As a non native english speaker sometimes, I'm having hard time understanding not conventional sentence as the following. Can you rephrase the sentence (in Bold) in another way?
This upper bound is equal to M/m^2, where M is the square of the distance of the furthest data point in the training set from the point (0,0) and m is the margin. The margin has a trickier definition: It is the minimum distance of any data point from the separating line for the line for which this distance is the largest
From the book "Probably Approximately Correct" by Leslie Valiant