Bayesian inference over ICA models: application to multibiometric score fusion with quality estimates |
| |
| Authors: | A Rouigueb S Chitroub A Bouridane |
| |
| Institution: | 1. Computer Science Department, Ecole Militaire Polytechnique, Algiers, Algeria;2. Electronics and Computer Science Faculty, University of Science and Technology of Houari Boumedienne (U.S.T.H.B), Algiers, Algeria;3. Electronics and Computer Science Faculty, University of Science and Technology of Houari Boumedienne (U.S.T.H.B), Algiers, Algeria;4. School of Computing, Engineering and Information Sciences, Northumbria University at Newcastle, Pandon Building, Newcastle Upon Tyne, UK |
| |
| Abstract: | Bayesian networks are not well-formulated for continuous variables. The majority of recent works dealing with Bayesian inference are restricted only to special types of continuous variables such as the conditional linear Gaussian model for Gaussian variables. In this context, an exact Bayesian inference algorithm for clusters of continuous variables which may be approximated by independent component analysis models is proposed. The complexity in memory space is linear and the overfitting problem is attenuated, while the inference time is still exponential. Experiments for multibiometric score fusion with quality estimates are conducted, and it is observed that the performances are satisfactory compared to some known fusion techniques. |
| |
| Keywords: | independent component analysis Bayesian inference multibiometric score fusion quality estimates computational geometry |
|
|
