... on probability measures is taken as a Wasserstein metric arising from optimal transport theory. Design/methodology/approach The authors spell out the basis and rationale for using Wasserstein metrics on the data space of (random) probability measures. Findings In elaborating the new statistical analysis...

...Hung T. Nguyen Purpose This paper aims to offer a tutorial/introduction to new statistics arising from the theory of optimal transport to empirical researchers in econometrics and machine learning. Design/methodology/approach Presenting in a tutorial/survey lecture style to help practitioners...