Search Results for author: Luwan Zhang

Found 5 papers, 1 papers with code

Consensus Knowledge Graph Learning via Multi-view Sparse Low Rank Block Model

no code implementations28 Sep 2022 Tianxi Cai, Dong Xia, Luwan Zhang, Doudou Zhou

Network analysis has been a powerful tool to unveil relationships and interactions among a large number of objects.

Graph Learning

Dantzig Selector with an Approximately Optimal Denoising Matrix and its Application to Reinforcement Learning

no code implementations2 Nov 2018 Bo Liu, Luwan Zhang, Ji Liu

To make the problem computationally tractable, we propose a novel algorithm, termed as Optimal Denoising Dantzig Selector (ODDS), to approximately estimate the optimal denoising matrix.

Denoising feature selection +2

Unsupervised Ensemble Learning via Ising Model Approximation with Application to Phenotyping Prediction

no code implementations15 Oct 2018 Luwan Zhang, Tianrun Cai

In this paper, we propose a novel method-- unsupervised ensemble learning via Ising model approximation (unElisa) that combines a pruning step with a predicting step.

Ensemble Learning

Multi-view Banded Spectral Clustering with Application to ICD9 Clustering

1 code implementation6 Apr 2018 Luwan Zhang, Katherine Liao, Issac Kohane, Tianxi Cai

To bridge this gap, in this paper we propose a novel spectral clustering method that optimally combines multiple data sources while leveraging the prior distance knowledge.

Clustering Community Detection +1

Distance Shrinkage and Euclidean Embedding via Regularized Kernel Estimation

no code implementations17 Sep 2014 Luwan Zhang, Grace Wahba, Ming Yuan

Although recovering an Euclidean distance matrix from noisy observations is a common problem in practice, how well this could be done remains largely unknown.

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