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02/02/2023
Implicit regularization in Heavy-ball momentum accelerated stochastic gradient descent
It is well known that the finite step-size (h) in Gradient Descent (GD) ...
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02/28/2022
Perturbation of invariant subspaces for ill-conditioned eigensystem
Given a diagonalizable matrix A, we study the stability of its invariant...
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11/16/2020
An exact sinΘ formula for matrix perturbation analysis and its applications
Singular vector perturbation is an important topic in numerical analysis...
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05/18/2020
Sigma Delta quantization for images
In this paper, we propose the first adaptive quantization method for dir...
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11/10/2019