Is preprocessing cheating?
	• It seems like cheating if the aim to show how powerful learning is. The really hard bit is done by the preprocessing. • Its not cheating if we learn the non-linear preprocessing. – This makes learning much more difficult and much more interesting.. • Its not cheating if we use a very big set of non- linear features that is task-independent. – Support Vector Machines make it possible to use a huge number of features without requiring much computation or data.