https://win-vector.com/2023/08/20/detecting-data-differences-using-the-sphering-transform/
Detecting Data Differences Using the Sphering Transform
By Nina Zumel
August 20, 2023
“Why do we want to sphere-transform our data? One reason is that transforming the data can make it easier to detect whether a new set of data, W, has the same distribution as X.”