On neural differential equations

P Kidger - arXiv preprint arXiv:2202.02435, 2022 - arxiv.org
The conjoining of dynamical systems and deep learning has become a topic of great
interest. In particular, neural differential equations (NDEs) demonstrate that neural networks …

Neural controlled differential equations for irregular time series

P Kidger, J Morrill, J Foster… - Advances in Neural …, 2020 - proceedings.neurips.cc
Neural ordinary differential equations are an attractive option for modelling temporal
dynamics. However, a fundamental issue is that the solution to an ordinary differential …

Neural sdes as infinite-dimensional gans

P Kidger, J Foster, X Li… - … conference on machine …, 2021 - proceedings.mlr.press
Stochastic differential equations (SDEs) are a staple of mathematical modelling of temporal
dynamics. However, a fundamental limitation has been that such models have typically been …

Conditional sig-wasserstein gans for time series generation

S Liao, H Ni, L Szpruch, M Wiese… - arXiv preprint arXiv …, 2020 - arxiv.org
Generative adversarial networks (GANs) have been extremely successful in generating
samples, from seemingly high dimensional probability measures. However, these methods …

Sig-Wasserstein GANs for time series generation

H Ni, L Szpruch, M Sabate-Vidales, B Xiao… - Proceedings of the …, 2021 - dl.acm.org
Synthetic data is an emerging technology that can significantly accelerate the development
and deployment of AI machine learning pipelines. In this work, we develop high-fidelity time …

A data-driven market simulator for small data environments

H Buehler, B Horvath, T Lyons, IP Arribas… - arXiv preprint arXiv …, 2020 - arxiv.org
Neural network based data-driven market simulation unveils a new and flexible way of
modelling financial time series without imposing assumptions on the underlying stochastic …

The universal approximation property: characterization, construction, representation, and existence

A Kratsios - Annals of Mathematics and Artificial Intelligence, 2021 - Springer
The universal approximation property of various machine learning models is currently only
understood on a case-by-case basis, limiting the rapid development of new theoretically …

The Signature Kernel is the solution of a Goursat PDE

C Salvi, T Cass, J Foster, T Lyons, W Yang - SIAM Journal on Mathematics of …, 2021 - SIAM
Recently, there has been an increased interest in the development of kernel methods for
learning with sequential data. The signature kernel is a learning tool with the potential to …

Signature-based models: theory and calibration

C Cuchiero, G Gazzani, S Svaluto-Ferro - SIAM journal on financial …, 2023 - SIAM
We consider asset price models whose dynamics are described by linear functions of the
(time extended) signature of a primary underlying process, which can range from a (market …

Joint calibration to SPX and VIX options with signature‐based models

C Cuchiero, G Gazzani, J Möller… - Mathematical …, 2023 - Wiley Online Library
We consider a stochastic volatility model where the dynamics of the volatility are described
by a linear function of the (time extended) signature of a primary process which is supposed …