Update README.md

README.md

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-license: mit
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+license: mit
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+Details on the code used to produce and use this model are available at:
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+https://github.com/schrum2/MarioDiffusion
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+That repo has instructions to check out this model and apply it to the generation of Super Mario Bros. level scenes. 
+There is also an interactive GUI for constructing complete levels out of model-generated scenes.
+
+This model makes use of https://huggingface.co/sentence-transformers/multi-qa-MiniLM-L6-cos-v1 
+as a text embedding model for use with diffusion to generate Mario levels.
+It also makes use of negative guidance during diffusion training.
+
+To see a model using sentence-transformers/multi-qa-MiniLM-L6-cos-v1 without
+negative guidance, see https://huggingface.co/schrum2/MarioDiffusion-MiniLM-single-regular0.
+To see a model that uses negative guidance with
+a simple token-based transformer model for text embedding, see https://huggingface.co/schrum2/MarioDiffusion-MLM-negative0.