Spatial dependence in credit risk and its improvement in credit scoring
•We discuss the local economy impact on SMEs’ credit risk.•We propose using kriging methods to incorporate the spatial dependence among firms.•We make the comparison with traditional techniques based on zip code grouping.•The proposed methodology increases the discrimination power in 6 points of Gin...
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| Published in | European journal of operational research Vol. 249; no. 2; pp. 517 - 524 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Amsterdam
Elsevier B.V
01.03.2016
Elsevier Sequoia S.A |
| Subjects | |
| Online Access | Get full text |
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| Abstract | •We discuss the local economy impact on SMEs’ credit risk.•We propose using kriging methods to incorporate the spatial dependence among firms.•We make the comparison with traditional techniques based on zip code grouping.•The proposed methodology increases the discrimination power in 6 points of Gini.•We argue about the robustness of the proposed methodology over zip code grouping.
Credit scoring models are important tools in the credit granting process. These models measure the credit risk of a prospective client based on idiosyncratic variables and macroeconomic factors. However, small and medium sized enterprises (SMEs) are subject to the effects of the local economy. From a data set with the localization and default information of 9 million Brazilian SMEs, provided by Serasa Experian (the largest Brazilian credit bureau), we propose a measure of the local risk of default based on the application of ordinary kriging. This variable has been included in logistic credit scoring models as an explanatory variable. These models have shown better performance when compared to models without this variable. A gain around 7 percentage points of KS and Gini was observed. |
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| AbstractList | •We discuss the local economy impact on SMEs’ credit risk.•We propose using kriging methods to incorporate the spatial dependence among firms.•We make the comparison with traditional techniques based on zip code grouping.•The proposed methodology increases the discrimination power in 6 points of Gini.•We argue about the robustness of the proposed methodology over zip code grouping.
Credit scoring models are important tools in the credit granting process. These models measure the credit risk of a prospective client based on idiosyncratic variables and macroeconomic factors. However, small and medium sized enterprises (SMEs) are subject to the effects of the local economy. From a data set with the localization and default information of 9 million Brazilian SMEs, provided by Serasa Experian (the largest Brazilian credit bureau), we propose a measure of the local risk of default based on the application of ordinary kriging. This variable has been included in logistic credit scoring models as an explanatory variable. These models have shown better performance when compared to models without this variable. A gain around 7 percentage points of KS and Gini was observed. Credit scoring models are important tools in the credit granting process. These models measure the credit risk of a prospective client based on idiosyncratic variables and macroeconomic factors. However, small and medium sized enterprises (SMEs) are subject to the effects of the local economy. From a data set with the localization and default information of 9 million Brazilian SMEs, provided by Serasa Experian (the largest Brazilian credit bureau), we propose a measure of the local risk of default based on the application of ordinary kriging. This variable has been included in logistic credit scoring models as an explanatory variable. These models have shown better performance when compared to models without this variable. A gain around 7 percentage points of KS and Gini was observed. |
| Author | Fernandes, Guilherme Barreto Artes, Rinaldo |
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| Keywords | Spatial dependence SME credit risk Risk analysis Ordinary kriging Credit scoring |
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| Snippet | •We discuss the local economy impact on SMEs’ credit risk.•We propose using kriging methods to incorporate the spatial dependence among firms.•We make the... Credit scoring models are important tools in the credit granting process. These models measure the credit risk of a prospective client based on idiosyncratic... |
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| SubjectTerms | Credit risk Credit scoring Default Mathematical models Ordinary kriging Risk analysis Small & medium sized enterprises-SME SME credit risk Spatial dependence Studies |
| Title | Spatial dependence in credit risk and its improvement in credit scoring |
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