Search Results for author: Shuyang Ling

Found 8 papers, 2 papers with code

Cross Entropy versus Label Smoothing: A Neural Collapse Perspective

no code implementations6 Feb 2024 Li Guo, Keith Ross, Zifan Zhao, George Andriopoulos, Shuyang Ling, Yufeng Xu, Zixuan Dong

We first show empirically that models trained with label smoothing converge faster to neural collapse solutions and attain a stronger level of neural collapse.

Neural Collapse for Unconstrained Feature Model under Cross-entropy Loss with Imbalanced Data

1 code implementation18 Sep 2023 Wanli Hong, Shuyang Ling

In this paper, we study the extension of N C phenomenon to the imbalanced data under cross-entropy loss function in the context of unconstrained feature model.

Improved theoretical guarantee for rank aggregation via spectral method

no code implementations7 Sep 2023 Ziliang Samuel Zhong, Shuyang Ling

As it is generally NP-hard to find a global ranking that minimizes the mismatch (known as the Kemeny optimization), we focus on the Erd\"os-R\'enyi outliers (ERO) model for this ranking problem.

Recommendation Systems

Generalized Orthogonal Procrustes Problem under Arbitrary Adversaries

no code implementations29 Jun 2021 Shuyang Ling

We study the semidefinite relaxation (SDR) and an iterative method named generalized power method (GPM) to find the least squares estimator, and investigate the performance under a signal-plus-noise model.

Near-Optimal Performance Bounds for Orthogonal and Permutation Group Synchronization via Spectral Methods

no code implementations12 Aug 2020 Shuyang Ling

In particular, for orthogonal group synchronization, we obtain a near-optimal performance bound for the group recovery in presence of additive Gaussian noise.

Strong Consistency, Graph Laplacians, and the Stochastic Block Model

no code implementations21 Apr 2020 Shaofeng Deng, Shuyang Ling, Thomas Strohmer

We study the performance of classical two-step spectral clustering via the graph Laplacian to learn the stochastic block model.

Clustering Community Detection +1

Rapid, Robust, and Reliable Blind Deconvolution via Nonconvex Optimization

1 code implementation15 Jun 2016 XiaoDong Li, Shuyang Ling, Thomas Strohmer, Ke Wei

To the best of our knowledge, our algorithm is the first blind deconvolution algorithm that is numerically efficient, robust against noise, and comes with rigorous recovery guarantees under certain subspace conditions.

Information Theory Information Theory

Cannot find the paper you are looking for? You can Submit a new open access paper.