2020

Scalable Gradients for Stochastic Differential Equations

Li, Xuechen, Wong, Ting-Kam Leonard, Chen, Ricky T. Q. et al.

Understand

The adjoint sensitivity method scalably computes gradients of solutions to ordinary differential equations.

  • We generalize this method to stochastic differential equations, allowing time-efficient and constant-memory computation of gradients with high-order adaptive solvers.
  • Specifically, we derive a stochastic differential equation whose solution is the gradient, a memory-efficient algorithm for caching noise, and conditions under which numerical solutions converge.
  • In addition, we combine our method with gradient-based stochastic variational inference for latent stochastic differential equations.

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