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Policy learning under action constraints plays a central role in ensuring safe behaviors in various robot control and resource allocation applications. In this paper, we study a new problem setting termed Action-Constrained Imitation…

Robotics · Computer Science 2025-08-21 Chia-Han Yeh , Tse-Sheng Nan , Risto Vuorio , Wei Hung , Hung-Yen Wu , Shao-Hua Sun , Ping-Chun Hsieh

Training a policy in a source domain for deployment in the target domain under a dynamics shift can be challenging, often resulting in performance degradation. Previous work tackles this challenge by training on the source domain with…

Machine Learning · Computer Science 2024-11-18 Yihong Guo , Yixuan Wang , Yuanyuan Shi , Pan Xu , Anqi Liu

Assistant AI agents should be capable of rapidly acquiring novel skills and adapting to new user preferences. Traditional frameworks like imitation learning and reinforcement learning do not facilitate this capability because they support…

Machine Learning · Computer Science 2023-10-23 Ruijie Zheng , Khanh Nguyen , Hal Daumé , Furong Huang , Karthik Narasimhan

The goal of optimization-based meta-learning is to find a single initialization shared across a distribution of tasks to speed up the process of learning new tasks. Conditional meta-learning seeks task-specific initialization to better…

Machine Learning · Computer Science 2020-10-20 Ruohan Wang , Yiannis Demiris , Carlo Ciliberto

Deep learning models for natural language processing rely heavily on high-quality labeled datasets. However, existing labeling approaches often struggle to balance label quality with labeling cost. To address this challenge, we propose…

Human-Computer Interaction · Computer Science 2026-02-17 Guozheng Li , Ao Wang , Shaoxiang Wang , Yu Zhang , Pengcheng Cao , Yang Bai , Chi Harold Liu

As deep learning continues to evolve, the need for data efficiency becomes increasingly important. Considering labeling large datasets is both time-consuming and expensive, active learning (AL) provides a promising solution to this…

Machine Learning · Computer Science 2025-05-21 Yifeng Wang , Xueying Zhan , Siyu Huang

Active learning seeks to achieve strong performance with fewer training samples. It does this by iteratively asking an oracle to label new selected samples in a human-in-the-loop manner. This technique has gained increasing popularity due…

Machine Learning · Computer Science 2024-07-16 Dongyuan Li , Zhen Wang , Yankai Chen , Renhe Jiang , Weiping Ding , Manabu Okumura

Reinforcement learning (RL) has become a central post-training paradigm for large language models (LLMs), but its performance is highly sensitive to the quality of training problems. This sensitivity stems from the non-stationarity of RL:…

Machine Learning · Computer Science 2026-02-26 Ningyuan Yang , Weihua Du , Weiwei Sun , Sean Welleck , Yiming Yang

Due to the model aging problem, Deep Neural Networks (DNNs) need updates to adjust them to new data distributions. The common practice leverages incremental learning (IL), e.g., Class-based Incremental Learning (CIL) that updates output…

Machine Learning · Computer Science 2023-04-11 Xuanqi Gao , Juan Zhai , Shiqing Ma , Chao Shen , Yufei Chen , Shiwei Wang

Multi-modal learning has emerged as a key technique for improving performance across domains such as autonomous driving, robotics, and reasoning. However, in certain scenarios, particularly in resource-constrained environments, some…

Robotics · Computer Science 2026-01-01 Rui Liu , Yu Shen , Peng Gao , Pratap Tokekar , Ming Lin

Advanced biological intelligence learns efficiently from an information-rich stream of stimulus information, even when feedback on behaviour quality is sparse or absent. Such learning exploits implicit assumptions about task domains. We…

Neural and Evolutionary Computing · Computer Science 2024-08-05 Solvi Arnold , Reiji Suzuki , Takaya Arita , Kimitoshi Yamazaki

Semantic communication shifts the focus from bit-level accuracy to task-relevant semantic delivery, enabling efficient and intelligent communication for next-generation networks. However, existing multi-modal solutions often process all…

Information Theory · Computer Science 2026-01-01 Yujie Zhou , Cheng Peng , Rulong Wang , Yong Xiao , Yingyu Li , Guangming Shi , Ping Zhang

Standard meta-learning for representation learning aims to find a common representation to be shared across multiple tasks. The effectiveness of these methods is often limited when the nuances of the tasks' distribution cannot be captured…

Machine Learning · Computer Science 2021-03-31 Giulia Denevi , Massimiliano Pontil , Carlo Ciliberto

Multilingual semantic search is the task of retrieving relevant contents to a query expressed in different language combinations. This requires a better semantic understanding of the user's intent and its contextual meaning. Multilingual…

Computation and Language · Computer Science 2023-09-18 Meryem M'hamdi , Jonathan May , Franck Dernoncourt , Trung Bui , Seunghyun Yoon

Generative Adversarial Imitation Learning (GAIL) is a powerful and practical approach for learning sequential decision-making policies. Different from Reinforcement Learning (RL), GAIL takes advantage of demonstration data by experts (e.g.,…

Machine Learning · Computer Science 2020-01-14 Minshuo Chen , Yizhou Wang , Tianyi Liu , Zhuoran Yang , Xingguo Li , Zhaoran Wang , Tuo Zhao

Deep learning methods typically depend on the availability of labeled data, which is expensive and time-consuming to obtain. Active learning addresses such effort by prioritizing which samples are best to annotate in order to maximize the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Mélanie Gaillochet , Christian Desrosiers , Hervé Lombaert

Multimodal image-tabular learning is gaining attention, yet it faces challenges due to limited labeled data. While earlier work has applied self-supervised learning (SSL) to unlabeled data, its task-agnostic nature often results in learning…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Siyi Du , Xinzhe Luo , Declan P. O'Regan , Chen Qin

We study a robust alternative to empirical risk minimization called distributionally robust learning (DRL), in which one learns to perform against an adversary who can choose the data distribution from a specified set of distributions. We…

Machine Learning · Computer Science 2019-12-19 Charlie Frogner , Sebastian Claici , Edward Chien , Justin Solomon

Teaching an agent to perform new tasks using natural language can easily be hindered by ambiguities in interpretation. When a teacher provides an instruction to a learner about an object by referring to its features, the learner can…

Machine Learning · Computer Science 2023-09-28 Hugo Caselles-Dupré , Olivier Sigaud , Mohamed Chetouani

Incremental learning (IL) aims to overcome catastrophic forgetting of previous tasks while learning new ones. Existing IL methods make strong assumptions that the incoming task type will either only increases new classes or domains (i.e.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-21 Sheng Luo , Yi Zhou , Tao Zhou