activity
20182026
most citedHelios: Heterogeneity-Aware Federated Learning with Dynamically Balanced Collaboration

20 citations · 57 across the 17 of their papers we have counts for

collaborators

18 papers

cs.AR2026

HyperCut: Fast Inter-Layer Scheduling via Directed Hypergraph and Early Filtering

Ziang Wei, Zirui Xu, Sufeng Guo +4

As deep neural networks (DNNs) continue to scale, inter-layer scheduling, which orchestrates the spatial allocation of compute resources and the temporal execution order across lay…

cs.CV2025

Unlocking Zero-Shot Geospatial Reasoning via Indirect Rewards

Chenhui Xu, Fuxun Yu, Michael J. Bianco +15

Training robust reasoning vision-language models (VLMs) in rare domains (such as geospatial) is fundamentally constrained by supervision scarcity. While raw geospatial imagery is a…

cs.CV2025

Geospatial Foundational Embedder: Top-1 Winning Solution on EarthVision Embed2Scale Challenge (CVPR 2025)

Zirui Xu, Raphael Tang, Mike Bianco +4

EarthVision Embed2Scale challenge (CVPR 2025) aims to develop foundational geospatial models to embed SSL4EO-S12 hyperspectral geospatial data cubes into embedding vectors that fac…

cs.LG2024

Infinite-Dimensional Feature Interaction

Chenhui Xu, Fuxun Yu, Maoliang Li +4

The past neural network design has largely focused on feature representation space dimension and its capacity scaling (e.g., width, depth), but overlooked the feature interaction s…

cs.LG2024

Out-of-Distribution Detection via Deep Multi-Comprehension Ensemble

Chenhui Xu, Fuxun Yu, Zirui Xu +2

Recent research underscores the pivotal role of the Out-of-Distribution (OOD) feature representation field scale in determining the efficacy of models in OOD detection. Consequentl…

cs.LG2023

QuadraNet: Improving High-Order Neural Interaction Efficiency with Hardware-Aware Quadratic Neural Networks

Chenhui Xu, Fuxun Yu, Zirui Xu +3

Recent progress in computer vision-oriented neural network designs is mostly driven by capturing high-order neural interactions among inputs and features. And there emerged a varie…

eess.SY2023

Leveraging Untrustworthy Commands for Multi-Robot Coordination in Unpredictable Environments: A Bandit Submodular Maximization Approach

Zirui Xu, Xiaofeng Lin, Vasileios Tzoumas

We study the problem of multi-agent coordination in unpredictable and partially-observable environments with untrustworthy external commands. The commands are actions suggested to…

eess.SY2022★ 1 cited

Online Submodular Coordination with Bounded Tracking Regret: Theory, Algorithm, and Applications to Multi-Robot Coordination

Zirui Xu, Hongyu Zhou, Vasileios Tzoumas

We enable efficient and effective coordination in unpredictable environments, i.e., in environments whose future evolution is unknown a priori and even adversarial. We are motivate…

math.OC2022★ 1 cited

Resource-Aware Distributed Submodular Maximization: A Paradigm for Multi-Robot Decision-Making

Zirui Xu, Vasileios Tzoumas

Multi-robot decision-making is the process where multiple robots coordinate actions. In this paper, we aim for efficient and effective multi-robot decision-making despite the robot…

cs.LG2022★ 14 cited

QuadraLib: A Performant Quadratic Neural Network Library for Architecture Optimization and Design Exploration

Zirui Xu, Fuxun Yu, Jinjun Xiong +1

The significant success of Deep Neural Networks (DNNs) is highly promoted by the multiple sophisticated DNN libraries. On the contrary, although some work have proved that Quadrati…

cs.AR2020★ 4 cited

Towards Latency-aware DNN Optimization with GPU Runtime Analysis and Tail Effect Elimination

Fuxun Yu, Zirui Xu, Tong Shen +12

Despite the superb performance of State-Of-The-Art (SOTA) DNNs, the increasing computational cost makes them very challenging to meet real-time latency and accuracy requirements. A…

cs.NI2020★ 3 cited

Efficient Neural Network Implementation with Quadratic Neuron

Zirui Xu, Jinjun Xiong, Fuxun Yu +1

Previous works proved that the combination of the linear neuron network with nonlinear activation functions (e.g. ReLu) can achieve nonlinear function approximation. However, simpl…

cs.LG2020

Heterogeneous Federated Learning

Fuxun Yu, Weishan Zhang, Zhuwei Qin +5

Federated learning learns from scattered data by fusing collaborative models from local nodes. However, due to chaotic information distribution, the model fusion may suffer from st…

cs.DC2019★ 20 cited

Helios: Heterogeneity-Aware Federated Learning with Dynamically Balanced Collaboration

Zirui Xu, Fuxun Yu, Jinjun Xiong +1

In this paper, we propose Helios, a heterogeneity-aware FL framework to tackle the straggler issue. Helios identifies individual devices' heterogeneous training capability, and the…

cs.CV2019★ 3 cited

LanCe: A Comprehensive and Lightweight CNN Defense Methodology against Physical Adversarial Attacks on Embedded Multimedia Applications

Zirui Xu, Fuxun Yu, Xiang Chen

Recently, adversarial attacks can be applied to the physical world, causing practical issues to various Convolutional Neural Networks (CNNs) powered applications. Most existing phy…

cs.CR2019★ 2 cited

DoPa: A Comprehensive CNN Detection Methodology against Physical Adversarial Attacks

Zirui Xu, Fuxun Yu, Xiang Chen

Recently, Convolutional Neural Networks (CNNs) demonstrate a considerable vulnerability to adversarial attacks, which can be easily misled by adversarial perturbations. With more a…

cs.CR2018★ 1 cited

HASP: A High-Performance Adaptive Mobile Security Enhancement Against Malicious Speech Recognition

Zirui Xu, Fuxun Yu, Chenchen Liu +1

Nowadays, machine learning based Automatic Speech Recognition (ASR) technique has widely spread in smartphones, home devices, and public facilities. As convenient as this technolog…

cs.LG2018★ 8 cited

Towards Robust Training of Neural Networks by Regularizing Adversarial Gradients

Fuxun Yu, Zirui Xu, Yanzhi Wang +2

In recent years, neural networks have demonstrated outstanding effectiveness in a large amount of applications.However, recent works have shown that neural networks are susceptible…