Biography

I am a PhD student at the University of Amsterdam, interested in information theory, equivariant deep learning, and pure mathematics more generally. More recently, I got very interested in AI alignment. You can find my alignment-related writing on Lesswrong.

Download my CV.

Interests
  • Information Theory
  • Machine Learning
  • Pure Mathematics
  • AI alignment
Education

  • PhD in Information Theory and Machine Learning, expected 2025

    University of Amsterdam

  • MSc in Artificial Intelligence, 2020

    University of Amsterdam

  • MSc in Mathematics, 2017

    University of Bonn

  • BSc in Mathematics, 2015

    University of Heidelberg

Publications

A Program to Build E(N)-Equivariant Steerable CNNs
We propose a general method to implement equivariant convolutional neural networks and demonstrate it for 3D equivariant tasks. The implementation is based on the Wigner-Eckart theorem for steerable kernels.
Gabriele Cesa, Leon Lang, Maurice Weiler
PDF Cite Reviews Code Video
A Program to Build E(N)-Equivariant Steerable CNNs
Information Decomposition Diagrams Applied beyond Shannon Entropy: A Generalization of Hu's Theorem
We generalize information diagrams to functions beyond Shannon entropy, including Kolmogorov complexity and the generalization error from machine learning.
Leon Lang, Pierre Baudot, Rick Quax, Patrick Forré
PDF Cite arXiv
Information Decomposition Diagrams Applied beyond Shannon Entropy: A Generalization of Hu's Theorem
A Wigner-Eckart Theorem for Group Equivariant Convolution Kernels
We generalize the famous Wigner-Eckart theorem from quantum mechanics in order to characterize steerable kernel spaces in representation theoretic terms.
Leon Lang, Maurice Weiler
PDF Cite arXiv Reviews Video Slides Poster
A Wigner-Eckart Theorem for Group Equivariant Convolution Kernels
Learning to Request Guidance in Emergent Communication
We analyze the training behaviour of an agent that can ask for help. Doing this is costly, and so the agent learns to become more independent in familiar situations.
Benjamin Kolb, Leon Lang, Henning Bartsch, Arwin Gansekoele, Raymond Koopmanschap, Leonardo Romor, David Speck, Mathijs Mul, Elia Bruni
PDF Cite arXiv Proceedings
Learning to Request Guidance in Emergent Communication

Blog

Mathematical Writings from my Time as a Student
In this post, I link to unpublished mathematical writings I did when I was a bachelor and master student in mathematics, and a master student in artificial intelligence.
Leon Lang
Mar 6, 2022 1 min read

Contact