Search Results for author: Han Feng

Found 18 papers, 2 papers with code

Deeper Insights into Deep Graph Convolutional Networks: Stability and Generalization

no code implementations11 Oct 2024 Guangrui Yang, Ming Li, Han Feng, Xiaosheng Zhuang

Graph convolutional networks (GCNs) have emerged as powerful models for graph learning tasks, exhibiting promising performance in various domains.

Graph Learning

Spherical Analysis of Learning Nonlinear Functionals

no code implementations1 Oct 2024 Zhenyu Yang, Shuo Huang, Han Feng, Ding-Xuan Zhou

It utilizes spherical harmonics to help us extract the latent finite-dimensional information of functions, which in turn facilitates in the next step of approximation analysis using fully connected neural networks.

Decoder

Convergence Analysis for Deep Sparse Coding via Convolutional Neural Networks

no code implementations10 Aug 2024 Jianfei Li, Han Feng, Ding-Xuan Zhou

In this work, we explore intersections between sparse coding and deep learning to enhance our understanding of feature extraction capabilities in advanced neural network architectures.

Deep Learning

Theoretical Insights into CycleGAN: Analyzing Approximation and Estimation Errors in Unpaired Data Generation

no code implementations16 Jul 2024 Luwei Sun, Dongrui Shen, Han Feng

These two error terms are analyzed separately and ultimately combined by considering the trade-off between them.

Bridging Smoothness and Approximation: Theoretical Insights into Over-Smoothing in Graph Neural Networks

no code implementations1 Jul 2024 Guangrui Yang, Jianfei Li, Ming Li, Han Feng, Ding-Xuan Zhou

In our numerical experiments, we analyze several widely applied GCNs and observe the phenomenon of energy decay.

Stratified Avatar Generation from Sparse Observations

no code implementations CVPR 2024 Han Feng, Wenchao Ma, Quankai Gao, Xianwei Zheng, Nan Xue, Huijuan Xu

This task is challenging due to the limited input from Head Mounted Devices, which capture only sparse observations from the head and hands.

Decoder

On the rates of convergence for learning with convolutional neural networks

no code implementations25 Mar 2024 Yunfei Yang, Han Feng, Ding-Xuan Zhou

Our second result gives new analysis on the covering number of feed-forward neural networks with CNNs as special cases.

Binary Classification

Permutation Equivariant Graph Framelets for Heterophilous Graph Learning

1 code implementation7 Jun 2023 Jianfei Li, Ruigang Zheng, Han Feng, Ming Li, Xiaosheng Zhuang

The nature of heterophilous graphs is significantly different from that of homophilous graphs, which causes difficulties in early graph neural network models and suggests aggregations beyond the 1-hop neighborhood.

Graph Learning Graph Neural Network

Fine-grained analysis of non-parametric estimation for pairwise learning

no code implementations31 May 2023 Junyu Zhou, Shuo Huang, Han Feng, Puyu Wang, Ding-Xuan Zhou

In this paper, we are concerned with the generalization performance of non-parametric estimation for pairwise learning.

regression

SignReLU neural network and its approximation ability

1 code implementation19 Oct 2022 Jianfei Li, Han Feng, Ding-Xuan Zhou

Deep neural networks (DNNs) have garnered significant attention in various fields of science and technology in recent years.

Approximation analysis of CNNs from a feature extraction view

no code implementations14 Oct 2022 Jianfei Li, Han Feng, Ding-Xuan Zhou

In this paper we establish some analysis for linear feature extraction by a deep multi-channel convolutional neural networks (CNNs), which demonstrates the power of deep learning over traditional linear transformations, like Fourier, wavelets, redundant dictionary coding methods.

Learning of Dynamical Systems under Adversarial Attacks -- Null Space Property Perspective

no code implementations4 Oct 2022 Han Feng, Baturalp Yalcin, Javad Lavaei

We study the identification of a linear time-invariant dynamical system affected by large-and-sparse disturbances modeling adversarial attacks or faults.

Spherical Image Inpainting with Frame Transformation and Data-driven Prior Deep Networks

no code implementations29 Sep 2022 Jianfei Li, Chaoyan Huang, Raymond Chan, Han Feng, Micheal Ng, Tieyong Zeng

Spherical image processing has been widely applied in many important fields, such as omnidirectional vision for autonomous cars, global climate modelling, and medical imaging.

Decoder Image Inpainting

Convolutional Neural Networks for Spherical Signal Processing via Spherical Haar Tight Framelets

no code implementations17 Jan 2022 Jianfei Li, Han Feng, Xiaosheng Zhuang

In this paper, we develop a general theoretical framework for constructing Haar-type tight framelets on any compact set with a hierarchical partition.

Denoising

Radial Basis Function Approximation with Distributively Stored Data on Spheres

no code implementations5 Dec 2021 Han Feng, Shao-Bo Lin, Ding-Xuan Zhou

This paper proposes a distributed weighted regularized least squares algorithm (DWRLS) based on spherical radial basis functions and spherical quadrature rules to tackle spherical data that are stored across numerous local servers and cannot be shared with each other.

Identifying Best Fair Intervention

no code implementations8 Nov 2021 Ruijiang Gao, Han Feng

We study the problem of best arm identification with a fairness constraint in a given causal model.

counterfactual Fairness

Theory of Deep Convolutional Neural Networks II: Spherical Analysis

no code implementations28 Jul 2020 Zhiying Fang, Han Feng, Shuo Huang, Ding-Xuan Zhou

Deep learning based on deep neural networks of various structures and architectures has been powerful in many practical applications, but it lacks enough theoretical verifications.

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