REPORTS AND PUBLICATIONS

•  F. Chaitin-Chatelin, V. Toumazou and E. Traviesas. Accuracy assessment for eigencomputations: Variety of backward errors ans speudospectra. Journal Linear Algebra and its Applications, vol. 309, pp. 73-83. Also available as CERFACS Technical Report TR/PA/99/03.

• V. Toumazou and E. Traviesas.A note on homotopic backward error and pseudospectra for the generalized eigenproblem. Available as CERFACS Technical Report TR/PA/99/14.

• F. Chaitin-Chatelin and E. Traviesas. PRECISE, a toolbox for assessing the quality of numerical methods and software. Available as CERFACS technical Report TR/PA/00/12. To appear in the Proceedings of 16th IMACS World Congress, August 21-25, 2000, Lausanne, Switzerland. Special session on Recommender Systems (N. Ramakrishnan organizer).

 
• A. N. Zaoui and E. Traviesas.The hybrid eigensolver ISABeL to compute the r eigenvalues closest to a given complex point: a qualitative study. Available as CERFACS technical Report TR/PA/00/13. To appear in the Proceedings of 16th IMACS World Congress, August 21-25, 2000, Lausanne, Switzerland. Special session on Hybrid Algorithms (S. Petiton organizer).

 
• E. Traviesas. Sur le déploiement du champ spectral d'une matrice.

Ph.D. dissertation, Université Toulouse I, May 2000.
Keywords: Normwise and Homotopic perturbations, backward error and pseudospectrum, Arnoldi and GMRES methods, eigenvalue problem and linear system.
Jury: J. Fléckinger, P. Charrier (rapporteur), F. Dias D'almeida (rapporteur), F. Chaitin-Chatelin, I. S. Duff, A. Ilahi, and B. N. Parlett,
TH/PA/00/30.
BibTeX entry, Compressed PS, PDF
 
• F. Chaitin-Chatelin, E. Traviesas and L. Plantie. Understanding Krylov methods in finite precision. Available as CERFACS Technical Report TR/PA/00/40. In Numerical Analysis and its Applications, NAA 2000 (L. Vulkov, J. Wasviewski, P. Yalamov eds), Springer Verlag, Lectures Notes in Computer Science, p. 187-197, 2000.

 
• A. N. Zaoui and E. Traviesas. Sur la fiabilité et la robustesse du code isabel.

Technical Report TR/PA/00/76, BibTeX entry, Compressed PS
 
• F. Chaitin-Chatelin, E. Traviesas, and A. Ilahi.Résolution géométrique d'une équation de degré 4 : Partie 1.

Working Notes WN/PA/01/01,
 Keywords: Parabole, hyperbole, équation de degré 4, étude asymptotique.
 BibTeX entry, Compressed PS, PDF
 
• C. Mandry and E. Traviesas. Convergence de la méthode d'Arnoldi en précision finie en fonction du vecteur initial.

Working Note WN/PA/01/36,
 Keywords: Méthode d'Arnoldi, erreur inverse, défaut d'orthogonalité.
 BibTeX entry, Compressed PS, PDF
 
• F. Chaitin-Chatelin and E. Traviesas. Homotopic perturbation: Unfolding the field of singularities of a matrix by a complex parameter.

Technical Report TR/PA/01/84,
Keywords: homotopic perturbations, Neumann series, spectral orbit, spectral ray, eigenvalue problem.
BibTeX entry, Compressed PS, PDF

• 2001 SIAM Annual Meeting, July 9-13, 2001, San Diego, USA. Talk about Finite Precision computations and the

Toolbox PRECISE, during the session on Accuracy and Reliability in Scientific Computing (Bo Einarson organizer).

• SMAI'01 Congress, at Pompadour, Coreze, France, on May 28-June 1, 2001:

- Decomposition de Hessenberg par la methode d'Arnoldi : Etude theorique, F. Chaitin-Chatelin, E. Traviesas, L. Plantie et
S. Gratton
- Decomposition de Hessenberg par la methode d'Arnoldi : Implantation logicielle, F. Chaitin-Chatelin, E. Traviesas, L. Plantie et C. Mandry.
Selected for the best poster price.

• 16th IMACS World Congress 2000 on Scientific Computing, Applied Mathematics and Simulation, August, 21-25, 2000, Lausanne, Switzerland:

- PRECISE, a toolbox for assessing the quality of numerical methods and software, F. Chaitin-Chatelin and E. Traviesas. Special Session on Recommender Systems.
- The hybrid eigensolver ISABeL to compute the r eigenvalues closest to a given complex point: a qualitative study, A. N. Zaoui and E. Traviesas. Special Session on Hybrid Algorithms.
 
• Workshop SEA 2000 at Universite Paul Sabatier, Toulouse, France on June 14-16, 2000: Talk about Homotopic perturbations and Arnoldi Method.

 
• Numerical Analysis Congress CANUM'00 in Port d'Albret, France on June 5-9, 2000: Poster session on the spectrum of a matrix and homotopic perturbations.

 
• Numerical Analysis Congress CANUM'99 in Ax-les-thermes, France on May 17-21, 1999: Poster session on the concergence of Krylov based method.

 
• Doctoriales in Boussens, France on November 29-December 4, 1998: Poster session about Qualitative Computing near a singularity.

• Journees EOF, Legos, CNES, May 2, 2001.

• EUROPAR'99 in Toulouse, France on September 3-8, 1999.

 
• NATO Advanced Study Institute about Error Control and Adaptivity in Scientific Computing on August, 9-21, 1998 in Antalya, Turkey.

 
• PINEAPL Workshop - A Workshop on the Use of Parallel Numerical Libraries in Industrial End-User Applications on February, 9-10, 1998 in Toulouse, France.

 
• Workshop on iterative methods during the International Linear Algebra Year on June 10-13, 1996 in Toulouse, France.

 

• October 1997 - May 2000: Ph. D at CERFACS and Universite Toulouse 1, France. Completed and defended on May 16, 2000. Title :
Sur le deploiement du champ spectral d'une matrice
Mention tres honorable.
 
• Since October 1998: Supervised sessions at the Universite des Sciences Sociales, Toulouse, France in Analysis and Linear Algebra (3 hours per week) for students in first year of D.E.U.G. Sciences Economiques.

 
• February-June 1997: Research trainee for D.E.A. (University of Bordeaux 1) at CERFACS, Toulouse, France: "Loss of orthogonality and backward error analysis for Krylov based methods for linear systems and eigenproblems".Part 1 , Part 2 , Part 3.

 
• May-July 1996: Research trainee for third yearI.U.P. (University Paul Sabatier, Toulouse 3), at CERFACS, Toulouse, France: "Conditioning of the Cholesky factorization - Backward error analysis of the Lanczos method applied to classical and generalized eigenproblem". Trainee report

• September 1996 - June 1997: D.E.A. (Diplome d'Etudes Approfondies): Applied Mathematics and Scientific Computing, Universite de Bordeaux 1, France. Mention Assez Bien.

 
• September 1995 - June 1996: Maitrise in Mathematical Engineering and Computer Science (option Scientific Computing), Institut Universitaire Professionnalise, Universite Paul Sabatier, France. Mention Assez Bien.

• Unix Scheme, Windows

 
• C, Fortran, LaTeX, html

 
• Maple, Matlab, Mathematica

French, Spanish, English

• Member of the Scientific and Organizational Commitee for Industrial Days on inner-outer iterations, September 11-12, 2000.

• Responsibility of the web site http://www.cerfacs.fr/~algor/qualitative of the Qualitative Computing  Group in the Parallel Algorithms Project, at CERFACS.

 
• Joint-Reponsibility of the web site http://www.cerfacs.fr/algor of the Parallel Algorithms Project, at CERFACS

 
• Joint-Reponsibility of the cafeteria at CERFACS: maintenance service, management...

 

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