Labjar - Researcher, Laboratory Processes and Environment, Faculty of Sciences and Technology, University Hassan II Casablanca, Mohammedia, Morocco.
Al-Sarem - Associate Professor, Information System Departement, Taibah University, Al-Madinah Al-Monawarah, Saudi Arabia.
Kissi - Full Professor, LIM Laboratory, Computer Science Department, Faculty of Sciences and Technology, University Hassan II Casablanca, Mohammedia, Morocco.

This paper presents an approach that uses both genetic algorithm (GA) and fuzzy inference system (FIS), for feature selection for descriptor in a quantitative structure activity relationships (QSAR) classification and prediction problem. Unlike the traditional techniques that employed GA, the FIS is used to evaluate an individual population in the GA process. So, the fitness function is introduced and defined by the error rate of the GA and FIS combination. The proposed approach has been implemented and tested using a data set with experimental value anti-human immunodeficiency virus (HIV) molecules. The statistical parameters q۲ (leave many out) is equal ۰.۵۹ and r (coefficient of correlation) is equal ۰.۹۸. These results reveal the capacity for achieving subset of descriptors, with high predictive capacity as well as the effectiveness and robustness of the proposed approach.

Feature Selection, Machine learning, Computational Chemistry, QSAR, Fuzzy logic, Genetic Algorithms