TELKOMNIKA (Telecommunication Computing Electronics and Control)
Vol 22, No 3: June 2024

A stacking ensemble model with SMOTE for improved imbalanced classification on credit data

Nur Alamsyah (Universitas Informatika Dan Bisnis Indonesia)
Budiman Budiman (Universitas Informatika Dan Bisnis Indonesia)
Titan Parama Yoga (Universitas Informatika Dan Bisnis Indonesia)
R. Yadi Rakhman Alamsyah (Universitas Informatika Dan Bisnis Indonesia)



Article Info

Publish Date
27 Feb 2024

Abstract

This research is based on a significant problem in credit risk analysis in the banking sector caused by class imbalance. We face the problem of the model’s inability to accurately identify risks in the ‘‘Charged Off’’ class. As a solution, we propose a stacked ensemble approach that utilizes synthetic minority over-sampling technique (SMOTE) to balance the class distribution. Experiments were conducted by applying SMOTE to the training data before training the credit model using gradient boosting (XGBoost) and random forest (RF) algorithms in a single ensemble. The results show significant improvements in precision, recall, and F1-score after applying SMOTE on the unbalanced classes. The updated model achieved a striking accuracy rate of 0,97 on resampled training data. This re-search clearly identifies the problem of class imbalance as a major challenge in credit risk analysis. The application of SMOTE in a stacked ensemble was found to be effective in improving model performance, making a valuable contribution to the development of more reliable credit models for better risk management and revenue generation in financial institutions.

Copyrights © 2024






Journal Info

Abbrev

TELKOMNIKA

Publisher

Subject

Computer Science & IT

Description

Submitted papers are evaluated by anonymous referees by single blind peer review for contribution, originality, relevance, and presentation. The Editor shall inform you of the results of the review as soon as possible, hopefully in 10 weeks. Please notice that because of the great number of ...