Pre-Processing the Prompt to generate an efficient Output for Unit Test Generation

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2025-10-25

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Department of Computer Science and Engineering(CSE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh

Abstract

Large Language Models (LLMs) have shown remarkable performance across a wide range of natural language processing tasks, yet their effectiveness remains highly sen sitive to prompt formulation. Manual prompt engineering is often labor-intensive, inconsistent, and difficult to scale. This thesis investigates the landscape of auto matedpromptoptimization,analyzingrecentadvancementssuchasnaturallanguage gradient-based refinement, Bayesian Optimization for discrete prompt tuning, evolu tionary strategies, and joint fine-tuning approaches. Through a comprehensive com parison of these techniques, the study identifies key trends, limitations, and opportu nities in existing methods. Building on these insights, we propose a novel framework that aims to combine the interpretability of natural language-based refinements with the efficiency of automated search strategies. Experimental evaluations demonstrate improvedtaskperformanceandpromptrobustnessacrossmultipleLLMbenchmarks. This research contributes a unified perspective on automated prompt optimization and paves the way for more adaptive and accessible prompt engineering methodolo gies.

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Supervised by Ms. Jibon Naher, Lecturer, Department of Computer Science and Engineering (CSE) Islamic University of Technology (IUT) Board Bazar, Gazipur, Bangladesh This thesis is submitted in partial fulfillment of the requirement for the degree of Bachelor of Science in Software Engineering, 2025

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