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We need to backpropagate from output string back through the network to generate the input string.

Thank you for your reply. Could you give us more details on that idea?

It’s how the original image recognition obfuscation techniques worked. You’d update an image by backpropagating from the desired output category.

LLMs are much more complicated structures than imagenets, so I’m sure there are a lot of challenges involved.

Also I imagine the input (output?) might be complete ghibberish.