policies when an explicit reward function is unavailable, using supervision provided as demonstrations from an expert, typically a human operator.…

Machine Learning · Computer Science 2018-06-20 YuXuan Liu , Abhishek Gupta , Pieter Abbeel , Sergey Levine

Agents that can learn to imitate given video observation -- \emph{without direct access to state or action information} are more applicable to learning in the natural world. However, formulating a reinforcement learning (RL) agent that…

Machine Learning · Computer Science 2023-07-14 Glen Berseth , Florian Golemo , Christopher Pal

Representation learning has been widely studied in the context of meta-learning, enabling rapid learning of new tasks through shared representations. Recent works such as MAML have explored using fine-tuning-based metrics, which measure the…

Machine Learning · Computer Science 2021-05-06 Kurtland Chua , Qi Lei , Jason D. Lee

Generative adversarial networks (GANs) are innovative techniques for learning generative models of complex data distributions from samples. Despite remarkable recent improvements in generating realistic images, one of their major…

Machine Learning · Computer Science 2018-11-05 Zinan Lin , Ashish Khetan , Giulia Fanti , Sewoong Oh

Ensuring long-term fairness is crucial when developing automated decision making systems, specifically in dynamic and sequential environments. By maximizing their reward without consideration of fairness, AI agents can introduce disparities…

Machine Learning · Computer Science 2025-01-03 Sahand Rezaei-Shoshtari , Hanna Yurchyk , Scott Fujimoto , Doina Precup , David Meger

Federated learning is gaining popularity as a distributed machine learning method that can be used to deploy AI-dependent IoT applications while protecting client data privacy and security. Due to the differences of clients, a single global…

Machine Learning · Computer Science 2022-02-21 Xingjian Cao , Gang Sun , Hongfang Yu , Mohsen Guizani

Human activity recognition (HAR) is an important research field in ubiquitous computing where the acquisition of large-scale labeled sensor data is tedious, labor-intensive and time consuming. State-of-the-art unsupervised remedies…

Machine Learning · Computer Science 2021-10-13 Alireza Abedin , Hamid Rezatofighi , Damith C. Ranasinghe

Traditional imitation learning provides a set of methods and algorithms to learn a reward function or policy from expert demonstrations. Learning from demonstration has been shown to be advantageous for navigation tasks as it allows for…

Robotics · Computer Science 2021-08-03 Christian Ellis , Maggie Wigness , John G. Rogers , Craig Lennon , Lance Fiondella

A basic, and still largely unanswered, question in the context of Generative Adversarial Networks (GANs) is whether they are truly able to capture all the fundamental characteristics of the distributions they are trained on. In particular,…

Machine Learning · Computer Science 2018-06-07 Shibani Santurkar , Ludwig Schmidt , Aleksander Mądry

Conventionally, supervised fine-tuning (SFT) is treated as a simple imitation learning process that only trains a policy to imitate expert behavior on demonstration datasets. In this work, we challenge this view by establishing a…

Machine Learning · Computer Science 2025-10-06 Jiangnan Li , Thuy-Trang Vu , Ehsan Abbasnejad , Gholamreza Haffari