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James Chapman

3 accepted papers

2025

Demystifying Topological Message-Passing with Relational Structures: A Case Study on Oversquashing in Simplicial Message-Passing

ICLR 2025poster

Topological deep learning (TDL) has emerged as a powerful tool for modeling higher-order interactions in relational data. However, phenomena such as oversquashing in topological message-passing remain understudied and lack theoretical analysis. We propose a unifying axiomatic framework that bridges…

Cited by 0SourcePDFScholar
2025

Zero-Shot Context Generalization in Reinforcement Learning from Few Training Contexts

NeurIPS 2025poster

Deep reinforcement learning (DRL) has achieved remarkable success across multiple domains, including competitive games, natural language processing, and robotics. Despite these advancements, policies trained via DRL often struggle to generalize to evaluation environments with different parameters. T…

Cited by 0SourceScholar
2024

Unconstrained Stochastic CCA: Unifying Multiview and Self-Supervised Learning

ICLR 2024poster

The Canonical Correlation Analysis (CCA) family of methods is foundational in multiview learning. Regularised linear CCA methods can be seen to generalise Partial Least Squares (PLS) and be unified with a Generalized Eigenvalue Problem (GEP) framework. However, classical algorithms for these linear…

Cited by 2SourcePDFScholar