Search Results for author: Jiwei Zhang

Found 7 papers, 0 papers with code

Learning to Prune Instances of Steiner Tree Problem in Graphs

no code implementations25 Aug 2022 Jiwei Zhang, Deepak Ajwani

In this paper, we use this learning framework on the Steiner tree problem and show that even on this problem, the learning-to-prune framework results in computing near-optimal solutions at a fraction of the time required by commercial ILP solvers.

Steiner Tree Problem

Variational Autoencoder with CCA for Audio-Visual Cross-Modal Retrieval

no code implementations5 Dec 2021 Jiwei Zhang, Yi Yu, Suhua Tang, Jianming Wu, Wei Li

On the one hand, audio encoder and visual encoder separately encode audio data and visual data into two different latent spaces.

Cross-Modal Retrieval Information Retrieval +1

Simultaneous Imaging Achiral and Chiral Domains beyond Diffraction Limit by Structured-illumination Microscopy

no code implementations10 Mar 2021 Jiwei Zhang, Shiang-Yu Huang, Ankit Kumar Singh, Jer-Shing Huang

Chiral SIM is suitable for imaging chiral domains at sub-wavelength resolution but loses the high spatial frequency of the achiral ones.

Image Reconstruction Super-Resolution Optics Biological Physics

Sharp pointwise-in-time error estimate of L1 scheme for nonlinear subdiffusion equations

no code implementations12 Jan 2021 Dongfang Li, Hongyu Qin, Jiwei Zhang

An essential feature of the subdiffusion equations with the $\alpha$-order time fractional derivative is the weak singularity at the initial time.

Numerical Analysis Numerical Analysis 65M06, 65M12, 65M15, 35R11 F.2.2

Plasmonic elliptical nanoholes for chiroptical analysis and enantioselective optical trapping

no code implementations12 Jan 2021 Zhan-Hong Lin, Jiwei Zhang, Jer-Shing Huang

Under linearly polarized excitation, an elliptical nanohole in a thin gold film can generate a localized chiral optical field for chiroptical analysis and simultaneously serve as a near-field optical trap to capture dielectric and plasmonic nanospheres.

Optics Mesoscale and Nanoscale Physics Materials Science Applied Physics Chemical Physics

Frequency Principle in Deep Learning Beyond Gradient-descent-based Training

no code implementations4 Jan 2021 Yuheng Ma, Zhi-Qin John Xu, Jiwei Zhang

Frequency perspective recently makes progress in understanding deep learning.

A priori generalization error for two-layer ReLU neural network through minimum norm solution

no code implementations6 Dec 2019 Zhi-Qin John Xu, Jiwei Zhang, Yaoyu Zhang, Chengchao Zhao

We first estimate \emph{a priori} generalization error of finite-width two-layer ReLU NN with constraint of minimal norm solution, which is proved by \cite{zhang2019type} to be an equivalent solution of a linearized (w. r. t.

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