LLM-enabled Instance Model Generation

• URL: http://arxiv.org/abs/2503.22587v1
• Date: Fri, 28 Mar 2025 16:34:29 GMT
• Title: LLM-enabled Instance Model Generation
• Authors: Fengjunjie Pan, Nenad Petrovic, Vahid Zolfaghari, Long Wen, Alois Knoll,
• Abstract summary: This work explores the generation of instance models using large language models (LLMs)<n>We propose a two-step approach: first, using LLMs to produce a simplified structured output containing all necessary instance model information, and then compiling this intermediate representation into a valid XMI file.<n>Results show that the proposed method significantly improves the usability of LLMs for instance model generation tasks.
• Score: 4.52634430160579
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In the domain of model-based engineering, models are essential components that enable system design and analysis. Traditionally, the creation of these models has been a manual process requiring not only deep modeling expertise but also substantial domain knowledge of target systems. With the rapid advancement of generative artificial intelligence, large language models (LLMs) show potential for automating model generation. This work explores the generation of instance models using LLMs, focusing specifically on producing XMI-based instance models from Ecore metamodels and natural language specifications. We observe that current LLMs struggle to directly generate valid XMI models. To address this, we propose a two-step approach: first, using LLMs to produce a simplified structured output containing all necessary instance model information, namely a conceptual instance model, and then compiling this intermediate representation into a valid XMI file. The conceptual instance model is format-independent, allowing it to be transformed into various modeling formats via different compilers. The feasibility of the proposed method has been demonstrated using several LLMs, including GPT-4o, o1-preview, Llama 3.1 (8B and 70B). Results show that the proposed method significantly improves the usability of LLMs for instance model generation tasks. Notably, the smaller open-source model, Llama 3.1 70B, demonstrated performance comparable to proprietary GPT models within the proposed framework.

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