On the effectiveness of Large Language Models in the mechanical design domain

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Hauptverfasser: Grandi, Daniele, Riquelme, Fabian
Format: Preprint
Veröffentlicht: 2025
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author Grandi, Daniele
Riquelme, Fabian
author_facet Grandi, Daniele
Riquelme, Fabian
contents In this work, we seek to understand the performance of large language models in the mechanical engineering domain. We leverage the semantic data found in the ABC dataset, specifically the assembly names that designers assigned to the overall assemblies, and the individual semantic part names that were assigned to each part. After pre-processing the data we developed two unsupervised tasks to evaluate how different model architectures perform on domain-specific data: a binary sentence-pair classification task and a zero-shot classification task. We achieved a 0.62 accuracy for the binary sentence-pair classification task with a fine-tuned model that focuses on fighting over-fitting: 1) modifying learning rates, 2) dropout values, 3) Sequence Length, and 4) adding a multi-head attention layer. Our model on the zero-shot classification task outperforms the baselines by a wide margin, and achieves a top-1 classification accuracy of 0.386. The results shed some light on the specific failure modes that arise when learning from language in this domain.
format Preprint
id arxiv_https___arxiv_org_abs_2505_01559
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the effectiveness of Large Language Models in the mechanical design domain
Grandi, Daniele
Riquelme, Fabian
Computation and Language
Machine Learning
In this work, we seek to understand the performance of large language models in the mechanical engineering domain. We leverage the semantic data found in the ABC dataset, specifically the assembly names that designers assigned to the overall assemblies, and the individual semantic part names that were assigned to each part. After pre-processing the data we developed two unsupervised tasks to evaluate how different model architectures perform on domain-specific data: a binary sentence-pair classification task and a zero-shot classification task. We achieved a 0.62 accuracy for the binary sentence-pair classification task with a fine-tuned model that focuses on fighting over-fitting: 1) modifying learning rates, 2) dropout values, 3) Sequence Length, and 4) adding a multi-head attention layer. Our model on the zero-shot classification task outperforms the baselines by a wide margin, and achieves a top-1 classification accuracy of 0.386. The results shed some light on the specific failure modes that arise when learning from language in this domain.
title On the effectiveness of Large Language Models in the mechanical design domain
topic Computation and Language
Machine Learning
url https://arxiv.org/abs/2505.01559