this post was submitted on 21 Jun 2023
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Actually Useful AI

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Iโ€™ve been following the development of the next Stable Diffusion model, and Iโ€™ve seen this approach mentioned.

Seems like this is a way in which AI training is analogous to human learning - we learn quite a lot from fiction, games, simulations and apply this to the real world. Iโ€™m sure the same pitfalls apply as well.

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[โ€“] [email protected] 3 points 1 year ago (1 children)

Synthetic data was used here with impressive results: https://programming.dev/post/133153

There is a lot of potential in this approach, but the idea of using it for training AI systems in MRI/CT/etc. diagnostic methods, as mentioned in the article, is a bit scary to me.

[โ€“] [email protected] 2 points 1 year ago (1 children)

Yeah, youโ€™d better have a through way to check if there are any systematic distortions that could have an adverse effect on its operation. I do get the privacy rationale for using synthesized data, though.

[โ€“] [email protected] 1 points 1 year ago* (last edited 1 year ago)

I guess if they pretrain the model using the synthetic dataset and then in a separate training phase โ€œalignโ€ it using real data, it could work. Just like how ChatGPT was pretrained on an internet dataset and then had an RLHF phase to make it behave like an assistant rather than a generic text completion model. (Not sure if Iโ€™m using the correct terms.)

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