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- W2886014727 abstract "With the development of statistical methods and machine learning algorithms, credit scoring is no longer a task merely based on experience. From single base classifiers to ensemble classifiers and hybrid models, researches have been focusing on combining classifiers and hybridizing with artificial intelligence algorithms to improve performance of the models. Ensemble classifiers have been proven to have a better predictive accuracy than single classifiers, but the method of ensemble affects performance and is worth studying. This study is based on the ensemble of five of the most widely recognized base classifiers in credit scoring, i.e. logistic regression, support vector machine, neural network, gradient boosting decision tree and random forest. It proposes a new method of selecting classifiers using Genetic Algorithm after they are trained, considering both the accuracy and diversity of the ensemble. Besides, unsupervised clustering is integrated with a fuzzy assignment procedure in the model, to make more use of the data pattern and improve performance. The proposed CF-GA-Ens model is tested on three credit scoring datasets (Australian, German, Japanese) and three performance measures (accuracy, AUC, F-score), and the results show that our classifier selection and clustering procedures have a positive impact on all performance measures." @default.
- W2886014727 created "2018-08-22" @default.
- W2886014727 creator A5004517421 @default.
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- W2886014727 date "2018-11-01" @default.
- W2886014727 modified "2023-10-18" @default.
- W2886014727 title "Classifier selection and clustering with fuzzy assignment in ensemble model for credit scoring" @default.
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- W2886014727 doi "https://doi.org/10.1016/j.neucom.2018.07.070" @default.
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