Linear or non-linear

Module 1. The Predictive Modeling Pipeline Tabular data exploration
#1

contrary to decision tree, linear models can only capture linear interaction, so be aware of non-linear relationships in your data.

What does this mean? we do we find out the data set is linear or non-linear?

#2

You could imagine a regression problem where the link between x and y is not a linear relationship.

For instance, in the last chapter, we try to model the power of a cyclist from the speed. The relationship is non-linear. The result will be that applying a linear model will result in an underfitted model.

#3

Thanks very much :slight_smile: