The Changing Landscape of Financial Credit Risk Models
Abstract
:1. Introduction and Motivation
2. Machine Learning
2.1. Role and Impact
2.2. Challenges and Opportunities
2.3. Overlap
3. Financial Crises
3.1. Role and Impact
3.2. Challenges and Opportunities
4. Financial Technology
4.1. Role and Impact
4.2. Challenges and Opportunities
5. Summary of Challenges and Opportunities
6. Industry Collaboration
6.1. Industry-Focused Training
6.2. Example of Such an Industry-Focused Training
6.3. Opportunities and Possible Future Impact of Industry-Focused Training
6.4. Industry-Focused Research
6.5. Example of Industry-Focused Research
6.6. Opportunities and Possible Future Impact of Industry-Focused Research
7. Conclusions and Future Recommendations
Author Contributions
Funding
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
- 2U Inc. 2020. Data Science vs. Machine Learning. Masters in Data Science. Available online: https://www.mastersindatascience.org/learning/data-science-vs-machine-learning/ (accessed on 13 January 2022).
- ActEd. 2020. Subject CS2 Course Notes: Combined Materials Pack. London: The Actuarial Education Company. [Google Scholar]
- Alogoskoufis, Spyros, Nepomuk Dunz, Tina Emambakhsh, Tristan Hennig, Michiel Kaijser, Charalampos Kouratzoglou, Manuel Muñoz, Laura Parisi, and Carmelo Salleo. 2021. ECB Economy-Wide Climate Stress Test. Occasional Paper Series, No. 281: European Central Bank. Available online: https://www.ecb.europa.eu/pub/pdf/scpops/ecb.op281~05a7735b1c.en.pdf (accessed on 25 July 2022).
- Andersen, Lasse Berg, David Häger, Svein Maberg, Nils Bjørn Næss, and Morten Tungland. 2012. The financial crisis in an operational risk management context—A review of causes and influencing factors. Reliability Engineering & System Safety 105: 3–12. [Google Scholar] [CrossRef]
- Athari, Seyed Alireza, Dervis Kirikkaleli, Isah Wada, and Tomiwa Sunday Adebayo. 2021. Examining the Sectoral Credit-Growth Nexus in Australia: A Time and Frequency Dynamic Analysis. Economic Computation and Economic Cybernetics Studies and Research. Available online: https://ssrn.com/abstract=3993479 (accessed on 21 June 2023).
- Bazarbash, Majid. 2019. FinTech in Financial Inclusion: Machine Learning Applications in Assessing Credit Risk. Retrieved from International Monetary Fund (IMF) Working Paper WP/19/109. Available online: https://www.imf.org/~/media/Files/Publications/WP/2019/WPIEA2019109.ashx (accessed on 25 February 2023).
- Bell, Francesca, and Gary van Vuuren. 2022. The impact of climate risk on corporate credit risk. Cogent Economics & Finance 10: 1. [Google Scholar] [CrossRef]
- Bellini, Tiziano. 2019. IFRS 9 and CECL Credit Risk Modelling and Validation: A Practical Guide with Examples Worked in R and SAS, 1st ed. London: Elsevier. [Google Scholar]
- Blaschczok, Vinzent, Tanja Verster, and Alan Broderick. 2018. Review of innovations in the South African collection industry. South African Journal of Science 114: 25–33. [Google Scholar] [CrossRef] [PubMed] [Green Version]
- Breed, Douw Gerbrand, Tanja Verster, Willem Daniel Schutte, and Naeem Siddiqi. 2019. Developing an Impairment Loss Given Default Model Using Weighted Logistic Regression Illustrated on a Secured Retail Bank Portfolio. Risks 7: 123. [Google Scholar] [CrossRef]
- Breiman, Leo, Jerome Friedman, Richard Olsen, and Charles Stone. 1984. Classification and Regression Trees. Wadsworth: Pacific Grove. [Google Scholar]
- Brooke, Sophia. 2018. How Will Blockchain Make Predictive Analytics Accessible? Towards Data Science. Available online: https://towardsdatascience.com/how-will-blockchain-make-predictive-analytics-accessible-d256d543081d (accessed on 16 August 2022).
- Centre for BMI. 2022. Centre for Business Mathematics and Informatics. Available online: https://natural-sciences.nwu.ac.za/bmi (accessed on 16 August 2022).
- CGFS. 2017. FinTech Credit Market Structure, Business Models and Financial Stability Implications Report on FinTech Credit Market Structure, Business Models and Financial Stability Implications. Committee on the Global Financial System (CGFS) and the Financial Stability Board (FSB). Available online: https://www.bis.org/publ/cgfs_fsb1.pdf (accessed on 25 February 2023).
- Cheng, Aijun. 2023. Evaluating Fintech Industry’s Risks: A Preliminary Analysis Based on CRISP-DM Framework. Finance Research Letters 55, Pt B: 103966. [Google Scholar] [CrossRef]
- Claessens, Stijn, Luc Laeven, Deniz Igan, and Giovanni Dell’Ariccia. 2010. Lessons and Policy Implications From the Global Financial Crisis. IMF Working Papers. Washington, DC: International Monetary Fund, vol. 2010, pp. 1–40. [Google Scholar] [CrossRef]
- De Almeida Filho, Adiel Teixeira, Christophe Mues, and Lyn Thomas. 2010. Optimizing the Collections Process in Consumer Debt. Productions and Operations Management Society 19: 698–708. [Google Scholar] [CrossRef] [Green Version]
- De Jongh, Pieter Juriaan, and Cornelius Marthinus Erasmus. 2014. Industry-directed training and research programmes: The BMI experience. South African Journal of Science 110: 1–8. [Google Scholar] [CrossRef] [Green Version]
- De Jongh, Pieter Juriaan, Janette Larney, Eben Mare, Gary van Vuuren, and Tanja Verster. 2017. A proposed best practice model validation framework for banks. South African Journal of Economic and Management Sciences 20: 1–15. [Google Scholar] [CrossRef] [Green Version]
- Dendramis, Yiannis, Elias Tzavalis, and Georgios Adraktas. 2018. Credit risk modelling under recessionary and financially distressed conditions. Journal of Banking and Finance 91: 160–75. [Google Scholar] [CrossRef]
- EBA. 2021. EBA Discussion Paper on Machine Learning for IRB Models. European Banking Authority. Available online: https://www.eba.europa.eu/sites/default/documents/files/document_library/Publications/Discussions/2022/Discussion%20on%20machine%20learning%20for%20IRB%20models/1023883/Discussion%20paper%20on%20machine%20learning%20for%20IRB%20models.pdf (accessed on 22 July 2022).
- Efron, Bradley, and Trevor Hastie. 2016. Computer Age Statistical Inference: Algorithms, Evidence, and Data Science (Institute of Mathematical Statistics Monographs). Cambridge: Cambridge University Press. [Google Scholar] [CrossRef]
- Fagella, Daniel. 2020. EMERJ: The AI Research and Advisory Company—What Is Machine Learning? Available online: https://emerj.com/ai-glossary-terms/what-is-machine-learning/#:~:text=*%20%E2%80%9CMachine%20Learning%20is%20the%20science,and%20real%2Dworld%20interactions.%E2%80%9D (accessed on 28 October 2022).
- Fourie, Erika, Tanja Verster, and Gary van Vuuren. 2016. A proposed quantitative credit rating methodology for South African provincial departments. d quantitative credit rating methodology for South African provincial departments. SAJEMS (South African Journal of Economic and Management Sciences) 19: 192–214. [Google Scholar] [CrossRef]
- Gandal, Neil, and Hanna Halaburda. 2016. Can we predict the winner in a market with network effects? Competition in cryptocurrency market. Games 7: 16. [Google Scholar] [CrossRef] [Green Version]
- Halaburda, Hanna. 2017. Blockchain Revolution without the Blockchain? Communications of CACM 61: 7. [Google Scholar] [CrossRef] [Green Version]
- Hastie, Trevor, Rrobert Tibshirani, and Jermone Friedman. 2009. The Elements of Statistical Learning: Data Mining, Inference, and Prediction, 2nd ed. New York: Springer. [Google Scholar]
- Hodula, Martin. 2023. Interest rates as a finance battleground? The rise of Fintech and big tech credit providers and bank interest margin. Finance Research Letters 53: 103685. [Google Scholar] [CrossRef]
- Howat, Evelyn. 2020. What Is Fintech? Fintech Magazine. Available online: https://fintechmagazine.com/venture-capital/what-is-fintech (accessed on 23 November 2022).
- Human, Ansoné, Nantes Kirsten, Tanja Verster, and Willem Daniel Schutte. 2021. Surprise fraudsters before they surprise you: A South African telecommunications case study. Southern African Journal of Accountability and Auditing Research 23: 1. [Google Scholar] [CrossRef]
- IBM Cloud Education. 2020. Neural Networks. Available online: https://www.ibm.com/cloud/learn/neural-networks (accessed on 22 July 2022).
- IFRS. 2014. IRFS9 Financial Instruments: Project Summary. Available online: http://www.ifrs.org/Current-Projects/IASB-Projects/Financial-Instruments-A-Replacement-of-IAS-39-Financial-Instruments-Recognitio/Documents/IFRS-9-Project-Summary-July-2014.pdf (accessed on 31 January 2016).
- IFRS. 2020. IFRS 9 and COVID-19. Available online: https://www.ifrs.org/content/dam/ifrs/supporting-implementation/ifrs-9/ifrs-9-ecl-and-coronavirus.pdf (accessed on 25 November 2021).
- Joseph, Anthony, Maurice Larrain, and Eshwar Singh. 2011. Predictive Ability of the Interest Rate Spread Using Neural Networks. Procedia Computer Science 6: 207–12. [Google Scholar] [CrossRef] [Green Version]
- Kao, Shu-Chen. 2021. A crowdfunding prediction model: A data-driven approach. In The 8th Multidisciplinary International Social Networks Conference (MISNC2021). New York: ACM. [Google Scholar] [CrossRef]
- Karagiannopoulou, Sofia, Konstantina Rgazou, Ioannis Passas, Alexandros Garefalakis, and Nikolaos Sariannidis. 2023. The Impact of the COVID-19 Pandemic on the Volatility of Cryptocurrencies. International Journal of Financial Studies 11: 50. [Google Scholar] [CrossRef]
- Lawton, George, Joseph Michael Carew, and Ed Burns. 2022. What Is Predictive Modelling? TechTarget. Available online: https://www.techtarget.com/searchenterpriseai/definition/predictive-modeling (accessed on 28 November 2022).
- Lessmann, Stefan, Bart Baesens, Hsin-Vonn Seow, and Lyn Thomas. 2015. Benchmarking state-of-the-art classification algorithms for credit scoring: An update of research. European Journal of Operational Research 247: 124–36. [Google Scholar] [CrossRef] [Green Version]
- Maldonado, Miguel, Jared Dean, Wendy Czika, and Susan Haller. 2014. Leveraging Ensemble Models in SAS Enterprise Miner. Paper SAS133-2014. Charlotte: SAS Institute Inc. [Google Scholar]
- NCSU. 2022. Institute of Advanced Analytics: MSA Curriculum. Retrieved from North Carolina State University. Available online: https://analytics.ncsu.edu/?page_id=2874 (accessed on 13 January 2022).
- NYU Stern. 2022. NYU Stern Master of Science in Business Analytics. Available online: https://www.stern.nyu.edu/programs-admissions/ms-business-analytics/academics/blended-learning-capstone (accessed on 26 November 2022).
- Pena, Alejandro, Alejandro Patino, Francisco Chiclana, Fabio Caraffini, Mario Gongora, Juan David Gonzalez-Ruiz, and Eduardo Duque-Grisales. 2021. Fuzzy convolutional deep-learning model to estimate the operational risk capital using multi-source risk events. Applied Soft Computing 107: 107381. [Google Scholar] [CrossRef]
- Rajalingham, Kamalasen. 2005. A revised classification of spreadsheet errors. In 2. EuSpRIG Conference Proceedings, July 7–8. London: University of Greenwich. [Google Scholar]
- Rizwan, Muhammad Suhail, Ghufran Ahmad, and Dawood Ashraf. 2020. Systemic risk: The impact of COVID-19. Finance Research Letters 36: 101682. [Google Scholar] [CrossRef]
- Ruddenklau, Anton. 2022. Pulse of Fintech H2 21. Available online: https://assets.kpmg/content/dam/kpmg/xx/pdf/2022/02/pulse-of-fintech-h2-21.pdf (accessed on 20 July 2022).
- Saliba, Chafic, Panteha Farmanesh, and Seyed Alireza Athari. 2023. Does country risk impact the banking sectors’ non-performing loans? Evidence from BRICS emerging economies. Financial Innovation 9: 86. [Google Scholar] [CrossRef]
- SAS Institute Inc. 2015. Applied Analytics Using SAS Enterprise Miner (SAS Institute Course Notes). Charlotte: SAS Institute Inc. [Google Scholar]
- Shi, Si, Rita Tse, Wuman Luo, Stefano D’Addona, and Giovanni Pau. 2022. Machine learning-driven credit risk: A systemic review. Neural Computing and Applications 34: 14327–39. [Google Scholar] [CrossRef]
- Skoglund, Jimmy. 2014. Credit risk term-structures for lifetime impairment forecasting: A practical guide. Journal of Risk Management in Financial Institutions 10: 177–95. Available online: https://www.econbiz.de/Record/credit-risk-term-structures-for-lifetime-impairment-forecasting-a-practical-guide-skoglund-jimmy/10011670671 (accessed on 16 August 2022). [CrossRef]
- Smith, Tim. 2022. Investopedia. Available online: https://www.investopedia.com/terms/c/crowdfunding.asp (accessed on 20 October 2022).
- Verster, Tanja, Samistha Harcharan, Lizette Bezuidenhout, and Bart Baesens. 2021. Predicting take-up of home loan offers using tree-based ensemble models: A South African case study. South African Journal of Science 117: 1–8. [Google Scholar] [CrossRef] [PubMed]
- VU. 2022. Solve Today’s Complex Business Problems: From Data to Answers. Available online: https://vu.nl/en/education/master/business-analytics/curriculum (accessed on 13 January 2022).
- Yiu, Tony. 2019. Towards data science: Understanding random forests. Available online: https://towardsdatascience.com/understanding-random-forest-58381e0602d2 (accessed on 16 August 2022).
- Yurcan, Bryan. 2022. How Banks Can Shed Light on the ‘Black Box’ of AI Decision-Making. Available online: https://thefinancialbrand.com/news/data-analytics-banking/artificial-intelligence-banking/how-banks-can-shed-light-on-the-black-box-of-ai-decision-making-147960/ (accessed on 25 February 2023).
Challenge: Only limited guidelines on the use of machine-learning techniques in regulatory and impairment models are currently available, and those that are available are still under development and thus need to be improved. Opportunity: Improve and expand existing guidelines using machine-learning techniques in regulatory and impairment models. |
Challenge: Although techniques to address the black box conundrum of machine learning (explaining and interpreting machine-learning models) have been made available to some extent, this will remain an ever-changing research field for the foreseeable future, seeing that new machine-learning techniques, applications thereof, and techniques to explain the models are still being presented. Opportunity: Exploit the ever-changing research field, especially in terms of the improvement of using available machine learning techniques, new applications of these techniques, enhancing the techniques available to explain models developed using machine learning, as well as the evolvement of these three areas. |
Challenge: Some machine learning techniques are applied incorrectly due to insufficient understanding of the statistical foundation of these as well as the users not understanding the datasets that these models were built on. Opportunity: Invest in gaining a proper understanding of the statistical foundation underlying machine learning techniques and dataset that a specific model was built on. Research into statistical inference is needed, such as model selection, over- and underfitting, and the effects of outliers. |
Challenge: Contrary to popular belief, not all machine learning techniques outperform traditional statistical techniques in terms of accuracy. Opportunity: However, some machine learning techniques outperform traditional techniques. |
Challenge: The need for supercomputers and sophisticated software requirements pose a significant challenge. Opportunity: An ever-growing need for faster and better computers and an ever-growing need for the latest, most sophisticated software. |
Challenge: Seeing that financial crises are sporadic and, thus, it is difficult to incorporate future expected financial crises into predictive models, there is a need for new methods on how to adjust predictive models to allow them to incorporate financial crises. It is also necessary to enhance the availability of these methods. Opportunity: Develop new methods to incorporate future expected financial crises into predictive models and enhance the availability of these methods. |
Challenge: The IFRS 9 standard does not prescribe what techniques should be used to incorporate forward-looking macroeconomic conditions into credit risk models resulting in only a limited number of techniques being available and a need to further improve these available techniques. Opportunity: Build on existing techniques to incorporate macroeconomic conditions into credit risk models under IFRS 9, as well as develop new techniques to perform this function. |
Challenge: The quantification of the impact of climate risks on banks’ credit risk models is a relatively new field of research resulting in limited methods available to perform it. Opportunity: A wealth of opportunities exist in terms of research that should still be conducted to quantify the impact of climate risks. |
Challenge: Only a limited number of techniques are available to address the breakdown of financial credit predictive models during financial crises. Opportunity: Improve existing techniques to address the breakdown of financial credit predictive models during financial crises and create new ones where none exist. |
Challenge: A limited number of techniques have already been developed to build predictive models within the Fintech environment, where applications are typically unregulated and extreme volatility is experienced. Opportunity: Enhance the techniques currently in place and develop new ones to take the unique nature of Fintech into account when developing predictive models for this unique environment. |
Challenge: There still exists uncertainty about whether blockchain-based business models expose the firm and the market to new types of risk. Opportunity: Apply blockchain methods in the field of financial predictive models. |
Challenges: Seeing that Fintech lending is such a new development (access is provided to alternative funding via Fintech lending, and previously excluded customers and markets are now included), the methods used to develop Fintech-specific credit risk models remain unclear. Opportunity: Utilise existing techniques and develop new techniques to use within Fintech lending |
Challenge: The newly available Fintech data are associated with the need to ensure the relevance of data used to develop models. Fintech data also have additional legal and social restrictions. Opportunity: Techniques need to be developed to ensure or test data relevancy. Guidelines on the use of Fintech data. |
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Verster, T.; Fourie, E. The Changing Landscape of Financial Credit Risk Models. Int. J. Financial Stud. 2023, 11, 98. https://doi.org/10.3390/ijfs11030098
Verster T, Fourie E. The Changing Landscape of Financial Credit Risk Models. International Journal of Financial Studies. 2023; 11(3):98. https://doi.org/10.3390/ijfs11030098
Chicago/Turabian StyleVerster, Tanja, and Erika Fourie. 2023. "The Changing Landscape of Financial Credit Risk Models" International Journal of Financial Studies 11, no. 3: 98. https://doi.org/10.3390/ijfs11030098
APA StyleVerster, T., & Fourie, E. (2023). The Changing Landscape of Financial Credit Risk Models. International Journal of Financial Studies, 11(3), 98. https://doi.org/10.3390/ijfs11030098