Search Results for author: Zhigang Yao

Found 5 papers, 1 papers with code

Ridge Estimation with Nonlinear Transformations

no code implementations9 Jun 2023 Zheng Zhai, Hengchao Chen, Zhigang Yao

The main result proves the inclusion relationship between ridges: $\cR(f\circ p)\subseteq \cR(p)$, provided that the transformation $f$ is strictly increasing and concave on the range of the function $p$.

Manifold Fitting in Ambient Space

no code implementations30 Sep 2019 Zhigang Yao, Bingjie Li, Wee Chin Tan

Inspired by the relation between the eigenvalues of the Laplace-Beltrami operator and the geometry of a manifold, we aim to find a small set of points that preserve the geometry of the underlying manifold.

Dimensionality Reduction

Manifold Fitting under Unbounded Noise

1 code implementation23 Sep 2019 Zhigang Yao, Yuqing Xia

Numerical simulations are provided to validate our theoretical findings and demonstrate the advantages of our method over other relevant manifold fitting methods.

Dimensionality Reduction

Principal Boundary on Riemannian Manifolds

no code implementations21 Oct 2017 Zhigang Yao, Zhenyue Zhang

We consider the classification problem and focus on nonlinear methods for classification on manifolds.

Classification General Classification

Optimal classification in sparse Gaussian graphic model

no code implementations21 Dec 2012 Yingying Fan, Jiashun Jin, Zhigang Yao

We propose a two-stage classification method where we first select features by the method of Innovated Thresholding (IT), and then use the retained features and Fisher's LDA for classification.

Classification General Classification +1

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