Principles of GANs
As shown in Figure 4.1.1 a GAN is analogous to a counterfeiter (generator) - police (discriminator) scenario. At the academy, the police are taught how to determine if a dollar bill is either genuine or fake. Samples of real dollar bills from the bank and fake money from the counterfeiter are used to train the police. However, from time to time, the counterfeiter will attempt to pretend that he printed real dollar bills. Initially, the police will not be fooled and will tell the counterfeiter why the money is fake. Taking into consideration this feedback, the counterfeiter hones his skills again and attempts to produce new fake dollar bills. As expected the police will be able to both spot the money as fake and justify why the dollar bills are fake.
Figure 4.1.1: The generator and discriminator of GANs are analogous to the counterfeiter and the police. The goal of the counterfeiter is to fool the police into believing that the dollar bill is real.
This scenario continues...
