Be10x · Daily Drop

Your demo works.
Your handbook doesn't.

Five drops on RAG engineering — foundations and optimisation in one week. You already know what RAG is. This is why yours returns the wrong paragraph, and the five stages that fix it.

One failure, the whole syllabus
“How many casual leaves do I get, and do unused ones carry over?”
Retrieved · rank 1 §4.4 Earned Leave — 18 days a year, up to 30 days carried forward.
Correct · rank 7 §4.2 Casual Leave — 12 days a year, lapsing on 31 December.

The two policies are written in almost identical language, so they sit almost on top of each other in embedding space. The model answers confidently, and wrongly. Everything this week comes out of fixing that one result.

IndexRetrieveRerank GenerateEvaluate
MonPDF
Closest is not correct
A 12-slide deck across the whole pipeline. Swipe through it, or hit Save as PDF.
TueHands-on
The retrieval bench
Tune six controls until all five golden-set questions pass, then diagnose six real failures.
WedInteractive
Why yours returns the wrong paragraph
Six live widgets — watch the right chunk climb from rank 7 to rank 1.
ThuFlash cards
Twelve ideas between question and answer
Chunks, embeddings, BM25, fusion, rerankers, faithfulness. Tap to flip.
FriQuiz
Ten questions on making retrieval work
Foundations and optimisation, with an explanation after every answer.

This week covers both sessions — Foundations & Retrieval Design and Advanced Pipelines & Optimization — as one arc. Every drop runs the full pipeline, so start on any day; Monday's deck lays down the vocabulary the rest build on.