Characterizing Fitness Landscape Structures in Prompt Engineering

• URL: http://arxiv.org/abs/2509.05375v1
• Date: Thu, 04 Sep 2025 11:52:19 GMT
• Title: Characterizing Fitness Landscape Structures in Prompt Engineering
• Authors: Arend Hintze,
• Abstract summary: We present a systematic analysis of fitness landscape structures in prompt engineering.<n>We reveal fundamentally different landscape topologies.<n>Our findings provide an empirical foundation for understanding the complexity of optimization in prompt engineering landscapes.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: While prompt engineering has emerged as a crucial technique for optimizing large language model performance, the underlying optimization landscape remains poorly understood. Current approaches treat prompt optimization as a black-box problem, applying sophisticated search algorithms without characterizing the landscape topology they navigate. We present a systematic analysis of fitness landscape structures in prompt engineering using autocorrelation analysis across semantic embedding spaces. Through experiments on error detection tasks with two distinct prompt generation strategies -- systematic enumeration (1,024 prompts) and novelty-driven diversification (1,000 prompts) -- we reveal fundamentally different landscape topologies. Systematic prompt generation yields smoothly decaying autocorrelation, while diversified generation exhibits non-monotonic patterns with peak correlation at intermediate semantic distances, indicating rugged, hierarchically structured landscapes. Task-specific analysis across 10 error detection categories reveals varying degrees of ruggedness across different error types. Our findings provide an empirical foundation for understanding the complexity of optimization in prompt engineering landscapes.

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