A comprehensive tutorial demonstrating how to build a vector search engine from scratch using Python. Covers the three core steps of vector search: converting text to numerical vectors, calculating similarity using cosine similarity, and retrieving the most relevant results. Includes practical code examples with NumPy and

6m read timeFrom machinelearningmastery.com
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Table of contents
How Does Vector Search Work?Step 1: Setting Up the EnvironmentStep 2: Creating a Toy Dataset and Word EmbeddingsStep 3: Converting Sentences to VectorsStep 4: Implementing Cosine SimilarityStep 5: Building the Vector Search FunctionStep 6: Visualizing the VectorsWhy This Matters for RAGConclusion

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