Exploratory Community

How to measure non linear relationship

#1

Recently I’ve read a article regarding to the miss use of correlation coefficient to reveal the underlying relationship among several features. The author has demonstrated his own method, which has improved correlation coefficient method, to support better reveal of non linear relationship:

The article is at: https://towardsdatascience.com/rip-correlation-introducing-the-predictive-power-score-3d90808b9598

And his github repository is at: https://github.com/8080labs/ppscore

My question is in Exploratory, how to find out non-linear relationship from large amount of features in a stragiforward way, like a co-matrix presented in the article:
PPS%20matrix