Question 510 (Select TWO)
Select TWO: the immediate change and one ongoing control for this Databricks GenAI case. Hybrid search retrieves the right troubleshooting note at rank 18 yet generation uses only the first five hits.
Explanation
Correct Answers
Correct (immediate corrective action). Rerank a sufficiently broad candidate pool then pass a smaller high-relevance set to the LLM. In this scenario, Hybrid search retrieves the right troubleshooting note at rank 18 yet generation uses only the first five hits. The governing mechanism is: A reranker scores query-document relevance over a candidate set; it improves ordering but does not add missing documents. One selected option addresses the immediate workflow, while the other guards the same failure mode after deployment. Both satisfy the TWO-part requirement.
Correct (continuing risk control). Do not attribute an absent document to reranking failure if the first-stage search never returned it. In this scenario, Hybrid search retrieves the right troubleshooting note at rank 18 yet generation uses only the first five hits. The governing mechanism is: A reranker scores query-document relevance over a candidate set; it improves ordering but does not add missing documents. One selected option addresses the immediate workflow, while the other guards the same failure mode after deployment. Both satisfy the TWO-part requirement.
Incorrect Answers
Not the strongest safeguard choice for this specific question. Use an OCR-capable extraction step, evaluate recognition quality and retain source page provenance. This action primarily relates to Format-specific document extraction and OCR needs: Extract text with a parser suited to source format; image-only scans require OCR rather than HTML or plain-text parsing. However, the described case — Hybrid search retrieves the right troubleshooting note at rank 18 yet generation uses only the first five hits. — is testing Cross-encoder reranking after candidate retrieval. It does not directly establish the safeguard outcome or constraint that the question requires; it may still be useful in a different stage or incident.
Not the strongest safeguard choice for this specific question. Retain source offsets and section IDs so citations remain traceable after rechunking. This action primarily relates to Semantic boundaries versus fixed-window chunks: Headings, paragraphs and tables can require structure-aware splitting rather than arbitrary token windows. However, the described case — Hybrid search retrieves the right troubleshooting note at rank 18 yet generation uses only the first five hits. — is testing Cross-encoder reranking after candidate retrieval. It does not directly establish the safeguard outcome or constraint that the question requires; it may still be useful in a different stage or incident.