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We study constrained reinforcement learning (CRL) from a novel perspective by setting constraints directly on state density functions, rather than the value functions considered by previous works. State density has a clear physical and…

Machine Learning · Computer Science 2021-06-25 Zengyi Qin , Yuxiao Chen , Chuchu Fan

Deep reinforcement learning (DRL) is one of the most powerful tools for synthesizing complex robotic behaviors. But training DRL models is incredibly compute and memory intensive, requiring large training datasets and replay buffers to…

Robotics · Computer Science 2023-04-25 Lev Grossman , Brian Plancher

Video spatial reasoning, which involves inferring the underlying spatial structure from observed video frames, poses a significant challenge for existing Multimodal Large Language Models (MLLMs). This limitation stems primarily from 1) the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Kun Ouyang , Yuanxin Liu , Haoning Wu , Yi Liu , Hao Zhou , Jie Zhou , Fandong Meng , Xu Sun

In virtualized radio access network (vRAN), the base station (BS) functions are decomposed into virtualized components that can be hosted at the centralized unit or distributed units through functional splits. Such flexibility has many…

Networking and Internet Architecture · Computer Science 2022-06-06 Fahri Wisnu Murti , Samad Ali , Matti Latva-aho

Collecting training data from the physical world is usually time-consuming and even dangerous for fragile robots, and thus, recent advances in robot learning advocate the use of simulators as the training platform. Unfortunately, the…

With the availability of many datasets tailored for autonomous driving in real-world urban scenes, semantic segmentation for urban driving scenes achieves significant progress. However, semantic segmentation for off-road, unstructured…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Youngsaeng Jin , David K. Han , Hanseok Ko

Despite the tremendous success of Reinforcement Learning (RL) algorithms in simulation environments, applying RL to real-world applications still faces many challenges. A major concern is safety, in another word, constraint satisfaction.…

Machine Learning · Computer Science 2023-07-04 Weiye Zhao , Tairan He , Rui Chen , Tianhao Wei , Changliu Liu

While reinforcement learning (RL) can empower autonomous agents by enabling self-improvement through interaction, its practical adoption remains challenging due to costly rollouts, limited task diversity, unreliable reward signals, and…

The development of autonomous agents for complex, long-horizon tasks is a central goal in AI. However, dominant training paradigms face a critical limitation: reinforcement learning (RL) methods that optimize solely for final task success…

Machine Learning · Computer Science 2025-07-31 Zijing Zhang , Ziyang Chen , Mingxiao Li , Zhaopeng Tu , Xiaolong Li

The layout of analog ICs requires making complex trade-offs, while addressing device physics and variability of the circuits. This makes full automation with learning-based solutions hard to achieve. However, reinforcement learning (RL) has…

Artificial Intelligence · Computer Science 2025-05-09 Sandro Junior Della Rovere , Davide Basso , Luca Bortolussi , Mirjana Videnovic-Misic , Husni Habal

High-dimensional always-changing environments constitute a hard challenge for current reinforcement learning techniques. Artificial agents, nowadays, are often trained off-line in very static and controlled conditions in simulation such…

Machine Learning · Computer Science 2020-04-22 Vincenzo Lomonaco , Karan Desai , Eugenio Culurciello , Davide Maltoni

High-resolution (HR) remote sensing imagery plays a vital role in a wide range of applications, including urban planning and environmental monitoring. However, due to limitations in sensors and data transmission links, the images acquired…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Bowen Chen , Keyan Chen , Mohan Yang , Zhengxia Zou , Zhenwei Shi

A key challenge in model-based reinforcement learning (RL) is to synthesize computationally efficient and accurate environment models. We show that carefully designed generative models that learn and operate on compact state…

Humans can perceive and reason about spatial relationships from sequential visual observations, such as egocentric video streams. However, how pretrained models acquire such abilities, especially high-level reasoning, remains unclear. This…

Artificial Intelligence · Computer Science 2025-04-18 Baining Zhao , Ziyou Wang , Jianjie Fang , Chen Gao , Fanhang Man , Jinqiang Cui , Xin Wang , Xinlei Chen , Yong Li , Wenwu Zhu

We present a data-efficient framework for solving visuomotor sequential decision-making problems which exploits the combination of reinforcement learning (RL) and latent variable generative models. Our framework trains deep visuomotor…

Robotics · Computer Science 2020-11-09 Ali Ghadirzadeh , Petra Poklukar , Ville Kyrki , Danica Kragic , Mårten Björkman

Reinforcement learning with verifiable rewards (RLVR) has demonstrated superior performance in enhancing the reasoning capability of large language models (LLMs). However, this accuracy-oriented learning paradigm often suffers from entropy…

Artificial Intelligence · Computer Science 2026-01-19 Hongye Cao , Zhixin Bai , Ziyue Peng , Boyan Wang , Tianpei Yang , Jing Huo , Yuyao Zhang , Yang Gao

Autonomous robotic manipulation in clutter is challenging. A large variety of objects must be perceived in complex scenes, where they are partially occluded and embedded among many distractors, often in restricted spaces. To tackle these…

Computer Vision and Pattern Recognition · Computer Science 2018-10-03 Max Schwarz , Anton Milan , Arul Selvam Periyasamy , Sven Behnke

Recognition of surgical gesture is crucial for surgical skill assessment and efficient surgery training. Prior works on this task are based on either variant graphical models such as HMMs and CRFs, or deep learning models such as Recurrent…

Computer Vision and Pattern Recognition · Computer Science 2018-06-22 Daochang Liu , Tingting Jiang

Although Large Audio-Language Models (LALMs) have exhibited outstanding performance in auditory understanding, their performance in affective computing scenarios, particularly in emotion recognition, reasoning, and subtle sentiment…

Sound · Computer Science 2025-09-23 Pengcheng Li , Botao Zhao , Zuheng Kang , Junqing Peng , Xiaoyang Qu , Yayun He , Jianzong Wang

Reasoning Segmentation (RS) is a multimodal vision-text task that requires segmenting objects based on implicit text queries, demanding both precise visual perception and vision-text reasoning capabilities. Current RS approaches rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Yizhen Li , Dell Zhang , Xuelong Li , Yiqing Shen