DocumentCode :
1856133
Title :
Model based probabilistic piecewise curve approximation
Author :
Siibakan, Y.C. ; Sankur, B.
Author_Institution :
Electr. & Electron. Eng., Bogazici Univ., Istanbul, Turkey
fYear :
2012
fDate :
27-31 Aug. 2012
Firstpage :
669
Lastpage :
673
Abstract :
In this work, we approach the piecewise curve approximation problem with a model-based probabilistic framework. For this purpose, we propose three different models. These models can be used for feature extraction or compression. The first model is a variant of the Bayesian regression model where we can parametrically alter the design matrix. The second model approaches the piecewise curve approximation as a clustering problem. The third model adds temporal connectivity to the second model and combines Hidden Markov models with linear regression. We run the first and the third models on a curve which is used to rank existing algorithms and show that our approaches outperforms its rivals. We also run our models on several real-life curves to show their capabilities.
Keywords :
Bayes methods; approximation theory; curve fitting; data compression; feature extraction; hidden Markov models; matrix algebra; pattern clustering; regression analysis; Bayesian regression model; clustering problem; design matrix; feature compression; feature extraction; hidden Markov model; linear regression; model-based probabilistic framework; piecewise curve approximation; temporal connectivity; Approximation algorithms; Approximation methods; Bayesian methods; Hidden Markov models; Splines (mathematics); Transmission line matrix methods; Vectors; Bayesian modeling; Curve segment clustering; Hidden Markov Models; Piecewise curve approximation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2012 Proceedings of the 20th European
Conference_Location :
Bucharest
ISSN :
2219-5491
Print_ISBN :
978-1-4673-1068-0
Type :
conf
Filename :
6334240
Link To Document :
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