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Scoring by usage

Author

Listed:
  • J Banasik

    (University of Edinburgh)

  • J Crook

    (University of Edinburgh)

  • L Thomas

    (University of Southampton)

Abstract

This paper aims to discover whether the predictive accuracy of a new applicant scoring model for a credit card can be improved by estimating separate scoring models for applicants who are predicted to have high or low usage of the card. Two models are estimated. First we estimate a model to explain the desired usage of a card, and second we estimate separately two further scoring models, one for those applicants whose usage is predicted to be high, and one for those for whom it is predicted to be low. The desired usage model is a two-stage Heckman model to take into account the fact that the observed usage of accepted applicants is constrained by their credit limit. Thus a model of the determinants of the credit limit, and one of usage, are both estimated using Heckman's ML estimator. We find a large number of variables to be correlated with desired usage. We also find that the two stage scoring methodology gives only very marginal improvements over a single stage scoring model, that we are able to predict a greater percentage of bad payers for low users than for high users and a greater percentage of good payers for high users than for low users.

Suggested Citation

  • J Banasik & J Crook & L Thomas, 2001. "Scoring by usage," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 52(9), pages 997-1006, September.
    • Handle: RePEc:pal:jorsoc:v:52:y:2001:i:9:d:10.1057_palgrave.jors.2601178
    DOI: 10.1057/palgrave.jors.2601178
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    Citations

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    Cited by:

    1. Nguyen Duong & Do Thi Thu Ha & Nguyen Bich Ngoc, 2017. "The Application of Discriminant Model in Managing Credit Risk for Consumer Loans in Vietnamese Commercial Bank," Asian Social Science, Canadian Center of Science and Education, vol. 13(2), pages 176-176, February.
    2. Finlay, Steven, 2011. "Multiple classifier architectures and their application to credit risk assessment," European Journal of Operational Research, Elsevier, vol. 210(2), pages 368-378, April.
    3. J Whittaker & C Whitehead & M Somers, 2007. "A dynamic scorecard for monitoring baseline performance with application to tracking a mortgage portfolio," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 58(7), pages 911-921, July.
    4. Hussein A. Abdou & John Pointon, 2011. "Credit Scoring, Statistical Techniques And Evaluation Criteria: A Review Of The Literature," Intelligent Systems in Accounting, Finance and Management, John Wiley & Sons, Ltd., vol. 18(2-3), pages 59-88, April.

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