this post was submitted on 20 Nov 2023
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LocalLLaMA

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Community to discuss about Llama, the family of large language models created by Meta AI.

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How to prompt engineering non-openai models to output structured json (alien.top)
submitted 2 years ago by backtrack432@alien.top to c/localllama@poweruser.forum
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Does anyone know how function calling works under the hood?

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[–] tothatl@alien.top 1 points 2 years ago

Lllama.cpp supports BNF grammars. You basically tell the model runner the exact format of the output and where the data goes in it and even which list of values you expect, and it will only produce output in that format.

Useful for generating JSON and for document classification.