A Lightweight Multi-Expert Generative Language Model System for Engineering Information and Knowledge Extraction

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Hauptverfasser: Bogachov, Bogdan, Zhao, Yaoyao Fiona
Format: Preprint
Veröffentlicht: 2025
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author Bogachov, Bogdan
Zhao, Yaoyao Fiona
author_facet Bogachov, Bogdan
Zhao, Yaoyao Fiona
contents Despite recent advancements in domain adaptation techniques for large language models, these methods remain computationally intensive, and the resulting models can still exhibit hallucination issues. Most existing adaptation methods do not prioritize reducing the computational resources required for fine-tuning and inference of language models. Hallucination issues have gradually decreased with each new model release. However, they remain prevalent in engineering contexts, where generating well-structured text with minimal errors and inconsistencies is critical. This work introduces a novel approach called the Small Language Graph (SLG), which is a lightweight adaptation solution designed to address the two key challenges outlined above. The system is structured in the form of a graph, where each node represents a lightweight expert - a small language model fine-tuned on specific and concise texts. The results of this study have shown that SLG was able to surpass conventional fine-tuning methods on the Exact Match metric by 3 times. Additionally, the fine-tuning process was 1.7 times faster compared to that of a larger stand-alone language model. These findings introduce a potential for small to medium-sized engineering companies to confidently use generative AI technologies, such as LLMs, without the necessity to invest in expensive computational resources. Also, the graph architecture and the small size of expert nodes offer a possible opportunity for distributed AI systems, thus potentially diverting the global need for expensive centralized compute clusters.
format Preprint
id arxiv_https___arxiv_org_abs_2505_21109
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle A Lightweight Multi-Expert Generative Language Model System for Engineering Information and Knowledge Extraction
Bogachov, Bogdan
Zhao, Yaoyao Fiona
Computation and Language
Artificial Intelligence
Computational Engineering, Finance, and Science
Information Retrieval
Machine Learning
I.2.7; I.2.1; I.5.1; I.2.6; H.3.1
Despite recent advancements in domain adaptation techniques for large language models, these methods remain computationally intensive, and the resulting models can still exhibit hallucination issues. Most existing adaptation methods do not prioritize reducing the computational resources required for fine-tuning and inference of language models. Hallucination issues have gradually decreased with each new model release. However, they remain prevalent in engineering contexts, where generating well-structured text with minimal errors and inconsistencies is critical. This work introduces a novel approach called the Small Language Graph (SLG), which is a lightweight adaptation solution designed to address the two key challenges outlined above. The system is structured in the form of a graph, where each node represents a lightweight expert - a small language model fine-tuned on specific and concise texts. The results of this study have shown that SLG was able to surpass conventional fine-tuning methods on the Exact Match metric by 3 times. Additionally, the fine-tuning process was 1.7 times faster compared to that of a larger stand-alone language model. These findings introduce a potential for small to medium-sized engineering companies to confidently use generative AI technologies, such as LLMs, without the necessity to invest in expensive computational resources. Also, the graph architecture and the small size of expert nodes offer a possible opportunity for distributed AI systems, thus potentially diverting the global need for expensive centralized compute clusters.
title A Lightweight Multi-Expert Generative Language Model System for Engineering Information and Knowledge Extraction
topic Computation and Language
Artificial Intelligence
Computational Engineering, Finance, and Science
Information Retrieval
Machine Learning
I.2.7; I.2.1; I.5.1; I.2.6; H.3.1
url https://arxiv.org/abs/2505.21109