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Vector Databases: Pinecone, Weaviate & pgvector · Lesson

Similarity Search Explained

Understand the algorithms and mechanisms behind finding similar items using vector distance metrics.

Finding What's Alike

You know vectors and embeddings — now see how vector databases use them to find items that are alike. That process is similarity search.

Vectors: Your Data's Coordinates

An embedding is just coordinates in a space, like [0.1, 0.5, -0.2]. Similarity search compares them: close coordinates mean similar original items.

All lessons in this course

  1. What are Vector Databases?
  2. Embeddings: The Core Concept
  3. Similarity Search Explained
  4. Distance Metrics and Indexing Basics
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