$\textbf{Only-IF}$:Revealing the Decisive Effect of Instruction Diversity on Generalization

• URL: http://arxiv.org/abs/2410.04717v3
• Date: Fri, 18 Oct 2024 03:18:50 GMT
• Title: $\textbf{Only-IF}$:Revealing the Decisive Effect of Instruction Diversity on Generalization
• Authors: Dylan Zhang, Justin Wang, Francois Charton,
• Abstract summary: We show that $textbfonly emerges$ when training data is diversified enough across semantic domains. We extend our analysis to real-world scenarios, including fine-tuning of $textit$textbfspecialist$$ and $textit$textbfgeneralist$$ models.
• Score: 1.6958018695660049
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Understanding and accurately following instructions is critical for large language models (LLMs) to be effective across diverse tasks. In this work, we rigorously examine the key factors that enable models to generalize to unseen instructions, providing insights to guide the collection of data for instruction-tuning. Through controlled experiments, inspired by the Turing-complete Markov algorithm, we demonstrate that such generalization $\textbf{only emerges}$ when training data is diversified enough across semantic domains. Our findings also reveal that merely diversifying within limited domains fails to ensure robust generalization. In contrast, cross-domain data diversification, even under constrained data budgets, significantly enhances a model's adaptability. We further extend our analysis to real-world scenarios, including fine-tuning of $\textit{$\textbf{specialist}$}$ and $\textit{$\textbf{generalist}$}$ models. In both cases, we demonstrate that 1) better performance can be achieved by increasing the diversity of an established dataset while keeping the data size constant, and 2) when scaling up the data, diversifying the semantics of instructions is more effective than simply increasing the quantity of similar data. Our research provides important insights for dataset collation, particularly when optimizing model performance by expanding training data for both specialist and generalist scenarios. We show that careful consideration of data diversification is key: training specialist models with data extending beyond their core domain leads to significant performance improvements, while generalist models benefit from diverse data mixtures that enhance their overall instruction-following capabilities across a wide range of applications. Our results highlight the critical role of strategic diversification and offer clear guidelines for improving data quality.

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