Information-theoretic feature extraction and selection for robust classification

Chandra Shekhar Dhir; Soo Young Lee

doi:10.1117/12.822569

19 March 2009 Information-theoretic feature extraction and selection for robust classification

Chandra Shekhar Dhir, Soo Young Lee

Proceedings Volume 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII; 73430H (2009) https://doi.org/10.1117/12.822569
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

Classification performance of recognition tasks can be improved by selection of highly discriminative features from the low-dimensional linear representation of data. High-dimensional multivariate data can be represented in lower dimensions by unsupervised feature extraction techniques which attempts to remove the redundancy in the data and/or resolve the multivariate prediction problems. These extracted low-dimensional features of raw data may not ensure good class discrimination, therefore, supervised feature selection methods motivated by information-theoretic approaches can improve the recognition performance with lesser number of features. Proposed hybrid feature selection methods efficiently selects features with higher class discrimination in comparison to feature-class mutual information (MI), Fisher criterion or unsupervised selection using variance; thus, resulting in much improved recognition performance. Feature-class MI criterion and hybrid feature selection methods are computationally scalable and optimal selectors for statistically independent features.

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Chandra Shekhar Dhir and Soo Young Lee "Information-theoretic feature extraction and selection for robust classification", Proc. SPIE 7343, Independent Component Analyses, Wavelets, Neural Networks, Biosystems, and Nanoengineering VII, 73430H (19 March 2009); https://doi.org/10.1117/12.822569

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KEYWORDS

Feature selection

Independent component analysis

Feature extraction

Principal component analysis

Databases

Statistical analysis

Facial recognition systems

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