How to make a plane curved
	• Fitting hyperplanes as separators is mathematically easy. – The mathematics is linear. • By replacing the raw input variables with a much larger set of features we get a nice property: – A planar separator in the high-dimensional space of feature vectors is a curved separator in the low dimensional space of the raw input variables.
					A planar separator in a 20-D feature space projected back to the original 2-D space