Search Results for author: Chanwoo Lee

Found 7 papers, 0 papers with code

Statistical and computational rates in high rank tensor estimation

no code implementations8 Apr 2023 Chanwoo Lee, Miaoyan Wang

We find that high-dimensional latent variable tensors are of log-rank; the fact explains the pervasiveness of low-rank tensors in applications.

Recommendation Systems Vocal Bursts Intensity Prediction

Sufficient dimension reduction for feature matrices

no code implementations7 Mar 2023 Chanwoo Lee

We address the problem of sufficient dimension reduction for feature matrices, which arises often in sensor network localization, brain neuroimaging, and electroencephalography analysis.

Dimensionality Reduction

Smooth tensor estimation with unknown permutations

no code implementations8 Nov 2021 Chanwoo Lee, Miaoyan Wang

A phase transition phenomenon is revealed with respect to the smoothness threshold needed for optimal recovery.

Community Detection Denoising

Nonparametric Trace Regression in High Dimensions via Sign Series Representation

no code implementations4 May 2021 Chanwoo Lee, Lexin Li, Hao Helen Zhang, Miaoyan Wang

Trace regression is a widely used method to model effects of matrix predictors and has shown great success in matrix learning.

Matrix Completion Multi-Task Learning +2

Beyond the Signs: Nonparametric Tensor Completion via Sign Series

no code implementations NeurIPS 2021 Chanwoo Lee, Miaoyan Wang

A nonparametric approach to tensor completion is developed based on a new model which we coin as sign representable tensors.

Tensor denoising and completion based on ordinal observations

no code implementations ICML 2020 Chanwoo Lee, Miaoyan Wang

Higher-order tensors arise frequently in applications such as neuroimaging, recommendation system, social network analysis, and psychological studies.

Clustering Collaborative Filtering +1

Supervised tensor decomposition with features on multiple modes

no code implementations21 Oct 2019 Jiaxin Hu, Chanwoo Lee, Miaoyan Wang

Here, we develop a tensor decomposition method that incorporates multiple feature matrices as side information.

Dimensionality Reduction Tensor Decomposition

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