A theoretical analysis of the test error of finite-rank kernel ridge regression

TS Cheng, A Lucchi, A Kratsios… - Advances in Neural …, 2023 - proceedings.neurips.cc
Existing statistical learning guarantees for general kernel regressors often yield loose
bounds when used with finite-rank kernels. Yet, finite-rank kernels naturally appear in a …

Universality of Linear Recurrences Followed by Non-linear Projections: Finite-Width Guarantees and Benefits of Complex Eigenvalues

A Orvieto, S De, C Gulcehre, R Pascanu… - Forty-first International …, 2024 - openreview.net
Deep neural networks based on linear RNNs interleaved with position-wise MLPs are
gaining traction as competitive approaches for sequence modeling. Examples of such …

Rough Transformers: Lightweight Continuous-Time Sequence Modelling with Path Signatures

F Moreno-Pino, Á Arroyo, H Waldon, X Dong… - arxiv preprint arxiv …, 2024 - arxiv.org
Time-series data in real-world settings typically exhibit long-range dependencies and are
observed at non-uniform intervals. In these settings, traditional sequence-based recurrent …

Forecasting mortality rates with functional signatures

ZJ Yap, D Pathmanathan… - ASTIN Bulletin: The Journal …, 2025 - cambridge.org
This study introduces an innovative methodology for mortality forecasting, which integrates
signature-based methods within the functional data framework of the Hyndman–Ullah (HU) …

Variance Norms for Kernelized Anomaly Detection

T Cass, L Gonon, N Zozoulenko - arxiv preprint arxiv:2407.11873, 2024 - arxiv.org
We present a unified theory for Mahalanobis-type anomaly detection on Banach spaces,
using ideas from Cameron-Martin theory applied to non-Gaussian measures. This approach …

Universal randomised signatures for generative time series modelling

F Biagini, L Gonon, N Walter - arxiv preprint arxiv:2406.10214, 2024 - arxiv.org
Randomised signature has been proposed as a flexible and easily implementable
alternative to the well-established path signature. In this article, we employ randomised …

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

C Cuchiero, G Gazzani, J Möller… - Mathematical …, 2024 - 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 …

Risk sharing with deep neural networks

M Burzoni, A Doldi, E Monzio Compagnoni - Quantitative Finance, 2024 - Taylor & Francis
We consider the problem of optimally sharing a financial position among agents with
potentially different reference risk measures. The problem is equivalent to computing the …

Signature Reconstruction from Randomized Signatures

M Glückstad, NM Cirone, J Teichmann - arxiv preprint arxiv:2502.03163, 2025 - arxiv.org
Controlled ordinary differential equations driven by continuous bounded variation curves
can be considered a continuous time analogue of recurrent neural networks for the …

Data-driven control of input-affine systems: the role of the signature transform

A Scampicchio, MN Zeilinger - arxiv preprint arxiv:2409.05685, 2024 - arxiv.org
One of the most challenging tasks in control theory is arguably the design of a regulator for
nonlinear systems when the dynamics are unknown. To tackle it, a popular strategy relies on …