Designing Domain-Specific Large Language Models: The Critical Role of Fine-Tuning in Public Opinion Simulation

• URL: http://arxiv.org/abs/2409.19308v2
• Date: Sat, 07 Dec 2024 11:06:45 GMT
• Title: Designing Domain-Specific Large Language Models: The Critical Role of Fine-Tuning in Public Opinion Simulation
• Authors: Haocheng Lin,
• Abstract summary: This paper introduces a novel fine-tuning approach that integrates socio-demographic data from the UK Household Longitudinal Study. By emulating diverse synthetic profiles, the fine-tuned models significantly outperform pre-trained counterparts. Its broader implications include deploying LLMs in domains like healthcare and education, fostering inclusive and data-driven decision-making.
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• Abstract: Large language models (LLMs) have transformed natural language processing, yet face challenges in specialized tasks such as simulating opinions on environmental policies. This paper introduces a novel fine-tuning approach that integrates socio-demographic data from the UK Household Longitudinal Study, uniquely using profiling factors, such as age, gender, income, education, and region. This method enhances the accuracy and representation of generated views. By emulating diverse synthetic profiles, the fine-tuned models significantly outperform pre-trained counterparts, achieving measurable improvements in capturing demographic nuances. Evaluation metrics, including Chi-Squared, Cosine Similarity, Jaccard Index, and KL-divergence, reveal a strong alignment between synthetic and real-world opinions. This work demonstrates the potential of fine-tuned LLMs tailored to societal contexts to enable more ethical and precise policy simulations. Its broader implications include deploying LLMs in domains like healthcare and education, fostering inclusive and data-driven decision-making in both research and practice.

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