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Coders In Hoods

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Course overview

Retrieval and Knowledge Systems

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1 · Building the index

1Embeddings in practice
2Chunking structured documents
3Vector indexes and databases
Exercise answers
- Answer: Tune an ANN index against a recall target
- Answer: Red-team tenant isolation (stretch)
4Measuring retrieval

2 · Retrieval that reasons

5Hybrid search and reranking
6Agentic retrieval
7Knowledge graphs and GraphRAG
8Long context versus RAG

CapstoneA measured retrieval service for cases and reference documents Reference implementation

Answers Lesson 3: Vector indexes and databases

Step-by-step answer

Stretch 60 min8 steps

Red-team tenant isolation (stretch)

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Previous answerTune an ANN index against a recall target Next answer Build and run a labelled query set

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