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Main Authors: Rupprecht, Sophia, Hounat, Yassine, Kumar, Monisha, Lastrucci, Giacomo, Schweidtmann, Artur M.
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2503.17004
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author Rupprecht, Sophia
Hounat, Yassine
Kumar, Monisha
Lastrucci, Giacomo
Schweidtmann, Artur M.
author_facet Rupprecht, Sophia
Hounat, Yassine
Kumar, Monisha
Lastrucci, Giacomo
Schweidtmann, Artur M.
contents As large language models have shown remarkable capabilities in conversing via natural language, the question arises as to how LLMs could potentially assist chemical engineers in research and industry with domain-specific tasks. We generate dynamic chemical reactor models in Modelica code format from textual descriptions as user input. We fine-tune Llama 3.1 8B Instruct on synthetically generated Modelica code for different reactor scenarios. We compare the performance of our fine-tuned model to the baseline Llama 3.1 8B Instruct model and GPT4o. We manually assess the models' predictions regarding the syntactic and semantic accuracy of the generated dynamic models. We find that considerable improvements are achieved by the fine-tuned model with respect to both the semantic and the syntactic accuracy of the Modelica models. However, the fine-tuned model lacks a satisfactory ability to generalize to unseen scenarios compared to GPT4o.
format Preprint
id arxiv_https___arxiv_org_abs_2503_17004
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Text2Model: Generating dynamic chemical reactor models using large language models (LLMs)
Rupprecht, Sophia
Hounat, Yassine
Kumar, Monisha
Lastrucci, Giacomo
Schweidtmann, Artur M.
Programming Languages
Computation and Language
As large language models have shown remarkable capabilities in conversing via natural language, the question arises as to how LLMs could potentially assist chemical engineers in research and industry with domain-specific tasks. We generate dynamic chemical reactor models in Modelica code format from textual descriptions as user input. We fine-tune Llama 3.1 8B Instruct on synthetically generated Modelica code for different reactor scenarios. We compare the performance of our fine-tuned model to the baseline Llama 3.1 8B Instruct model and GPT4o. We manually assess the models' predictions regarding the syntactic and semantic accuracy of the generated dynamic models. We find that considerable improvements are achieved by the fine-tuned model with respect to both the semantic and the syntactic accuracy of the Modelica models. However, the fine-tuned model lacks a satisfactory ability to generalize to unseen scenarios compared to GPT4o.
title Text2Model: Generating dynamic chemical reactor models using large language models (LLMs)
topic Programming Languages
Computation and Language
url https://arxiv.org/abs/2503.17004