Researchers at the Massachusetts Institute of Technology (MIT) have recently developed a metric that can be used to capture the space of collider events based on the earth mover’s distance (EMD), a measure used to evaluate dissimilarity between two multi-dimensional probability distributions. The metric they proposed, outlined in a paper published in Physical Review Letters, could enable the development of new powerful tools to analyze and visualize collider data, which do not rely on a choice of observables.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/anewmetricto.jpg)
Source:
https://phys.org/news/2019-08-metric-capture-similarity-collider-events.html