Yang, Bill Huajian
(2022):
*Modeling Path-Dependent State Transition by a Recurrent Neural Network.*
Forthcoming in: Big Data and Information Analytics

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## Abstract

Rating transition models are widely used for credit risk evaluation. It is not uncommon that a time-homogeneous Markov rating migration model deteriorates quickly after projecting repeatedly for a few periods. This is because the time-homogeneous Markov condition is generally not satisfied. For a credit portfolio, rating transition is usually path dependent. In this paper, we propose a recurrent neural network (RNN) model for modeling path-dependent rating migration. An RNN is a type of artificial neural networks where connections between nodes form a directed graph along a temporal sequence. There are neurons for input and output at each time-period. The model is informed by the past behaviours for a loan along the path. Information learned from previous periods propagates to future periods. Experiments show this RNN model is robust.

Item Type: | MPRA Paper |
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Original Title: | Modeling Path-Dependent State Transition by a Recurrent Neural Network |

English Title: | Modeling Path-Dependent State Transition by a Recurrent Neural Network |

Language: | English |

Keywords: | Path-dependent, rating transition, recurrent neural network, deep learning, Markov property, time-homogeneity |

Subjects: | C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C13 - Estimation: General C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C18 - Methodological Issues: General C - Mathematical and Quantitative Methods > C4 - Econometric and Statistical Methods: Special Topics > C45 - Neural Networks and Related Topics C - Mathematical and Quantitative Methods > C5 - Econometric Modeling > C51 - Model Construction and Estimation C - Mathematical and Quantitative Methods > C5 - Econometric Modeling > C58 - Financial Econometrics G - Financial Economics > G1 - General Financial Markets > G12 - Asset Pricing ; Trading Volume ; Bond Interest Rates G - Financial Economics > G1 - General Financial Markets > G17 - Financial Forecasting and Simulation G - Financial Economics > G3 - Corporate Finance and Governance > G32 - Financing Policy ; Financial Risk and Risk Management ; Capital and Ownership Structure ; Value of Firms ; Goodwill G - Financial Economics > G3 - Corporate Finance and Governance > G33 - Bankruptcy ; Liquidation M - Business Administration and Business Economics ; Marketing ; Accounting ; Personnel Economics > M3 - Marketing and Advertising |

Item ID: | 114188 |

Depositing User: | Dr. Bill Huajian Yang |

Date Deposited: | 15 Aug 2022 00:19 |

Last Modified: | 15 Aug 2022 00:19 |

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URI: | https://mpra.ub.uni-muenchen.de/id/eprint/114188 |