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PropRAG: Guiding Retrieval with Beam Search over Proposition Paths

Created by
  • Haebom

Author

Jingjin Wang, Jiawei Han

Outline

To overcome the Limitations of Retrieval Augmented Generation (RAG), we introduce PropRAG, a novel RAG framework that utilizes context-rich propositions and discovers multi-stage inference paths via efficient beam search. Existing RAGs struggle with complex multi-stage inference due to their reliance on independent knowledge retrieval, and structured RAGs based on knowledge graphs suffer from context collapse of triples, resulting in low accuracy in knowledge representation. PropRAG achieves state-of-the-art zero-shot recall@5 and F1 score on the 2Wiki, HotpotQA, and MuSiQue datasets.

Takeaways, Limitations

Takeaways:
We overcome the limitations of existing RAGs and improve nonparametric knowledge integration through more accurate information retrieval and efficient inference path discovery.
We improved the accuracy of knowledge representation through context-rich proposition-based knowledge representation.
Multi-stage inference can be performed using efficient beam search even without LLM.
We achieved SOTA on 2Wiki, HotpotQA, and MuSiQue datasets.
Limitations:
Limitations stated in the paper was not presented.
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