Instruction-Based Fine-tuning of Open-Source LLMs for Predicting Customer Purchase Behaviors

• URL: http://arxiv.org/abs/2502.15724v1
• Date: Tue, 28 Jan 2025 11:34:22 GMT
• Title: Instruction-Based Fine-tuning of Open-Source LLMs for Predicting Customer Purchase Behaviors
• Authors: Halil Ibrahim Ergul, Selim Balcisoy, Burcin Bozkaya,
• Abstract summary: The superior predictive capabilities of the fine-tuned Mistral Instruct model have been demonstrated.<n>The Mistral model significantly outperforms traditional sequential models.
• Score: 1.4440000007050255
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this study, the performance of various predictive models, including probabilistic baseline, CNN, LSTM, and finetuned LLMs, in forecasting merchant categories from financial transaction data have been evaluated. Utilizing datasets from Bank A for training and Bank B for testing, the superior predictive capabilities of the fine-tuned Mistral Instruct model, which was trained using customer data converted into natural language format have been demonstrated. The methodology of this study involves instruction fine-tuning Mistral via LoRA (LowRank Adaptation of Large Language Models) to adapt its vast pre-trained knowledge to the specific domain of financial transactions. The Mistral model significantly outperforms traditional sequential models, achieving higher F1 scores in the three key merchant categories of bank transaction data (grocery, clothing, and gas stations) that is crucial for targeted marketing campaigns. This performance is attributed to the model's enhanced semantic understanding and adaptability which enables it to better manage minority classes and predict transaction categories with greater accuracy. These findings highlight the potential of LLMs in predicting human behavior.

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