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Vision-language-action (VLA) models achieve strong in-distribution performance but degrade sharply under novel camera viewpoints and visual perturbations. We show that this brittleness primarily arises from misalignment in Spatial Modeling,…

Robotics · Computer Science 2026-04-01 Weiqi Li , Quande Zhang , Ruifeng Zhai , Liang Lin , Guangrun Wang

In Federated Learning, a common approach for aggregating local models across clients is periodic averaging of the full model parameters. It is, however, known that different layers of neural networks can have a different degree of model…

Machine Learning · Computer Science 2022-01-04 Sunwoo Lee , Tuo Zhang , Chaoyang He , Salman Avestimehr

Training Large Language Models (LLMs) from scratch requires immense computational resources, making it prohibitively expensive. Model scaling-up offers a promising solution by leveraging the parameters of smaller models to create larger…

Machine Learning · Computer Science 2025-02-20 Yifei Yang , Zouying Cao , Xinbei Ma , Yao Yao , Libo Qin , Zhi Chen , Hai Zhao

In this paper, we explore an important yet previously neglected question: Do context aggregation patterns across Language Models (LMs) share commonalities? While some works have investigated context aggregation or attention weights in LMs,…

Computation and Language · Computer Science 2025-11-10 Jinglin Liang , Jin Zhong , Shuangping Huang , Yunqing Hu , Huiyuan Zhang , Huifang Li , Lixin Fan , Hanlin Gu

Visual-Language-Action (VLA) models represent a paradigm shift in embodied AI, yet existing frameworks often struggle with imprecise spatial perception, suboptimal multimodal fusion, and instability in reinforcement learning. To bridge…

Robotics · Computer Science 2026-04-27 Haoxiang Jie , Yaoyuan Yan , Xiangyu Wei , Kailin Wang , Hongjie Yan , Zhiyou Heng , Daocheng Chen

Existing low-rank adaptation (LoRA) methods face challenges on sparse large language models (LLMs) due to the inability to maintain sparsity. Recent works introduced methods that maintain sparsity by augmenting LoRA techniques with…

Computation and Language · Computer Science 2025-01-16 Yuxuan Hu , Jing Zhang , Xiaodong Chen , Zhe Zhao , Cuiping Li , Hong Chen

Serverless computing has grown rapidly for serving Large Language Model (LLM) inference due to its pay-as-you-go pricing, fine-grained GPU usage, and rapid scaling. However, our analysis reveals that current serverless can effectively serve…

Machine Learning · Computer Science 2025-05-21 Yifan Sui , Hao Wang , Hanfei Yu , Yitao Hu , Jianxun Li , Hao Wang

The precise fusion of computational fluid dynamic (CFD) data, wind tunnel tests data, and flight tests data in aerodynamic area is essential for obtaining comprehensive knowledge of both localized flow structures and global aerodynamic…

Machine Learning · Computer Science 2026-04-01 Qinye Zhu , Yu Xiang , Jun Zhang , Wenyong Wang

Recent literature has found that an effective method to customize or further improve large language models (LLMs) is to add dynamic adapters, such as low-rank adapters (LoRA) with Mixture-of-Experts (MoE) structures. Though such dynamic…

Artificial Intelligence · Computer Science 2024-05-29 Rui Kong , Qiyang Li , Xinyu Fang , Qingtian Feng , Qingfeng He , Yazhu Dong , Weijun Wang , Yuanchun Li , Linghe Kong , Yunxin Liu

Federated fine-tuning of foundation models with Low-Rank Adaptation (LoRA) provides an efficient solution for reducing communication and computation costs while preserving data locality. However, the direct combination of FedAvg and LoRA…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Zehao Wang , Guanglei Yang , Yihan Zeng , Hang Xu , Hongzhi Zhang , Wangmeng Zuo , Chun-Mei Feng

Deploying Vision-Language Models (VLMs) on edge devices is challenged by resource constraints and performance degradation under distribution shifts. While test-time adaptation (TTA) can counteract such shifts, existing methods are too…

Artificial Intelligence · Computer Science 2026-02-18 Xin Wang , Hong Jia , Hualin Zhou , Sheng Guang Wang , Yu Zhang , Ting Dang , Tao Gu

Federated learning (FL) can suffer from a communication bottleneck when deployed in mobile networks, limiting participating clients and deterring FL convergence. The impact of practical air interfaces with discrete modulations on FL has not…

Signal Processing · Electrical Eng. & Systems 2023-11-28 Shuyan Hu , Xin Yuan , Wei Ni , Xin Wang , Ekram Hossain , H. Vincent Poor

Adjoint-based sensitivity analysis methods are powerful tools for engineers who use flow simulations for design. However, the conventional adjoint method breaks down for scale-resolving simulations like large-eddy simulation (LES) or direct…

We propose a new information aggregation method which called Localized Feature Aggregation Module based on the similarity between the feature maps of an encoder and a decoder. The proposed method recovers positional information by…

Image and Video Processing · Electrical Eng. & Systems 2021-12-06 Ryouichi Furukawa , Kazuhiro Hotta

Seeing clearly with high resolution is a foundation of Large Multimodal Models (LMMs), which has been proven to be vital for visual perception and reasoning. Existing works usually employ a straightforward resolution upscaling method, where…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Yi-Fan Zhang , Qingsong Wen , Chaoyou Fu , Xue Wang , Zhang Zhang , Liang Wang , Rong Jin

Large spatiotemporal demand datasets can prove intractable for location optimization problems, motivating the need to aggregate such data. However, demand aggregation introduces error which impacts the results of the location study. We…

Applications · Statistics 2019-10-14 Zachary T. Hornberger , Bruce A. Cox , Raymond R. Hill

Accurate traffic flow prediction is vital for optimizing urban mobility, yet it remains difficult in many cities due to complex spatio-temporal dependencies and limited high-quality data. While deep graph-based models demonstrate strong…

Machine Learning · Computer Science 2025-04-04 Chenyang Yu , Xinpeng Xie , Yan Huang , Chenxi Qiu

Accurate direction-of-arrival (DOA) estimation for sound sources is challenging due to the continuous changes in acoustic characteristics across time and frequency. In such scenarios, accurate localization relies on the ability to aggregate…

Signal Processing · Electrical Eng. & Systems 2025-10-30 Qi You , Qinghua Huang , Yi-Cheng Lin

Large Language Models (LLMs) exhibit strong capabilities in text processing, and recent research has augmented SQL and DataFrame with LLM-powered semantic operators for data analysis. However, LLM-based data processing is hindered by slower…

Databases · Computer Science 2026-03-10 Chao Hui , Weizheng Lu , Yanjie Gao , Lingfeng Xiong , Yunhai Wang , Yueguo Chen

Real-time high-accuracy optical flow estimation is critical for a variety of real-world robotic applications. However, current learning-based methods often struggle to balance accuracy and computational efficiency: methods that achieve high…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zhiyong Zhang , Aniket Gupta , Huaizu Jiang , Hanumant Singh
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