Given a dataset with two classes as shown in Fig. 1 below, one class of data points are denoted as green squares and the other class of data points are denoted as red circles. For the two learned projection vectors v (shown by the blue line) and v2 (shown by the light orange line), which one can better describe the objective of the Fisher's discriminant criterion? V2 V Fig. 1. Projecting data by two projection vectors.