no code implementations • 15 Feb 2023 • Matthew Werenski, Shoaib Bin Masud, James M. Murphy, Shuchin Aeron
This paper considers the use of recently proposed optimal transport-based multivariate test statistics, namely rank energy and its variant the soft rank energy derived from entropically regularized optimal transport, for the unsupervised nonparametric change point detection (CPD) problem.
no code implementations • 29 Oct 2021 • Shoaib Bin Masud
In this paper, we use and further develop upon a recently proposed multivariate, distribution-free Goodness-of-Fit (GoF) test based on the theory of Optimal Transport (OT) called the Rank Energy (RE) [1], for non-parametric and unsupervised Change Point Detection (CPD) in multivariate time series data.
1 code implementation • 29 Oct 2021 • Shoaib Bin Masud, Matthew Werenski, James M. Murphy, Shuchin Aeron
We leverage this result to demonstrate fast convergence of sample sRE and sRMMD to their population version making them useful for high-dimensional GoF testing.
1 code implementation • 16 Mar 2021 • Shoaib Bin Masud, Boyang Lyu, Shuchin Aeron
In this paper, we extend the recently proposed multivariate rank energy distance, based on the theory of optimal transport, for statistical testing of distributional similarity, to soft rank energy distance.