Designing a Synthetic Instruction Fine-Tuning Pipeline Under Budget and Quality Constraints
You lead an internal team building an instruction-following assistant for your company’s support engineers. You have only 1,000 human-written, high-quality instruction–response examples (seed set), but you need ~200,000 examples to instruction fine-tune a pre-trained LLM within a month. You propose to (a) use an existing smaller “weak” model to help generate and/or curate additional instruction–response pairs, and (b) use an automated, Self-Instruct-style process to expand the variety of instructions beyond what your seed set covers. However, leadership is concerned about synthetic-data errors, bias amplification, and the risk that the strong model will learn the weak model’s mistakes.
Write an essay that proposes an end-to-end data strategy for instruction fine-tuning in this setting. Your answer must explain how you would combine: (1) instruction fine-tuning goals (what behavior you are trying to activate/shape), (2) Self-Instruct or other automatic instruction+response generation to scale coverage, (3) concrete data selection/filtering methods to control quality and redundancy, and (4) a weak-to-strong approach (using weak-model labels and/or weak-model-based selection) while managing the risk of distilling weak errors into the strong model.
Be specific about the key design choices and tradeoffs (e.g., where you would trust the weak model vs. require human review, what you would filter out and why, how you would ensure novelty/diversity, and what failure modes you would monitor during/after fine-tuning).
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Ch.2 Generative Models - Foundations of Large Language Models
Foundations of Large Language Models
Foundations of Large Language Models Course
Computing Sciences
Ch.4 Alignment - Foundations of Large Language Models
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Persistence of General Instruction-Following Behavior After Fine-Tuning
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