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XIII International Conference on Applied Stochastic Models and Data Analysis, Vilnius : Lituanie (2009)
Clustering in Fisher Discriminative Subspaces
Charles Bouveyron 1, 2, Camille Brunet 3
(23/06/2009)

Clustering in high-dimensional spaces is nowadays a recurrent problem in many scientific domains but remains a difficult problem. This is mainly due to the fact that high-dimensional data usually live in low-dimensional subspaces hidden in the original space. This paper presents a model-based clustering approach which models the data in a discriminative subspace with an intrinsic dimension lower than the dimension of the original space. An estimation algorithm, called Fisher-EM algorithm, is proposed for estimating both the mixture parameters and the discriminative subspace. Experiments show that the proposed approach outperforms existing clustering methods and provides a useful representation of the high-dimensional data.
1 :  Statistique Appliquée et MOdélisation Stochastique (SAMOS)
Université Paris I - Panthéon-Sorbonne
2 :  Centre d'économie de la Sorbonne (CES)
CNRS : UMR8174 – Université Paris I - Panthéon-Sorbonne
3 :  Informatique, Biologie Intégrative et Systèmes Complexes (IBISC)
CNRS : FRE3190 – Université d'Evry-Val d'Essonne
Statistiques/Théorie

Mathématiques/Statistiques

Statistiques/Méthodologie

Statistiques/Machine Learning
Model-based clustering – dimension reduction – discriminative subspaces – latent mixture model
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