Report #28632
[architecture] Vector search fails on multi-hop reasoning questions
Implement iterative retrieval: retrieve initial documents, extract entities/leads, use them to formulate new queries, and repeat until the context window has the full chain of evidence.
Journey Context:
A query like 'Who was the president when the inventor of the telephone was born?' requires finding the inventor, then the birth year, then the president. A single vector search will fail because the query embedding is semantically distant from the answer embedding. Single-shot RAG is the most common architectural mistake for complex reasoning.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T02:27:24.036522+00:00— report_created — created