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A significant challenge for the practical application of reinforcement learning in the real world is the need to specify an oracle reward function that correctly defines a task. Inverse reinforcement learning (IRL) seeks to avoid this…

Machine Learning · Computer Science 2019-10-16 Kelvin Xu , Ellis Ratner , Anca Dragan , Sergey Levine , Chelsea Finn

We present a novel method for learning from demonstration 6-D tasks that can be modeled as a sequence of linear motions and compliances. The focus of this paper is the learning of a single linear primitive, many of which can be sequenced to…

Robotics · Computer Science 2021-03-15 Markku Suomalainen , Fares J. Abu-Dakka , Ville Kyrki

Model-based reinforcement learning (MBRL) aims to learn a dynamic model to reduce the number of interactions with real-world environments. However, due to estimation error, rollouts in the learned model, especially those of long horizons,…

Machine Learning · Computer Science 2020-03-17 Yueh-Hua Wu , Ting-Han Fan , Peter J. Ramadge , Hao Su

A fundamental notion of distance between train and test distributions from the field of domain adaptation is discrepancy distance. While in general hard to compute, here we provide the first set of provably efficient algorithms for testing…

Data Structures and Algorithms · Computer Science 2024-06-14 Gautam Chandrasekaran , Adam R. Klivans , Vasilis Kontonis , Konstantinos Stavropoulos , Arsen Vasilyan

We propose reCSE, a self supervised contrastive learning sentence representation framework based on feature reshaping. This framework is different from the current advanced models that use discrete data augmentation methods, but instead…

Computation and Language · Computer Science 2024-08-27 Fufangchen Zhao , Jian Gao , Danfeng Yan

Referring expression comprehension (REC) and segmentation (RES) are two highly-related tasks, which both aim at identifying the referent according to a natural language expression. In this paper, we propose a novel Multi-task Collaborative…

Computer Vision and Pattern Recognition · Computer Science 2020-03-20 Gen Luo , Yiyi Zhou , Xiaoshuai Sun , Liujuan Cao , Chenglin Wu , Cheng Deng , Rongrong Ji

The Information Contrastive (I-Con) framework revealed that over 23 representation learning methods implicitly minimize KL divergence between data and learned distributions that encode similarities between data points. However, a KL-based…

Machine Learning · Computer Science 2025-12-05 Jasmine Shone , Zhening Li , Shaden Alshammari , Mark Hamilton , William Freeman

Repetitive action counting (RAC) aims to estimate the number of class-agnostic action occurrences in a video without exemplars. Most current RAC methods rely on a raw frame-to-frame similarity representation for period prediction. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Sujia Wang , Xiangwei Shen , Yansong Tang , Xin Dong , Wenjia Geng , Lei Chen

Kernel regression is a popular non-parametric fitting technique. It aims at learning a function which estimates the targets for test inputs as precise as possible. Generally, the function value for a test input is estimated by a weighted…

Machine Learning · Computer Science 2017-12-27 Rongqing Huang , Shiliang Sun

It is generally believed that robust training of extremely large networks is critical to their success in real-world applications. However, when taken to the extreme, methods that promote robustness can hurt the model's sensitivity to rare…

Machine Learning · Computer Science 2021-05-21 Seungyeon Kim , Daniel Glasner , Srikumar Ramalingam , Cho-Jui Hsieh , Kishore Papineni , Sanjiv Kumar

In spite of the great progress in human motion prediction, it is still a challenging task to predict those aperiodic and complicated motions. We believe that to capture the correlations among human body components is the key to understand…

Computer Vision and Pattern Recognition · Computer Science 2021-07-13 Honghong Zhou , Caili Guo , Hao Zhang , Yanjun Wang

While recent model-free Reinforcement Learning (RL) methods have demonstrated human-level effectiveness in gaming environments, their success in everyday tasks like visual navigation has been limited, particularly under significant…

Machine Learning · Computer Science 2024-04-04 Rudra P. K. Poudel , Harit Pandya , Stephan Liwicki , Roberto Cipolla

Recent feed-forward geometry foundation models have demonstrated impressive generalization by recovering depth and poses in a single forward pass. However, these models are typically constrained by a global coordinate frame assumption. This…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Congrong Xu , Huachen Gao , Xingyu Chen , Yuliang Xiu , Jun Gao , Anpei Chen

We introduce a fitness tracking system that enables remote monitoring for exercises using only a RGB smartphone camera, making fitness tracking more private, scalable, and cost effective. Although prior work explored automated exercise…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 A. Postlmayr , P. Cosman , S. Dey

We present a unified model-based and data-driven approach for quadrupedal planning and control to achieve dynamic locomotion over uneven terrain. We utilize on-board proprioceptive and exteroceptive feedback to map sensory information and…

Robotics · Computer Science 2022-05-13 Siddhant Gangapurwala , Mathieu Geisert , Romeo Orsolino , Maurice Fallon , Ioannis Havoutis

Most of the existing approaches focus on specific visual tasks while ignoring the relations between them. Estimating task relation sheds light on the learning of high-order semantic concepts, e.g., transfer learning. How to reveal the…

Machine Learning · Computer Science 2019-07-30 Guangcong Wang , Jianhuang Lai , Wenqi Liang , Guangrun Wang

This paper presents Learning-based Autonomous Guidance with RObustness and Stability guarantees (LAG-ROS), which provides machine learning-based nonlinear motion planners with formal robustness and stability guarantees, by designing a…

Robotics · Computer Science 2021-10-05 Hiroyasu Tsukamoto , Soon-Jo Chung

Motion planning under uncertainty is one of the main challenges in developing autonomous driving vehicles. In this work, we focus on the uncertainty in sensing and perception, resulted from a limited field of view, occlusions, and sensing…

Robotics · Computer Science 2021-10-05 Kasra Rezaee , Peyman Yadmellat , Simon Chamorro

The last few decades have witnessed an emerging trend of wearable soft sensors; however, there are important signal-processing challenges for soft sensors that still limit their practical deployment. They are error-prone when displaced,…

Human-Computer Interaction · Computer Science 2023-01-19 Xiaowei Chen , Xiao Jiang , Jiawei Fang , Shihui Guo , Juncong Lin , Minghong Liao , Guoliang Luo , Hongbo Fu

Inverse reinforcement learning (IRL) infers a reward function from demonstrations, allowing for policy improvement and generalization. However, despite much recent interest in IRL, little work has been done to understand the minimum set of…

Machine Learning · Computer Science 2019-08-19 Daniel S. Brown , Scott Niekum