Evolutionary Ensemble Approach for Behavioral Credit Scoring

This paper is concerned with the question of potential quality of scoring models that can be achieved using not only application form data but also behavioral data extracted from the transactional datasets. The several model types and a different configuration of the ensembles were analyzed in a set of experiments. Another aim of the research is to prove the effectiveness of evolutionary optimization of an ensemble structure and use it to increase the quality of default prediction. The example of obtained results is presented using models for borrowers default prediction trained on the set of features (purchase amount, location, merchant category) extracted from a transactional dataset of bank customers.