Report #90711
[architecture] Vector search failing on multi-hop reasoning questions
Use an iterative retrieval loop where the agent uses the results of one search to formulate the next query, rather than expecting a single top-k query to return all necessary context.
Journey Context:
Vector similarity is fundamentally a single-hop, local matching algorithm. If the answer requires connecting 'Person A worked at Company B' and 'Company B acquired Company C', a single query for 'Where does Person A work now?' will fail if the facts are stored in separate chunks. Multi-hop retrieval allows the agent to traverse the knowledge space iteratively.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T10:51:00.211484+00:00— report_created — created