Search Results for author: Liwei Xu

Found 5 papers, 1 papers with code

Macroscopic auxiliary asymptotic preserving neural networks for the linear radiative transfer equations

no code implementations4 Mar 2024 Hongyan Li, Song Jiang, Wenjun Sun, Liwei Xu, Guanyu Zhou

We develop a Macroscopic Auxiliary Asymptotic-Preserving Neural Network (MA-APNN) method to solve the time-dependent linear radiative transfer equations (LRTEs), which have a multi-scale nature and high dimensionality.

Learning More Discriminative Local Descriptors for Few-shot Learning

no code implementations15 May 2023 Qijun Song, Siyun Zhou, Liwei Xu

Few-shot learning for image classification comes up as a hot topic in computer vision, which aims at fast learning from a limited number of labeled images and generalize over the new tasks.

Few-Shot Learning Image Classification

A model-data asymptotic-preserving neural network method based on micro-macro decomposition for gray radiative transfer equations

no code implementations11 Dec 2022 Hongyan Li, Song Jiang, Wenjun Sun, Liwei Xu, Guanyu Zhou

We propose a model-data asymptotic-preserving neural network(MD-APNN) method to solve the nonlinear gray radiative transfer equations(GRTEs).

Big-Data Clustering: K-Means or K-Indicators?

1 code implementation3 Jun 2019 Feiyu Chen, Yuchen Yang, Liwei Xu, Taiping Zhang, Yin Zhang

The K-means algorithm is arguably the most popular data clustering method, commonly applied to processed datasets in some "feature spaces", as is in spectral clustering.

Clustering

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