Empowering CamemBERT Legal Entity Extraction With LLM Boostrapping
摘要
The legal industry is characterized by the presence of large volumes and complex documents. Given the continuous evolution of these documents, there is a growing interest in automating the processing of legal texts to streamline compliance. One key step of this process is the extraction of legal entities. State-of-the-art methods for legal entity extraction, including rule-based systems, Bi-LSTM, and BERT, require substantial annotated data to be effective, a task that is time-intensive for domain experts. With the rise of Large Language Models (LLMs), research has increasingly focused on leveraging their capabilities and exploring zero-shot approaches. In this paper, we present a hybrid system that distils GPT-4 knowledge through rule-based methods into a CamemBERT model. This approach not only reduces the need for expert involvement compared to the standard CamemBERT system but also outperforms the GPT-4-only system, enhancing the F1 score for legal entities by 9–24% points.