Classification. The goal is to find the simplest description that will separate two sets of data (here: the points inside the circle from the ones outside). Li

Classification. The goal is to find the simplest description that will separate two sets of data (here: the points inside the circle from the ones outside). Linear classifiers - in 2D, a straight line that separates the two groups - are preferred when possible since linear is as simple as it gets. http://en.wikipedia.org/wiki/Linear_classifier http://en.wikipedia.org/wiki/Linear_classifier The video shows how a classification task that cannot be handled by a linear classifier in 2D can still be described by a linear equation (a flat plane) by transforming the data to 3D.