Frederic Desobry

Degrees

• 09/2004: Ph.D. degree, École Centrale Nantes, IRCCYN, France.
• 09/2001: M. Eng. degree, École Centrale Nantes, France.

Research Interests

• Reproducing kernel Hilbert spaces (rkhs) and kernel rules methods.
• Classification, set estimation; outlier detection, change detection.
  
• Nonparametric statistics with applications in signal processing and machine learning.

Publications

Misc.

Reduced kernel rules for nonparametric classification, Technical Report, Cambridge University TR-571, January 2007.
New plug-in kernel estimators for nonparametric classification, submitted.
New plug-in rules for the estimation of density level sets; an application to novelty detection, in preparation.
A density level set approach for the detection of changes in time-series , in preparation.


Journal papers

An online kernel change detection algorithm, IEEE Transactions on Signal Processing, Volume 53, Issue 8 (Part 2), pp. 2961--2974, August 2005 (with M. Davy and C. Doncarli).
An online Support Vector Machine for abnormal events detection, Signal Processing, Volume 86, Issue 8, pp. 2009--2025, August 2006 (with M. Davy, A. Gretton and C. Doncarli).

Conference papers

Détection de ruptures en ligne par estimateur SVM de support de densité, 19ème Colloque GRETSI, 8-11 September 2003, Paris (with M. Davy).
Support Vector-based online detection of abrupt changes, IEEE ICASSP 2003, Hong-Kong, China, April 2003 (with M. Davy).
Online one-class nu-SVM, an application to signal segmentation, IEEE ICASSP, Hong-Kong, 2003 (with A. Gretton).
Dissimilarity measures in feature space, IEEE ICASSP 2004 , Montreal, Canada, May 2004 (with M. Davy).
A Class of Kernels for Sets of Vectors, ESANN 2005, Brugge, Belgium, April 2005 (with M. Davy and W.J. Fitzgerald).
Estimation of minimum measure sets in reproducing kernel Hilbert spaces and applications, IEEE ICASSP 2006, Toulouse, May 2006 (with M. Davy and S. Canu).
Kernel PCA based estimation of the mixing matrix in linear instantaneous mixtures of sparse sources, IEEE ICASSP 2006, Toulouse, France, May 2006 (with C. Févotte).
Density kernels on unordered sets for kernel-based signal processing, IEEE ICASSP 2007 (with M. Davy and W.J. Fitzgerald).


Theses

Kernel methods for change detection. PhD Thesis. University of Nantes and Ecole Centrale Nantes. 2004. (in French).
Audio watermarking. MSc Thesis. Ecole Centrale Nantes. 2001. (in French).

Contact Details

Frederic Desobry


e-mail : fd238 at cam dot ac dot uk