T4-R6 in five minutes
Missed retrieval: the passage exists and was not returned.
Empty notes: the passage does not exist and the model should refuse.
Distractor: a similar passage is the wrong one.
Stale note: the text is old. Date the note.
Lab 06 is a small ablation of keyword versus a naive neighbor. Confirm before you treat it as your corpus.
Label the failure before you change the prompt. A prompt rewrite does not fix a missed index.
Sources and go deeper
- Lewis and co-authors, Retrieval-Augmented Generation for Knowledge-Intensive NLP Tasks, 2020 paper last checked 2026-10
- OWASP Top 10 for Large Language Model Applications community last checked 2026-10
- Retrieval-augmented generation — Wikipedia wikipedia last checked 2026-10