How Deep are Financial Models?
13 Pages Posted: 16 Jul 2020
Date Written: June 23, 2020
Deep learning is a powerful tool, which is becoming increasingly popular in financial modeling. However, model validation requirements such as SR 11-7 pose a significant obstacle to the deployment of neural networks in a bank's production system. Their typically high number of (hyper-)parameters poses a particular challenge to model selection, benchmarking and documentation. We present a simple grid based method together with an open source implementation and show how this pragmatically satisfies model validation requirements. We illustrate the method by learning the option pricing formula in the Black-Scholes and the Heston model.
Keywords: neural networks, model validation, SR 11-7, derivatives, risk management, pricing
JEL Classification: G13, C10, C45
Suggested Citation: Suggested Citation