Small random initialization is akin to spectral learning: Optimization and generalization guarantees for overparameterized low-rank matrix reconstruction

D Stöger, M Soltanolkotabi - Advances in Neural …, 2021 - proceedings.neurips.cc
Recently there has been significant theoretical progress on understanding the convergence
and generalization of gradient-based methods on nonconvex losses with overparameterized …

[HTML][HTML] Low rank tensor recovery via iterative hard thresholding

H Rauhut, R Schneider, Ž Stojanac - Linear Algebra and its Applications, 2017 - Elsevier
We study extensions of compressive sensing and low rank matrix recovery (matrix
completion) to the recovery of low rank tensors of higher order from a small number of linear …

Guarantees of Riemannian optimization for low rank matrix recovery

K Wei, JF Cai, TF Chan, S Leung - SIAM Journal on Matrix Analysis and …, 2016 - SIAM
We establish theoretical recovery guarantees of a family of Riemannian optimization
algorithms for low rank matrix recovery, which is about recovering an m*n rank r matrix from …

Fast state tomography with optimal error bounds

M Guţă, J Kahn, R Kueng, JA Tropp - Journal of Physics A …, 2020 - iopscience.iop.org
Projected least squares is an intuitive and numerically cheap technique for quantum state
tomography: compute the least-squares estimator and project it onto the space of states. The …

Compressive statistical learning with random feature moments

R Gribonval, G Blanchard, N Keriven… - … Statistics and Learning, 2021 - ems.press
We describe a general framework—compressive statistical learning—for resourceefficient
large-scale learning: the training collection is compressed in one pass into a …

Gradient descent for deep matrix factorization: Dynamics and implicit bias towards low rank

HH Chou, C Gieshoff, J Maly, H Rauhut - Applied and Computational …, 2024 - Elsevier
In deep learning, it is common to use more network parameters than training points. In such
scenario of over-parameterization, there are usually multiple networks that achieve zero …

Recovering quantum gates from few average gate fidelities

I Roth, R Kueng, S Kimmel, YK Liu, D Gross, J Eisert… - Physical review …, 2018 - APS
Characterizing quantum processes is a key task in the development of quantum
technologies, especially at the noisy intermediate scale of today's devices. One method for …

Gridless line spectrum estimation and low-rank Toeplitz matrix compression using structured samplers: A regularization-free approach

H Qiao, P Pal - IEEE Transactions on Signal Processing, 2017 - ieeexplore.ieee.org
This paper considers the problem of compressively sampling wide sense stationary random
vectors with a low rank Toeplitz covariance matrix. Certain families of structured …

Robust nonnegative sparse recovery and the nullspace property of 0/1 measurements

R Kueng, P Jung - IEEE Transactions on Information Theory, 2017 - ieeexplore.ieee.org
We investigate recovery of nonnegative vectors from non-adaptive compressive
measurements in the presence of noise of unknown power. In the absence of noise, existing …

Mixing properties of stochastic quantum Hamiltonians

E Onorati, O Buerschaper, M Kliesch, W Brown… - … in mathematical physics, 2017 - Springer
Random quantum processes play a central role both in the study of fundamental mixing
processes in quantum mechanics related to equilibration, thermalisation and fast scrambling …