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Enhanced decision support in credit scoring using Bayesian binary quantile regression

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Abstract
Fierce competition as well as the recent financial crisis in financial and banking industries made credit scoring gain importance. An accurate estimation of credit risk helps organizations to decide whether or not to grant credit to potential customers. Many classification methods have been suggested to handle this problem in the literature. This paper proposes a model for evaluating credit risk based on binary quantile regression, using Bayesian estimation. This paper points out the distinct advantages of the latter approach: that is (i) the method provides accurate predictions of which customers may default in the future, (ii) the approach provides detailed insight into the effects of the explanatory variables on the probability of default, and (iii) the methodology is ideally suited to build a segmentation scheme of the customers in terms of risk of default and the corresponding uncertainty about the prediction. An often studied dataset from a German bank is used to show the applicability of the method proposed. The results demonstrate that the methodology can be an important tool for credit companies that want to take the credit risk of their customer fully into account.
Keywords
VECTOR MACHINES, WAGE STRUCTURE, ALGORITHMS, EXTENSION, RISK. credit scoring, quantile regression, classification, Bayesian estimation, Markov Chain Monte Carlo

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Chicago
Miguéis, Vera, Dries Benoit, and Dirk Van den Poel. 2013. “Enhanced Decision Support in Credit Scoring Using Bayesian Binary Quantile Regression.” Journal of the Operational Research Society 64 (9): 1374–1383.
APA
Miguéis, V., Benoit, D., & Van den Poel, D. (2013). Enhanced decision support in credit scoring using Bayesian binary quantile regression. JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY, 64(9), 1374–1383.
Vancouver
1.
Miguéis V, Benoit D, Van den Poel D. Enhanced decision support in credit scoring using Bayesian binary quantile regression. JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY. 2013;64(9):1374–83.
MLA
Miguéis, Vera, Dries Benoit, and Dirk Van den Poel. “Enhanced Decision Support in Credit Scoring Using Bayesian Binary Quantile Regression.” JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY 64.9 (2013): 1374–1383. Print.
@article{4116934,
  abstract     = {Fierce competition as well as the recent financial crisis in financial and banking industries made credit scoring gain importance. An accurate estimation of credit risk helps organizations to decide whether or not to grant credit to potential customers. Many classification methods have been suggested to handle this problem in the literature. This paper proposes a model for evaluating credit risk based on binary quantile regression, using Bayesian estimation. This paper points out the distinct advantages of the latter approach: that is (i) the method provides accurate predictions of which customers may default in the future, (ii) the approach provides detailed insight into the effects of the explanatory variables on the probability of default, and (iii) the methodology is ideally suited to build a segmentation scheme of the customers in terms of risk of default and the corresponding uncertainty about the prediction. An often studied dataset from a German bank is used to show the applicability of the method proposed. The results demonstrate that the methodology can be an important tool for credit companies that want to take the credit risk of their customer fully into account.},
  author       = {Miguéis, Vera and Benoit, Dries and Van den Poel, Dirk},
  issn         = {0160-5682},
  journal      = {JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY},
  keywords     = {VECTOR MACHINES,WAGE STRUCTURE,ALGORITHMS,EXTENSION,RISK. credit scoring,quantile regression,classification,Bayesian estimation,Markov Chain Monte Carlo},
  language     = {eng},
  number       = {9},
  pages        = {1374--1383},
  title        = {Enhanced decision support in credit scoring using Bayesian binary quantile regression},
  url          = {http://dx.doi.org/10.1057/jors.2012.116},
  volume       = {64},
  year         = {2013},
}

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