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Graphical User Interface (GUI) agents offer cross-platform solutions for automating complex digital tasks, with significant potential to transform productivity workflows. However, their performance is often constrained by the scarcity of…

Artificial Intelligence · Computer Science 2025-04-16 Junlei Zhang , Zichen Ding , Chang Ma , Zijie Chen , Qiushi Sun , Zhenzhong Lan , Junxian He

Reinforcement learning has emerged as a principled post-training paradigm for Temporal Video Grounding (TVG) due to its on-policy optimization, yet existing GRPO-based methods remain fundamentally constrained by sparse reward signals and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Jiaze Li , Hao Yin , Haoran Xu , Boshen Xu , Wenhui Tan , Zewen He , Jianzhong Ju , Zhenbo Luo , Jian Luan

The training of high-quality, robust machine learning models for speech-driven 3D facial animation requires a large, diverse dataset of high-quality audio-animation pairs. To overcome the lack of such a dataset, recent work has introduced…

Graphics · Computer Science 2026-02-13 Zhen Han , Mattias Teye , Derek Yadgaroff , Judith Bütepage

The transfer of knowledge from one policy to another is an important tool in Deep Reinforcement Learning. This process, referred to as distillation, has been used to great success, for example, by enhancing the optimisation of agents,…

Autonomous GUI agents based on vision-language models (VLMs) often assume deterministic environment responses, generating actions without verifying whether previous operations succeeded. In real-world settings with network latency,…

Computation and Language · Computer Science 2026-04-08 Yuzhe Zhang , Xianwei Xue , Xingyong Wu , Mengke Chen , Chen Liu , Xinran He , Run Shao , Feiran Liu , Huanmin Xu , Qiutong Pan , Haiwei Wang

Post-training has become central to turning pretrained large language models (LLMs) into aligned, capable, and deployable systems. Recent progress spans supervised fine-tuning (SFT), preference optimization, reinforcement learning (RL),…

Computation and Language · Computer Science 2026-04-17 Shiwan Zhao , Zhihu Wang , Xuyang Zhao , Jiaming Zhou , Caiyue Xu , Chenfei Liu , Liting Zhang , Yuhang Jia , Yanzhe Zhang , Hualong Yu , Zichen Xu , Qicheng Li , Yong Qin

Knowledge distillation from pretrained visual representation models offers an effective approach to improve small, task-specific production models. However, the effectiveness of such knowledge transfer drops significantly when distilling…

Machine Learning · Computer Science 2025-07-01 Chengyu Dong , Huan Gui , Noveen Sachdeva , Long Jin , Ke Yin , Jingbo Shang , Lichan Hong , Ed H. Chi , Zhe Zhao

Over the past year, the emergence of transfer learning with large-scale language models (LM) has led to dramatic performance improvements across a broad range of natural language understanding tasks. However, the size and memory footprint…

Computation and Language · Computer Science 2020-02-04 Luke Melas-Kyriazi , George Han , Celine Liang

Large language model post-training methods such as supervised fine-tuning (SFT), reinforcement learning (RL), and distillation are often analyzed through their loss functions: maximum likelihood, policy gradients, forward KL, reverse KL, or…

Machine Learning · Computer Science 2026-05-22 Dong Nie

Hierarchical policies for language-conditioned manipulation decompose tasks into subgoals, where a high-level planner guides a low-level controller. However, these hierarchical agents often fail because the planner generates subgoals…

Robotics · Computer Science 2026-03-06 Clemence Grislain , Olivier Sigaud , Mohamed Chetouani

Post-training paradigms for Large Language Models (LLMs), primarily Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL), face a fundamental dilemma: SFT provides stability (low variance) but suffers from high fitting bias, while RL…

Machine Learning · Computer Science 2026-04-13 Taojie Zhu , Dongyang Xu , Ding Zou , Sen Zhao , Qiaobo Hao , Zhiguo Yang , Yonghong He

Video generation has recently emerged as a central task in the field of generative AI. However, the substantial computational cost inherent in video synthesis makes model distillation a critical technique for efficient deployment. Despite…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Yuyang You , Yongzhi Li , Jiahui Li , Yadong Mu , Quan Chen , Peng Jiang

Previous study suggest that powerful Large Language Models (LLMs) trained with Reinforcement Learning with Verifiable Rewards (RLVR) only refines reasoning path without improving the reasoning capacity in math tasks while…

Computation and Language · Computer Science 2025-05-29 Ran Li , Shimin Di , Yuchen Liu , Chen Jing , Yu Qiu , Lei Chen

Dataset distillation compresses a large dataset into a small synthetic dataset such that learning on the synthetic dataset approximates learning on the original. Training on the distilled dataset can be performed in as little as one step of…

Machine Learning · Computer Science 2025-08-14 Connor Wilhelm , Dan Ventura

Recent studies have focused on leveraging large-scale artificial intelligence (LAI) models to improve semantic representation and compression capabilities. However, the substantial computational demands of LAI models pose significant…

Machine Learning · Computer Science 2025-06-17 Chuanhong Liu , Caili Guo , Yang Yang , Mingzhe Chen , Tony Q. S. Quek

Adapting pretrained language models (LMs) into vision-language models (VLMs) can degrade their native linguistic capability due to representation shift and cross-modal interference introduced during multimodal adaptation. Such loss is…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Patrick Amadeus Irawan , Erland Hilman Fuadi , Shanu Kumar , Alham Fikri Aji , Yova Kementchedjhieva

Evaluating GUI agents presents a distinct challenge: trajectories are long, visually grounded, and open-ended, yet evaluation must be both accurate and interpretable. Existing approaches typically apply a single holistic judgment over the…

Artificial Intelligence · Computer Science 2026-04-07 Yuwen Zhai , Runze Li , Liang Wang , Nian Shi , Liwu Xu , Wei Zhang , Ran Lin , Bo Xu , Benlei Cui

Deploying medical image segmentation models in routine clinical workflows is often constrained by on-premises infrastructure, where computational resources are fixed and cloud-based inference may be restricted by governance and security…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Qizhen Lan , Aaron Choi , Jun Ma , Bo Wang , Zhaogming Zhao , Xiaoqian Jiang , Yu-Chun Hsu

Recent advancements in dataset distillation have demonstrated the significant benefits of employing soft labels generated by pre-trained teacher models. In this paper, we introduce a novel perspective by emphasizing the full utilization of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-07 Xinyi Shang , Peng Sun , Tao Lin

State-of-the-art CNN based recognition models are often computationally prohibitive to deploy on low-end devices. A promising high level approach tackling this limitation is knowledge distillation, which let small student model mimic…

Computer Vision and Pattern Recognition · Computer Science 2019-10-31 Tao Wang , Li Yuan , Xiaopeng Zhang , Jiashi Feng