A Theoretical Introduction to Dimensionality Reduction with t-SNE

In this article, we will look at the motivation behind using dimensionality reduction on data. We will also see the definition of linear and non-linear dimensionality reduction techniques. Afterward, we will get a theoretical introduction to a non-linear technique called t-SNE.

Motivation for Dimensionality Reduction

So, why would we want to reduce the dimensionality of our data, and what does that even mean? Let us take an illustrative example to understand what it is…