Backward Deep BSDE Methods and Applications to Nonlinear Problems

We present a pathwise deep Backward Stochastic Differential Equation (BSDE) method for Forward Backward Stochastic Differential Equations with terminal conditions that time-steps the BSDE backwards and apply it to the differential rates problem as a prototypical nonlinear problem of independent fina...

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Main Authors: Yajie Yu, Narayan Ganesan, Bernhard Hientzsch
Format: Article
Language:English
Published: MDPI AG 2023-03-01
Series:Risks
Subjects:
Online Access:https://www.mdpi.com/2227-9091/11/3/61
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author Yajie Yu
Narayan Ganesan
Bernhard Hientzsch
author_facet Yajie Yu
Narayan Ganesan
Bernhard Hientzsch
author_sort Yajie Yu
collection DOAJ
description We present a pathwise deep Backward Stochastic Differential Equation (BSDE) method for Forward Backward Stochastic Differential Equations with terminal conditions that time-steps the BSDE backwards and apply it to the differential rates problem as a prototypical nonlinear problem of independent financial interest. The nonlinear equation for the backward time-step is solved exactly or by a Taylor-based approximation. This is the first application of such a pathwise backward time-stepping deep BSDE approach for problems with nonlinear generators. We extend the method to the case when the initial value of the forward components X can be a parameter rather than fixed and similarly to also learn values at intermediate times. We present numerical results for a call combination and for a straddle, the latter comparing well to those obtained by Forsyth and Labahn with a specialized PDE solver.
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spelling doaj.art-e70a98cd5681459eba099b20d76795f92023-11-17T13:41:49ZengMDPI AGRisks2227-90912023-03-011136110.3390/risks11030061Backward Deep BSDE Methods and Applications to Nonlinear ProblemsYajie Yu0Narayan Ganesan1Bernhard Hientzsch2Corporate Model Risk, Wells Fargo, New York, NY 10017, USACorporate Model Risk, Wells Fargo, New York, NY 10017, USACorporate Model Risk, Wells Fargo, New York, NY 10017, USAWe present a pathwise deep Backward Stochastic Differential Equation (BSDE) method for Forward Backward Stochastic Differential Equations with terminal conditions that time-steps the BSDE backwards and apply it to the differential rates problem as a prototypical nonlinear problem of independent financial interest. The nonlinear equation for the backward time-step is solved exactly or by a Taylor-based approximation. This is the first application of such a pathwise backward time-stepping deep BSDE approach for problems with nonlinear generators. We extend the method to the case when the initial value of the forward components X can be a parameter rather than fixed and similarly to also learn values at intermediate times. We present numerical results for a call combination and for a straddle, the latter comparing well to those obtained by Forsyth and Labahn with a specialized PDE solver.https://www.mdpi.com/2227-9091/11/3/61differential ratesFBSDEsnonlinear pricingdeep learning for pricing
spellingShingle Yajie Yu
Narayan Ganesan
Bernhard Hientzsch
Backward Deep BSDE Methods and Applications to Nonlinear Problems
Risks
differential rates
FBSDEs
nonlinear pricing
deep learning for pricing
title Backward Deep BSDE Methods and Applications to Nonlinear Problems
title_full Backward Deep BSDE Methods and Applications to Nonlinear Problems
title_fullStr Backward Deep BSDE Methods and Applications to Nonlinear Problems
title_full_unstemmed Backward Deep BSDE Methods and Applications to Nonlinear Problems
title_short Backward Deep BSDE Methods and Applications to Nonlinear Problems
title_sort backward deep bsde methods and applications to nonlinear problems
topic differential rates
FBSDEs
nonlinear pricing
deep learning for pricing
url https://www.mdpi.com/2227-9091/11/3/61
work_keys_str_mv AT yajieyu backwarddeepbsdemethodsandapplicationstononlinearproblems
AT narayanganesan backwarddeepbsdemethodsandapplicationstononlinearproblems
AT bernhardhientzsch backwarddeepbsdemethodsandapplicationstononlinearproblems