Update README.md

README.md

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 Stable Diffusion is a latent text-to-image diffusion model capable of generating photo-realistic images given any text input.
 For more information about how Stable Diffusion functions, please have a look at [🤗's Stable Diffusion with D🧨iffusers blog](https://huggingface.co/blog/stable_diffusion).
 
-The **Stable-Diffusion-v1-4** checkpoint was initialized with the weights of the [Stable-Diffusion-v1-3](https:/steps/huggingface.co/CompVis/stable-diffusion-v1-3) 
-checkpoint and subsequently fine-tuned on X steps on Y with Z.
+The **Stable-Diffusion-v1-4** checkpoint was initialized with the weights of the [Stable-Diffusion-v1-2](https:/steps/huggingface.co/CompVis/stable-diffusion-v1-2) 
+checkpoint and subsequently fine-tuned on 225k steps at resolution 512x512 on "laion-aesthetics v2 5+" and 10% dropping of the text-conditioning to improve [classifier-free guidance sampling](https://arxiv.org/abs/2207.12598).
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 ## Model Details
 - **Developed by:** Robin Rombach, Patrick Esser