Investigating the Role of LLMs Hyperparameter Tuning and Prompt Engineering to Support Domain Modeling

Fuente: arXiv
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Autori principali: Bulhakov, Vladyslav, d'Aloisio, Giordano, Di Sipio, Claudio, Di Marco, Antinisca, Di Ruscio, Davide
Natura: Preprint
Pubblicazione: 2025
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author Bulhakov, Vladyslav
d'Aloisio, Giordano
Di Sipio, Claudio
Di Marco, Antinisca
Di Ruscio, Davide
author_facet Bulhakov, Vladyslav
d'Aloisio, Giordano
Di Sipio, Claudio
Di Marco, Antinisca
Di Ruscio, Davide
contents The introduction of large language models (LLMs) has enhanced automation in software engineering tasks, including in Model Driven Engineering (MDE). However, using general-purpose LLMs for domain modeling has its limitations. One approach is to adopt fine-tuned models, but this requires significant computational resources and can lead to issues like catastrophic forgetting. This paper explores how hyperparameter tuning and prompt engineering can improve the accuracy of the Llama 3.1 model for generating domain models from textual descriptions. We use search-based methods to tune hyperparameters for a specific medical data model, resulting in a notable quality improvement over the baseline LLM. We then test the optimized hyperparameters across ten diverse application domains. While the solutions were not universally applicable, we demonstrate that combining hyperparameter tuning with prompt engineering can enhance results across nearly all examined domain models.
format Preprint
id arxiv_https___arxiv_org_abs_2507_14735
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Investigating the Role of LLMs Hyperparameter Tuning and Prompt Engineering to Support Domain Modeling
Bulhakov, Vladyslav
d'Aloisio, Giordano
Di Sipio, Claudio
Di Marco, Antinisca
Di Ruscio, Davide
Software Engineering
The introduction of large language models (LLMs) has enhanced automation in software engineering tasks, including in Model Driven Engineering (MDE). However, using general-purpose LLMs for domain modeling has its limitations. One approach is to adopt fine-tuned models, but this requires significant computational resources and can lead to issues like catastrophic forgetting. This paper explores how hyperparameter tuning and prompt engineering can improve the accuracy of the Llama 3.1 model for generating domain models from textual descriptions. We use search-based methods to tune hyperparameters for a specific medical data model, resulting in a notable quality improvement over the baseline LLM. We then test the optimized hyperparameters across ten diverse application domains. While the solutions were not universally applicable, we demonstrate that combining hyperparameter tuning with prompt engineering can enhance results across nearly all examined domain models.
title Investigating the Role of LLMs Hyperparameter Tuning and Prompt Engineering to Support Domain Modeling
topic Software Engineering
url https://arxiv.org/abs/2507.14735