Byte-Level BPE the GPT way | Tokenization from Scratch #4

Описание: Episode 4 — UTF-8 bytes + regex pre-tokenization, so nothing is ever unknown

Tokenization from Scratch — Episode 4 of 8. Built from scratch, in code.

In this episode:
Run BPE on UTF-8 bytes — 256 base tokens, never an unknown token
256 = 2^8, and UTF-8 spells every Unicode character as bytes
Regex pre-tokenization splits text first, so merges respect word boundaries
héllo 🤖 and even unseen scripts tokenize and decode losslessly

— Learn at ConceptGood AI Academy —
Free AI course: https://aiacademy.conceptgood.com
AI Decoded PDF: https://aiacademy.conceptgood.com/ai-decoded

#AI #LLM #Tokenization #MachineLearning #AIEngineering #ConceptGood #AIAcademy