Something or someone that discriminates; in machine learning, a model that learns to distinguish between real and generated data.
From discriminate plus -or suffix. The -or suffix (from Latin) creates agent nouns meaning 'one who performs the action' or 'thing that does the action.'
In GANs (generative adversarial networks), the discriminator and generator play a mathematical game—the discriminator learns to catch fake data while the generator tries to fool it!
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