Norms

Gist

How do you calculate the magnitude of vectors? Super important for machine learning

What makes a norm?

1. Positive definiteness - norm has to be positive, the norm is 0 if and only if the vector is 0.
2. Positive homogeneity
3. Triangle inequality

Types

1. Euclidean (norm-1)
2. Manhattan distance (taxicab, norm-2)