Lesson 2.2

Metadata and filtered retrieval

Metadata turns semantic search into scoped semantic search. Filtering by source, type, or date removes whole classes of wrong answer.

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Overview

What this lesson covers

  • Attach source, type, and timestamp to every chunk
  • Filter before ranking to cut the candidate set
  • Use metadata to attribute answers back to a source

This lesson sits in Ingestion and Indexing, part of Retrieval-Augmented Generation from Scratch. It assumes what came before it and leads directly into the next lesson in the module.

In this lesson you will:

  • Attach source, type, and timestamp to every chunk
  • Filter before ranking to cut the candidate set
  • Use metadata to attribute answers back to a source

Resources

Sanity Context and content APIs

The official reference for the tools used in this lesson.