The math behind Attention: Keys, Queries, and Values matrices

This is the second of a series of 3 videos where we demystify Transformer models and explain them with visuals and friendly examples. Video 1: The attention mechanism in high level https://youtu.be/OxCpWwDCDFQ Video 2: The attention mechanism with math (this one) Video 3: Transformer models https://www.youtube.com/watch?v=qaWMOYf4ri8 If you like this material, check out LLM University from Cohere! https://llm.university 00:00 Introduction 01:18 Recap: Embeddings and Context 04:46 Similarity 11:09 Attention 20:46 The Keys and Queries Matrices 25:02 The Values Matrix 28:41 Self and Multi-head attention 33:54: Conclusion