She typed y .

On a whim, she passed a single test image through the network: a photo of her own face.

The model loaded. 25.5 million parameters, all floating-point numbers between -3.4 and 3.7. But something was off. The output logits weren't class probabilities for cats, dogs, or airplanes. They were coordinates. 1,024-dimensional vectors.

She pressed Enter.

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