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About this paper

Cuize Han, Sesh Jalagam

Researchers from Box AI Platform developed an optimized framework for metadata extraction from legal documents, leveraging existing Large Language Models (LLMs) through a multi-stage pipeline. The system achieved improved F1 scores on contract datasets, reduced operational costs, and provided a practical, scalable solution for enterprise environments.

Key insights

  • Optimal text conversion is foundational, as its quality directly impacts downstream extraction accuracy and efficiency.
  • Strategic chunk selection significantly reduces LLM token usage and costs while boosting extraction quality, especially in scenarios with limited context windows.
  • Combining Chain of Thought prompting with structured output through tool calling effectively improves LLM performance and reliability for complex fields, though effectiveness is model-dependent.
  • An LLM can effectively act as a 'judge' for post-processing, validating and correcting initial extraction outputs and enabling privacy-preserving system monitoring.

Summary by alphaXiv.

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