What is “linear” classification?
	• Classification is intrinsically non-linear – It puts non-identical things in the same class, so a difference in the input vector sometimes causes zero change in the answer (what does this show?) • “Linear classification” means that the part that adapts is linear – The adaptive part is followed by a fixed non-linearity. – It may also be preceded by a fixed non-linearity (e.g. nonlinear basis functions).
						fixed non- linear function
				adaptive linear function