Fréchet Inception Distance (FID) is a metric used to evaluate the quality of images generated by generative models, particularly Generative Adversarial Networks (GANs). It measures the similarity between the distribution of generated images and real images by calculating the distance between their feature representations in a pre-trained deep learning model, like Inception-v3. This metric provides a more robust evaluation of generative models as it considers both the mean and covariance of the feature distributions, offering insights into how closely the generated images mimic real-world data.
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