Title :
A mean shift algorithm for manifolds of exponential families
Author :
Stafylakis, Themos ; Katsouros, Vassilis ; Kenny, Patrick ; Dumouchel, Pierre
Author_Institution :
Ecole de Technol. Super. (ETS), Quebec City, QC, Canada
Abstract :
This paper provides the theory and the machinery for the generalization of the celebrated mean-shift algorithm to exponential families. We show that the baseline version of the algorithm is a special case of the proposed one, the one formed by the multivariate normal exponential family with known covariance matrix. With the proposed generalization, we will be capable of clustering entities that lie on other probabilistic manifolds, and hence to increasing its applicability significantly. An example is given for the problem of speaker clustering.
Keywords :
covariance matrices; pattern clustering; probability; speech processing; clustering entities; covariance matrix; exponential family manifolds; mean shift algorithm; multivariate normal exponential family; probabilistic manifolds; speaker clustering; Clustering algorithms; Covariance matrix; Density estimation robust algorithm; Kernel; Manifolds; Signal processing algorithms; Smoothing methods;
Conference_Titel :
Information Science, Signal Processing and their Applications (ISSPA), 2012 11th International Conference on
Conference_Location :
Montreal, QC
Print_ISBN :
978-1-4673-0381-1
Electronic_ISBN :
978-1-4673-0380-4
DOI :
10.1109/ISSPA.2012.6310605