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math.ST2025
Low-Rank Tensor Estimation from Nonlinear Observations: A Unified Framework
Junren Chen, Lijun Ding, Dong Xia +1
We consider the estimation of a tensor of Tucker rank from the nonlinear observations $\{y_i=f_i(\langle A_i,X^\star\rangle)\}_{…
cs.LG2025
Interpretable Time Series Autoregression for Periodicity Quantification
Xinyu Chen, Vassilis Digalakis, Lijun Ding +2
Time series autoregression (AR) is a classical tool for modeling auto-correlations and periodic structures in real-world systems. We revisit this model from an interpretable machin…
math.OC2025
New Understandings and Computation on Augmented Lagrangian Methods for Low-Rank Semidefinite Programming
Lijun Ding, Haihao Lu, Jinwen Yang
Augmented Lagrangian Method (ALM) combined with Burer-Monteiro (BM) factorization, dubbed ALM-BM, offers a powerful approach for solving large-scale low-rank semidefinite programs…