High-dimensional visualisation for particle physics

by Ursula Laa (Monash University)

Thursday 20 Jun 2019, 14:00 → 15:00 Europe/Zurich

Aula Caldirola (Dipartimento di Fisica, Università degli Studi di Milano)

Physical models are typically high dimensional, while standard visualisations are restricted to be at most 3-d. In this talk I will introduce the Grand Tour, an algorithm for the visualisation of high dimensional distributions by means of dynamical low-dimensional projections. By viewing an animation of smoothly interpolated projections we can extrapolate the shape of the parameter space in high dimensions. I will then show an application to data from PDFsense, aiming to visualise the sensitivity of PDF fits to a given experiment, where the Tour reveals features not observed in other visualisations. Finally I will discuss the idea of projection pursuit, i.e. searching the high dimensional space for “interesting” low dimensional projections.

slides