activity
20172020
most citedModel-free Nonconvex Matrix Completion: Local Minima Analysis and Applications in Memory-efficient Kernel PCA

14 citations · 24 across the 3 of their papers we have counts for

collaborators

3 papers

math.ST2020★ 1 cited

Nonconvex Matrix Completion with Linearly Parameterized Factors

Ji Chen, Xiaodong Li, Zongming Ma

Techniques of matrix completion aim to impute a large portion of missing entries in a data matrix through a small portion of observed ones. In practice including collaborative filt…

stat.ML2019★ 9 cited

Nonconvex Rectangular Matrix Completion via Gradient Descent without Regularization

Ji Chen, Dekai Liu, Xiaodong Li

The analysis of nonconvex matrix completion has recently attracted much attention in the community of machine learning thanks to its computational convenience. Existing analysis on…

math.OC2017★ 14 cited

Model-free Nonconvex Matrix Completion: Local Minima Analysis and Applications in Memory-efficient Kernel PCA

Ji Chen, Xiaodong Li

This work studies low-rank approximation of a positive semidefinite matrix from partial entries via nonconvex optimization. We characterized how well local-minimum based low-rank f…