Dimensions and degrees of freedom

Number of features vs number of dimensions

Mar 6, 2019 · 4 min read

The dimension of a mathematical object is the number of independent variables needed to fully describe it. A point has 0 dimensions. A line has 1 dimension, a square has 2 dimensions and a cube has 3 dimensions. On a line we need one variable, let’s say the distance from a starting point in order to pinpoint our position. On a square…