LLMs-from-scratch/ch02/05_bpe-from-scratch

Byte Pair Encoding (BPE) Tokenizer From Scratch

• bpe-from-scratch-simple.ipynb contains optional (bonus) code that explains and shows how the BPE tokenizer works under the hood; this is geared for simplicity and readability.

• bpe-from-scratch.ipynb implements a more sophisticated (and much more complicated) BPE tokenizer that behaves similarly as tiktoken with respect to all the edge cases; it also has additional funcitionality for loading the official GPT-2 vocab.