کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
563470 875498 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Unsupervised signal restoration using hidden Markov chains with copulas
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Unsupervised signal restoration using hidden Markov chains with copulas
چکیده انگلیسی

This paper deals with the statistical restoration of hidden discrete signals, extending the classical methodology based on hidden Markov chains. The aim is to take into account the hidden signal and complex relationships between the noises which can be from different parametric models, non-independent, and of class-varying nature. We discuss some possibilities of managing it using copulas. Further, we propose a parameter estimation method and apply resulting unsupervised restoration methods in variety of situations. It is also validated by experiments performed in supervised and unsupervised context.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 85, Issue 12, December 2005, Pages 2304–2315
نویسندگان
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