Why These Documents? Explainable Generative Retrieval with Hierarchical Category Paths

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HyPE conducts a pseudo-reasoning process by generating the hierarchical category path step-by-step to decode docid, allowing it to serve as an explanation which enhances explainability.

Why HyPE?

Consistently improves retrieval accuracy across diverse docid formats

Generates high-quality explanations preferred by human judges

Helps users identify relevant documents with higher accuracy and confidence

Better Decisions in Realistic Search Scenarios

Like in Google search, users often judge relevance from titles and short snippets alone.
HYPE's category paths provide clarity—enabling accurate selections and confident decisions.

Try a query

Conventional Search Engine Result

Hard to judge relevance from title and snippet alone

Search Results with HyPE: Path → Document

Search process reveals why each document is retrieved