Linear vs Non-Linear

• Linear transformations

• use a linear function
• F(x) of a raw data vector x such that F is a linear function of x, e.g. F(x)=2x+1

• Non-linear transformations

• Use a non-linear function
• F(c) of a raw data vector such that F is a non-linear function of x, e.g.
• Can also be log functions, e.g. F(x)=1+2log(x)