I Assumed My Retriever Failed at Stage One. The Bigger Failure Was at Stage Three.
This story is from 2026-08-31. It is preserved in the archive; the latest stories are on the live feed.
Hierarchical retrieval is supposed to help on long documents. Pick the right chapter, then search inside it. Narrow the haystack, then find the needle. On my long-book benchmark it came third of five , behind a chapter-summary chain and flat chunk RAG, and only barely ahead of naively grabbing the…
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- 2026-08-31 16:38 · DEV Community — Machine Learning
I Assumed My Retriever Failed at Stage One. The Bigger Failure Was at Stage Three.
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