Clausel, M., Diehl, J., Mignot, R., Schmitz, L., Sugiura, N. and Usevich, K., 2023. The barycenter in free nilpotent Lie groups and its application to iterated-integrals signatures. arXiv preprint arXiv:2305.18996. [https://arxiv.org/abs/2305.18996]
Code available soon.
groupmean_ambient.py: algorithm using updates in the ambient space.