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dc.contributor.authorSakr, Nizar
dc.contributor.authorAlsulaiman, Fawaz
dc.contributor.authorValdés, Julio
dc.contributor.authorEl Saddik, Abdulmotaleb
dc.contributor.authorGeorganas, Nicolas
dc.description.abstractIn this paper, a study is conducted in order to explore the use of genetic programming, in particular gene expression programming (GEP), in finding analytic functions that can behave as classifiers in high-dimensional haptic feature spaces. More importantly, the determined explicit functions are used in discovering minimal knowledge-preserving subsets of features from very high dimensional haptic datasets, thus acting as general dimensionality reducers. This approach is applied to the haptic-based biometrics problem; namely, in user identity verification. GEP models are initially generated using the original haptic biometric datatset, which is imbalanced in terms of the number of representative instances of each class. This procedure was repeated while considering an undersampled (balanced) version of the datasets. The results demonstrated that for all datasets, whether imbalanced or undersampled, a certain number (on average) of perfect classification models were determined. In addition, using GEP, great feature reduction was achieved as the generated analytic functions (classifiers) exploited only a small fraction of the available features.
dc.subject.lccQ Science::Q Science (General)
dc.subject.lccQ Science::QA Mathematics::QA75 Electronic computers. Computer science
dc.subject.lccT Technology::T Technology (General)
dc.subject.lccT Technology::TA Engineering (General). Civil engineering (General)
dc.subject.lccT Technology::TK Electrical engineering. Electronics Nuclear engineering
dc.titleRelevant Feature Selection and Generation in High Dimensional Haptic-based Biometric Data
dc.typeconference object
dc.conference.date13-16 July, 2009
dc.conference.placeLas Vegas, Nevada, USA
dc.conference.titleThe 5th International Conference on Data Mining (DMIN 09)*

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