3 papers
cs.IT2026
A discrete Benamou-Brenier formulation of Optimal Transport on graphs
Kieran Morris, Oliver Johnson
We propose a discrete transport equation on graphs which connects distributions on both vertices and edges. We then derive a discrete analogue of the Benamou-Brenier formulation fo…
stat.AP2025
Johnson's contribution to the Discussion of `Statistical aspects of the Covid-19 response' by Wood et al
Oliver Johnson
This is a response to the paper "Some statistical aspects of the Covid-19 response" by Wood et al, submitted to the discussion at the read paper meeting of the Royal Statistical So…
stat.CO2024
The Double Emulator
Conor Crilly, Oliver Johnson, Alexander Lewis +1
Computer models (simulators) are vital tools for investigating physical processes. Despite their utility, the prohibitive run-time of simulators hinders their direct application fo…