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Dive into the research topics where Gianni Codevico is active.

Publication


Featured researches published by Gianni Codevico.


Numerical Algorithms | 2003

Solving Toeplitz Least Squares Problems by Means of Newton's Iteration

Dario Andrea Bini; Gianni Codevico; Marc Van Barel

We extend the algorithm of [4], based on Newtons iteration and on the concept of ε-displacement rank, to the computation of the generalized inverse A+ of an m×n Toeplitz matrix A. We introduce new strategies for the dynamical control of the truncation level ε at each step of the iteration. Numerical experiments and an application to a problem of image restoration are shown. An object-oriented implementation in C++ is described.


Archive | 2008

Semiseparable Matrices and the Symmetric Eigenvalue Problem

Marc Van Barel; Raf Vandebril; Gianni Codevico; Ellen Van Camp; Steven Delvaux; Nicola Mastronardi


Archive | 2002

An adaptation of the Newton iteration method to solve symmetric positive definite Toeplitz systems

Marc Van Barel; Gianni Codevico


Archive | 2003

Newton-like iteration for general and structured matrices

Gianni Codevico; Victor Y. Pan; Marc Van Barel; Xinmao Wang; Ai-Long Zheng


IMS2004 Proceedings | 2004

The least squares compression policy for Newton-like iteration of structured matrices

Gianni Codevico; Victor Y. Pan; Marc Van Barel; Xinmao Wang; Ai-Long Zheng


Archive | 2005

Superfast split algorithms for real symmetric Toeplitz systems

Georg Heinig; Gianni Codevico; Marc Van Barel


Proceedings of the Sixteenth International Symposium on Mathematical Theory of Networks and Systems | 2004

A superfast solver for real symmetric Toeplitz systems using real trigonometric transformations

Marc Van Barel; Gianni Codevico; Georg Heinig


Archive | 2004

A new superfast solver for real centro-symmetric Toeplitz-plus-Hankel systems using real trigonometric transformations

Gianni Codevico; Marc Van Barel; Georg Heinig


Archive | 2004

Recursive and/or iterative refinement for a superfast solver for real symmetric Toeplitz systems based on real trigonometric transformations

Marc Van Barel; Gianni Codevico; Georg Heinig


Archive | 2004

High-performance numerical software for structured matrix computations

Gianni Codevico; Marc Van Barel

Collaboration


Dive into the Gianni Codevico's collaboration.

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Marc Van Barel

Catholic University of Leuven

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Victor Y. Pan

City University of New York

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Xinmao Wang

City University of New York

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Ai-Long Zheng

City University of New York

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Ellen Van Camp

Katholieke Universiteit Leuven

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Nicola Mastronardi

Katholieke Universiteit Leuven

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Raf Vandebril

Katholieke Universiteit Leuven

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Steven Delvaux

Katholieke Universiteit Leuven

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