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Can you explain the theoretical differences between LoRA and QLoRA, and provide a detailed, step-by-step guide — including code — for fine-tuning a large language model with each approach, highlighting trade-offs in performance, memory efficiency, and deployment considerations?
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ML/AI Engineer

Interviewed at Fractal

4.1
Aug 14, 2025

Can you explain the theoretical differences between LoRA and QLoRA, and provide a detailed, step-by-step guide — including code — for fine-tuning a large language model with each approach, highlighting trade-offs in performance, memory efficiency, and deployment considerations?

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