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Published in 2019 at "Numerische Mathematik"
DOI: 10.1007/s00211-019-01034-w
Abstract: We consider and analyze applying a spectral inverse iteration algorithm and its subspace iteration variant for computing eigenpairs of an elliptic operator with random coefficients. With these iterative algorithms the solution is sought from a…
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Keywords:
asymptotic convergence;
space;
convergence spectral;
eigenvalue ... See more keywords
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Published in 2020 at "Optimization"
DOI: 10.1080/02331934.2020.1772255
Abstract: In this work, we propose a new partially inexact Alternating Direction Method of Multipliers (ADMM) with relative error tolerance. This method departs from previous semi-inexact variants of the ADMM by allowing the second subproblem to…
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Keywords:
asymptotic convergence;
error tolerance;
relative error;
error ... See more keywords
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Published in 2017 at "Optimization Methods and Software"
DOI: 10.1080/10556788.2017.1296439
Abstract: Many recent applications in machine learning and data fitting call for the algorithmic solution of structured smooth convex optimization problems. Although the gradient descent method is a natural choice for this task, it requires exact…
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Keywords:
asymptotic convergence;
machine learning;
method;
non asymptotic ... See more keywords