Search Results for author: Ming-Jun Lai

Found 7 papers, 3 papers with code

Maximal Volume Matrix Cross Approximation for Image Compression and Least Squares Solution

no code implementations29 Sep 2023 Kenneth Allen, Ming-Jun Lai, Zhaiming Shen

Our main results consist of an improvement of a classic estimate for matrix cross approximation and a greedy approach for finding the maximal volume submatrices.

Computational Efficiency Image Compression

Semi-supervised Local Cluster Extraction by Compressive Sensing

no code implementations20 Nov 2022 Zhaiming Shen, Ming-Jun Lai, Sheng Li

Local clustering problem aims at extracting a small local structure inside a graph without the necessity of knowing the entire graph structure.

Compressive Sensing

A Compressed Sensing Based Least Squares Approach to Semi-supervised Local Cluster Extraction

1 code implementation7 Feb 2022 Ming-Jun Lai, Zhaiming Shen

A least squares semi-supervised local clustering algorithm based on the idea of compressed sensing is proposed to extract clusters from a graph with known adjacency matrix.

Clustering Stochastic Block Model

Compressive Sensing for cut improvement and local clustering

1 code implementation17 Aug 2018 Ming-Jun Lai, Daniel Mckenzie

We show how one can phrase the cut improvement problem for graphs as a sparse recovery problem, whence one can use algorithms originally developed for use in compressive sensing (such as SubspacePursuit or CoSaMP) to solve it.

Information Theory Numerical Analysis Social and Information Networks Information Theory Numerical Analysis 68Q25, 68R10, 68U05, 94A12

A Compressive Sensing Approach to Community Detection with Applications

no code implementations30 Aug 2017 Ming-Jun Lai, Daniel Mckenzie

The community detection problem for graphs asks one to partition the n vertices V of a graph G into k communities, or clusters, such that there are many intracluster edges and few intercluster edges.

Clustering Community Detection +2

Stochastic Coordinate Coding and Its Application for Drosophila Gene Expression Pattern Annotation

no code implementations30 Jul 2014 Binbin Lin, Qingyang Li, Qian Sun, Ming-Jun Lai, Ian Davidson, Wei Fan, Jieping Ye

The effectiveness of gene expression pattern annotation relies on the quality of feature representation.

Orthogonal Rank-One Matrix Pursuit for Low Rank Matrix Completion

1 code implementation4 Apr 2014 Zheng Wang, Ming-Jun Lai, Zhaosong Lu, Wei Fan, Hasan Davulcu, Jieping Ye

Numerical results show that our proposed algorithm is more efficient than competing algorithms while achieving similar or better prediction performance.

Low-Rank Matrix Completion

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