What Did I Do Wrong? Quantifying LLMs' Sensitivity and Consistency to Prompt Engineering

• URL: http://arxiv.org/abs/2406.12334v2
• Date: Thu, 5 Sep 2024 13:47:26 GMT
• Title: What Did I Do Wrong? Quantifying LLMs' Sensitivity and Consistency to Prompt Engineering
• Authors: Federico Errica, Giuseppe Siracusano, Davide Sanvito, Roberto Bifulco,
• Abstract summary: We introduce two metrics for classification tasks, namely sensitivity and consistency. sensitivity measures changes of predictions across rephrasings of the prompt. Instead, consistency measures how predictions vary across rephrasings for elements of the same class.
• Score: 8.019873464066308
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Large Language Models (LLMs) changed the way we design and interact with software systems. Their ability to process and extract information from text has drastically improved productivity in a number of routine tasks. Developers that want to include these models in their software stack, however, face a dreadful challenge: debugging LLMs' inconsistent behavior across minor variations of the prompt. We therefore introduce two metrics for classification tasks, namely sensitivity and consistency, which are complementary to task performance. First, sensitivity measures changes of predictions across rephrasings of the prompt, and does not require access to ground truth labels. Instead, consistency measures how predictions vary across rephrasings for elements of the same class. We perform an empirical comparison of these metrics on text classification tasks, using them as guideline for understanding failure modes of the LLM. Our hope is that sensitivity and consistency will be helpful to guide prompt engineering and obtain LLMs that balance robustness with performance.

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