Mastery: connect the pieces

1. Idea — RAG finds external evidence then generates from it. Quality is a chain—ingest, chunk, index, retrieve, augment, generate, cite—not a single model trick.…
2. Mechanism — Ingest and chunk sources, embed/index, rewrite/retrieve/rerank, pack prompt with citations, generate, validate support.…
3. Controls — chunk size, embedding model, hybrid weights, top-k, reranker, context budget, citation format
4. Tradeoff — Small chunks retrieve precisely but lose surrounding context; large chunks preserve context but dilute matches. Higher top-k improves recall while adding distra…
5. Failures — Missed chunk; Distractor packing
6. Metrics — recall@5, citation entailment, p95 latency, freshness lag, abstain quality
7. Ship rule — Ship when recall@5≥0.90 on 20 gold questions and citation support ≥0.85 on sampled answers.

Neighboring layers (retrieval, serving, policy, human review) still own what RAG pipeline stages cannot on the vacation-policy Q&A. Do not ask this chapter’s dial to replace permissions or source truth.

Mastery is transfer: take RAG pipeline stages into a second scenario that is not the vacation-policy Q&A and rebuild the checklist without copying sentences. If you can only recite this chapter’s examples for RAG pipeline stages, you have memorized a story, not a model.

Also pin one numeric memory from this RAG pipeline stages chapter: if 18 of 20 test questions retrieve at least one relevant chunk in top 5, recall@5 = 18/20 = 0.90 That number is not decoration; it is a template for how claims about RAG pipeline stages on the vacation-policy Q&A should look in design docs. Scoped specifically to RAG pipeline stages / vacation-policy Q&A / mastery-connect.

People confuse RAG pipeline stages with neighboring buzzwords when debugging the vacation-policy Q&A. Before changing prompts, ask whether the broken stage was evidence gathering, the RAG pipeline stages judgment itself, validation, or the product action. Fixing the wrong stage creates folklore (“we tried RAG pipeline stages and it failed”) that blocks the next team on the vacation-policy Q&A. Scoped specifically to RAG pipeline stages / vacation-policy Q&A / mastery-connect.

Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to rag pipeline steps rather than generic AI advice.

Write a five-line artifact for this page: goal, inputs, check, owner, stop rule. Invent one fluent failure that the check would catch. Keep details specific to rag pipeline steps rather than generic AI advice.