Neural network survival analysis for personal loan data

Neural network survival analysis for personal loan data

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Article ID: iaor20062729
Country: United Kingdom
Volume: 56
Issue: 9
Start Page Number: 1089
End Page Number: 1098
Publication Date: Sep 2005
Journal: Journal of the Operational Research Society
Authors: , , , ,
Keywords: neural networks
Abstract:

Traditionally, credit scoring aimed at distinguishing good payers from bad payers at the time of the application. The timing when customers default is also interesting to investigate since it can provide the bank with the ability to do profit scoring. Analysing when customers default is typically tackled using survival analysis. In this paper, we discuss and contrast statistical and neural network approaches for survival analysis. Compared to the proportional hazards model, neural networks may offer an interesting alternative because of their universal approximation property and the fact that no baseline hazard assumption is needed. Several neural network survival analysis models are discussed and evaluated according to their way of dealing with censored observations, time-varying inputs, the monotonicity of the generated survival curves and their scalability. In the experimental part, we contrast the performance of a neural network survival analysis model with that of the proportional hazards model for predicting both loan default and early repayment using data from a UK financial institution.

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