# Chapter 2: Working with Text Data

 
## Main Chapter Code

- [01_main-chapter-code](01_main-chapter-code) contains the main chapter code and exercise solutions

 
## Bonus Materials

- [02_bonus_bytepair-encoder](02_bonus_bytepair-encoder) contains optional code to benchmark different byte pair encoder implementations

- [03_bonus_embedding-vs-matmul](03_bonus_embedding-vs-matmul) contains optional (bonus) code to explain that embedding layers and fully connected layers applied to one-hot encoded vectors are equivalent.

- [04_bonus_dataloader-intuition](04_bonus_dataloader-intuition) contains optional (bonus) code to explain the data loader more intuitively with simple numbers rather than text.

- [05_bpe-from-scratch](05_bpe-from-scratch) contains (bonus) code that implements and trains a GPT-2 BPE tokenizer from scratch.