Independent Component Analysis (ICA): Algorithms, Applications and Ambiguities

Addisson Salazar and Luis Vergara (Editors)
Institute of Telecommunications and Multimedia Applications, ITEAM, Universitat Politècnica de València, Valencia, Spain

Series: Computer Science, Technology and Applications
BISAC: MAT009000

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Modern treatment of data requires powerful tools that allow the possible valuable contents of that data to be thoroughly understood and exploited. From the plethora of techniques proposed to achieve those objectives, the independent component analysis (ICA) has emerged as a flexible and efficient approach to model and characterize arbitrary data densities. Considering adequate data preprocessing, ICA can be implemented for any kind of data including imaging; biomedical signals; telecommunication data; and web data. In this framework, this book embraces a significant vision of ICA that presents innovative theoretical and practical approaches. ICA has been increasingly studied as a suitable method for many applications where available data describe complex geometries. Thus, this book aims to be an updated and advanced source of knowledge to solve real-world problems efficiently based on ICA. In contrast to classical time and frequency domain filtering, ICA has been proposed as a statistical filtering tool considering the observed data as mixtures of hidden non-Gaussian distributions called sources. Those sources extracted by ICA can be related with meaningful information about the origin of the data and for data detection/classification. Therefore, the successful of ICA has been widely demonstrated in challenging blind source separation (BSS), feature extraction, and pattern recognition tasks.

The suitability of ICA for a given problem of data analysis can be posed from different perspectives considering the physical interpretation of the phenomenon under analysis: (i) Estimation of the probability density of multivariate data without physical meaning; (ii) learning of some bases (usually called activation functions), which are more or less connected to the actual behaviors that are implicit in the physical phenomenon; and (iii) to identify where sources are originated and how they mix before arriving to the sensors to provide a physical explanation of the linear mixture model. In any case, even though the complexity of the problem constrains a physical interpretation, ICA can be used as a general-purpose data mining technique. The chapters that compose this book are written by premier researchers that present enlightening discussions, convincing demonstrations, and guidelines for future directions of research. The contents of this book span biomedical signal processing, dynamic modeling, next generation wireless communication, and sound and ultrasound signal processing. It also includes comprehensive works based on the related ICA techniques known as bounded component analysis (BCA) and non-negative matrix factorization (NMF).

Preface

Chapter 1. Independent Component Analysis
(Addisson Salazar, Gonzalo Safont and Luis Vergara, Institute of Telecommunications and Multimedia Applications, ITEAM, Universitat Politècnica de València, Valencia, Spain)

Chapter 2. Applications of ICA to Biomedical Signals
(José J. Rieta and Raúl Alcaraz, BioMIT.org, Electronic Engineering Department, Universitat Politècnica de València, Spain)

Chapter 3. Performance Assessment in Biomedical Applications
(Francisco Castells, Luis Omar Sarmiento and José Millet, ITACA Institute, Universitat Politècnica de València, Spain)

Chapter 4. Independent Component Analysis and Infrared Spectroscopy for the Investigation of the Structural and Molecular Characteristics of Marine Mollusc Shells
(Mauro Mecozzi, Paolo Tomassetti, Danilo Vani, Marco Pietroletti, Fabrizio Novelli and Yulia B. Monakhova, Laboratory of Chemometrics and Environmental Applications, ISPRA, Rome, Italy, and others)

Chapter 5. Dynamic Modeling Using Independent Component Analysis
(Gonzalo Safont, Addisson Salazar and Luis Vergara, Institute of Telecommunications and Multimedia Applications, ITEAM, Universitat Politècnica de València, Valencia, Spain)

Chapter 6. Bounded Component Analysis: Theory and Applications in Next Generation Wireless Communications
(Pablo Aguilera, PhD, Galgus Research Department, Camas, Seville, Spain)

Chapter 7. Non-Negative Matrix Factorization (NMF) Applied to Monaural Audio Signal Processing
(J. J. Carabias-Orti, F. J. Canadas-Quesada, P. Vera-Candeas and N. Ruiz-Reyes, Telecommunication Engineering Department, University of Jaen, Spain)

Index

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