Fast direct calibration of interest rate derivatives pricing models
Authors: 
Luca Sabbioni, Marcello Restelli, and Andrea PrampoliniAuthors Info & Claims
Luca Sabbioni, Marcello Restelli, and Andrea PrampoliniAuthors Info & ClaimsOctober 2020
Article No.: 6, Pages 1 - 8
Abstract
To price complex derivative instruments and to manage the associated financial risk, investment banks typically model the underlying asset price dynamics using parametric stochastic models. Model parameters are calibrated by fitting cross sections of option prices on the relevant risk factors. It is fundamental for a calibration method to be accurate and fast and, to this end, Deep Learning techniques have attracted increasing attention in recent years. In this paper, the aim is to propose a Neural Network based calibration of a pricing model, where learning is directly performed on market data by using a non-trivial loss function, which includes the financial model adopted. In particular, the model chosen is the two-additive factor Gaussian Interest Rates model in a multi-curve framework calibrated on at-the-money European swaptions. The main advantage lies in the independence from an external calibrator and in the calibration time, reduced from several seconds to milliseconds, achieved by offloading the computational-intensive tasks to an offline training process, while the online evaluation can be performed in a considerably shorter time. Finally, the efficiency of the proposed approach is tested in both a single-currency and a multi-currency framework.
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Published: 07 October 2021
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