Chapter 16. ICA with Overcomplete Bases
Published Online: 15 MAY 2002
Copyright © 2001 John Wiley & Sons, Inc.
Independent Component Analysis
How to Cite
Hyvärinen, A., Karhunen, J. and Oja, E. (2001) ICA with Overcomplete Bases, in Independent Component Analysis, John Wiley & Sons, Inc., New York, USA. doi: 10.1002/0471221317.ch16
- Published Online: 15 MAY 2002
- Published Print: 21 MAY 2001
Book Series Editors:
- Simon Haykin
Print ISBN: 9780471405405
Online ISBN: 9780471221319
- independent component analysis (ICA);
- overcomplete bases;
- mixing matrix
The ICA problem becomes much more complicated if there are more independent components than observed mixtures. Basic ICA methods cannot be used as such. In most practical applications, it may be more useful to use the basic ICA model as an approximation of the overcomplete basis model, because the estimation of the basic model can be performed with reliable and efficient algorithms.