no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Patrice Aknin, Gérard Govaert
Comparisons with existing approaches for time series clustering, including the stand EM for Gaussian mixtures, $K$-means clustering, the standard mixture of regression models and mixture of Hidden Markov Models, demonstrate the effectiveness of the proposed approach.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
A new approach for signal parametrization, which consists of a specific regression model incorporating a discrete hidden logistic process, is proposed.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
The parameters of the hidden logistic process, in the inner loop of the EM algorithm, are estimated using a multi-class Iterative Reweighted Least-Squares (IRLS) algorithm.
no code implementations • 25 Dec 2013 • Raïssa Onanena, Faicel Chamroukhi, Latifa Oukhellou, Denis Candusso, Patrice Aknin, Daniel Hissel
This paper describes a pattern recognition approach aiming to estimate fuel cell duration time from electrochemical impedance spectroscopy measurements.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
This paper proposes a method of segmenting temporal data into ordered classes.
no code implementations • 25 Dec 2013 • Allou Samé, Faicel Chamroukhi, Gérard Govaert, Patrice Aknin
The proposed approach can also be regarded as a clustering approach which operates by finding groups of time series having common changes in regime.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
A non linear regression approach which consists of a specific regression model incorporating a latent process, allowing various polynomial regression models to be activated preferentially and smoothly, is introduced in this paper.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
A new approach for functional data description is proposed in this paper.
no code implementations • 25 Dec 2013 • Faicel Chamroukhi, Allou Samé, Gérard Govaert, Patrice Aknin
A new approach for time series modeling is proposed in this paper.