EPJ Web Conf.
Volume 245, 202024th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2019)
|Number of page(s)||6|
|Section||6 - Physics Analysis|
|Published online||16 November 2020|
High-dimensional data visualisation with the grand tour
School of Physics and Astronomy, Monash University, Melbourne VIC-3800
2 Department of Econometrics and Business Statistics, Monash University, Melbourne VIC-3800
* e-mail: email@example.com
Published online: 16 November 2020
In physics we often encounter high-dimensional data, in the form of multivariate measurements or of models with multiple free parameters. The information encoded is increasingly explored using machine learning, but is not typically explored visually. The barrier tends to be visualising beyond 3D, but systematic approaches for this exist in the statistics literature. I use examples from particle and astrophysics to show how we can use the “grand tour” for such multidimensional visualisations, for example to explore grouping in high dimension and for visual identification of multivariate outliers. I then discuss the idea of projection pursuit, i.e. searching the high-dimensional space for “interesting” low dimensional projections, and illustrate how we can detect complex associations between multiple parameters.
© The Authors, published by EDP Sciences, 2020
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