First Move (11~18) - Code, Learn, Build
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First Move (11~18) - Code, Learn, Build

Structured, level-based technology learning paths from foundational exploration to industry mastery.

Learning Domains

  • Python Programming (Active)
  • Computer Science Core
  • Web Development
  • AI & Machine Learning

Platform Architecture

  • Level-Based Progression
  • Decoupled Content Schema
  • Modular Code Execution Engine
  • Curated Official Resources

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← Generative AI & LLM Agents|Level 1: AI & Large Language Model Foundations

2. Vector Embeddings & Semantic Similarity Search

Lesson 2 of 6
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Vector Embeddings & Semantic Similarity Search

Convert unstructured text into high-dimensional dense vector embeddings, compute Cosine Similarity, and store vectors in databases.

Vector Spaces & Similarity Metrics

### Dense Vector Embeddings Embedding models transform text into high-dimensional floating-point vectors (e.g., 1536 dimensions) where semantically similar concepts reside close to one another in vector space. **Cosine Similarity** measures the angle between vectors: $$ ext{Cosine Similarity} = rac{mathbf{A} cdot mathbf{B}}{|mathbf{A}| |mathbf{B}|}$$
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