AIHacker Noonabout 6 hours ago
Building an LLM: Tokenization and Data Prep
16 min read
Tokenization splits text into chunks called tokens, which models see instead of letters or words. Byte Pair Encoding (BPE) merges frequent character pairs into tokens, with vocabularies of 30,000 to 130,000 tokens. One token equals roughly 0.75 words.
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