Official code: bottler/iisignature (125 stars, MIT, last commit 2026-06-03).
We explain the algebra needed to make sense of the log signature of a path, with plenty of examples. We show how the log signature can be calculated numerically, and explain some software tools which demonstrate it.
A Primer on the Signature Method in Machine Learning
Path Signatures for Feature Extraction. An Introduction to the Mathematics Underpinning an Efficient Machine Learning Technique
Signatures Meet Dynamic Programming: Generalizing Bellman Equations for Trajectory Following
Fractional signature: a generalisation of the signature inspired by fractional calculus
Log-PDE Methods for Rough Signature Kernels
Lecture notes on rough paths and applications to machine learning
@article{reizenstein2017calculation,
title = {Calculation of Iterated-Integral Signatures and Log Signatures},
author = {Jeremy Reizenstein},
year = {2017},
eprint = {1712.02757},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/1712.02757}
}Shows whether official code is linked for this paper.
[](https://codeofpaper.com/paper/1712.02757)