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Hallucination-Free RAG: Making LLMs Safe for Healthcare

May 06, 2024 - mattyyeung.github.io
The article discusses "Deterministic Quoting" (DQ), a technique developed by Invetech to improve the reliability of Language Learning Models (LLMs) in healthcare applications. DQ ensures that quotations from source material are verbatim and not hallucinated, thereby reducing the risk of misinformation. The technique involves sending LLM outputs to a separate module that replaces potentially hallucinated quotations with verbatim copies directly from the source material. This method guarantees that any information displayed on a blue background is a direct, unaltered quote from the source material.

The article also presents preliminary data showing that DQ does not degrade the overall quality of answers provided by LLMs. It suggests that DQ can be particularly beneficial in fields where hallucinations are problematic, such as healthcare. However, the authors acknowledge that while DQ significantly improves the reliability of LLMs, there is still work to be done before these systems can be considered safe for widespread use in healthcare.

Key takeaways:

  • Invetech is developing a technique called "Deterministic Quoting" to ensure that quotations from source material used by Large Language Models (LLMs) are verbatim and not hallucinated, thus increasing their reliability in fields like healthcare.
  • Deterministic Quoting works by ensuring that the data displayed on a blue background has never passed through an LLM or any non-deterministic AI model, thus guaranteeing it to be hallucination-free.
  • Even with a basic implementation, Deterministic Quoting shows significant improvement over the current state-of-the-art, and future versions can provide further improvements to the quality of answers and flexibility when parsing a wide range of input documentation.
  • While Deterministic Quoting is beneficial in healthcare, it can also be applied in other fields such as systems with knowledge of legislation, financial regulation, or works of literature.
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