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Visual pointing, which aims to localize a target by predicting its coordinates on an image, has emerged as an important problem in the realm of vision-language models (VLMs). Despite its broad applicability, recent benchmarks show that…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Wenjie Yang , Zengfeng Huang

Recent work increasingly focuses on improving the reasoning capabilities of Multimodal Large Language Models (MLLMs). Among existing methods, Process Reward Models (PRMs) stand out for offering dense, step-wise supervision to guide…

Preference based Reinforcement Learning (PbRL) removes the need to hand specify a reward function by learning a reward from preference feedback over policy behaviors. Current approaches to PbRL do not address the credit assignment problem…

Machine Learning · Computer Science 2024-04-16 Mudit Verma , Katherine Metcalf

We present SWIM (See What I Mean), a novel training strategy that aligns vision and language representations to enable fine-grained object understanding solely from textual prompts. Unlike existing approaches that require explicit visual…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Boyuan Sun , Bowen Yin , Yuanming Li , Xihan Wei , Qibin Hou

Self-supervised learning has proved effective for skeleton-based human action understanding, which is an important yet challenging topic. Previous works mainly rely on contrastive learning or masked motion modeling paradigm to model the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-09 Jiahang Zhang , Lilang Lin , Jiaying Liu

Diffusion models are now commonly used to solve inverse problems in computational imaging. However, most diffusion-based inverse solvers require complete knowledge of the forward operator to be used. In this work, we introduce a novel…

Image and Video Processing · Electrical Eng. & Systems 2025-09-22 Yuanyun Hu , Evan Bell , Guijin Wang , Yu Sun

Large language models (LLMs) have enhanced conventional recommendation models via user profiling, which generates representative textual profiles from users' historical interactions. However, their direct application to session-based…

Information Retrieval · Computer Science 2026-04-16 Gyuseok Lee , Wonbin Kweon , Zhenrui Yue , Yaokun Liu , Yifan Liu , Susik Yoon , Dong Wang , SeongKu Kang

Applying reinforcement learning (RL) to real-world problems is often made challenging by the inability to interact with the environment and the difficulty of designing reward functions. Offline RL addresses the first challenge by…

Machine Learning · Computer Science 2025-03-03 Alizée Pace , Bernhard Schölkopf , Gunnar Rätsch , Giorgia Ramponi

In this paper, we investigate preference-based reinforcement learning (PbRL), which enables reinforcement learning (RL) agents to learn from human feedback. This is particularly valuable when defining a fine-grain reward function is not…

Machine Learning · Computer Science 2025-11-11 Guojian Wang , Jianxiang Liu , Xinyuan Li , Faguo Wu , Xiao Zhang , Tianyuan Chen , Xuyang Chen

Iterative data generation and model re-training can effectively align large language models(LLMs) to human preferences. The process of data sampling is crucial, as it significantly influences the success of policy improvement. Repeated…

Computation and Language · Computer Science 2024-10-07 Hai Ye , Hwee Tou Ng

Preference-Based reinforcement learning (PBRL) learns directly from the preferences of human teachers regarding agent behaviors without needing meticulously designed reward functions. However, existing PBRL methods often learn primarily…

Machine Learning · Computer Science 2024-10-16 Ziang Liu , Junjie Xu , Xingjiao Wu , Jing Yang , Liang He

Recent advances in self-supervised learning (SSL) for point clouds have substantially improved 3D scene understanding without human annotations. Existing approaches emphasize semantic awareness by enforcing feature consistency across…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Bin Yang , Mohamed Abdelsamad , Miao Zhang , Alexandru Paul Condurache

Diffusion MRI microstructure fitting is nonconvex and often performed voxelwise, which limits fiber peak recovery in narrow crossings. This work introduces PRISM, a differentiable analysis-by-synthesis framework that fits an explicit…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Mohamed Abouagour , Atharva Shah , Eleftherios Garyfallidis

Foundation models (FMs) have achieved remarkable success across a wide range of applications, from image classification to natural langurage processing, but pose significant challenges for deployment at edge. This has sparked growing…

Machine Learning · Computer Science 2025-07-17 Muhammad Azlan Qazi , Alexandros Iosifidis , Qi Zhang

Memory pressure has emerged as a dominant constraint in scaling the training of large language models (LLMs), particularly in resource-constrained environments. While modern frameworks incorporate various memory-saving techniques, they…

Distributed, Parallel, and Cluster Computing · Computer Science 2026-04-21 Hanmei Yang , Jin Zhou , Yao Fu , Xiaoqun Wang , Ramine Roane , Hui Guan , Tongping Liu

Deep Reinforcement Learning is widely used for aligning Large Language Models (LLM) with human preference. However, the conventional reward modelling is predominantly dependent on human annotations provided by a select cohort of…

Artificial Intelligence · Computer Science 2024-05-31 Dexun Li , Cong Zhang , Kuicai Dong , Derrick Goh Xin Deik , Ruiming Tang , Yong Liu

Visual coverage path planning with unmanned aerial vehicles (UAVs) requires agents to strategically coordinate UAV motion and camera control to maximize coverage, minimize redundancy, and maintain battery efficiency. Traditional…

Robotics · Computer Science 2025-07-15 Venkat Margapuri

Multimodal sequential recommendation (MSR) leverages diverse item modalities to improve recommendation accuracy, while achieving effective and adaptive fusion remains challenging. Existing MSR models often overlook synergistic information…

Information Retrieval · Computer Science 2026-01-19 Xinyi Zhang , Yutong Li , Peijie Sun , Letian Sha , Zhongxuan Han

Current techniques for post-training Large Language Models (LLMs) rely either on costly human supervision or on external verifiers to boost performance on tasks such as mathematical reasoning and code generation. However, as LLMs improve…

Computation and Language · Computer Science 2026-01-21 Mukesh Ghimire , Aosong Feng , Liwen You , Youzhi Luo , Fang Liu , Xuan Zhu

Alignment, endowing a pre-trained Large language model (LLM) with the ability to follow instructions, is crucial for its real-world applications. Conventional supervised fine-tuning (SFT) methods formalize it as causal language modeling…

Computation and Language · Computer Science 2024-12-18 Yuchen Fan , Yuzhong Hong , Qiushi Wang , Junwei Bao , Hongfei Jiang , Yang Song