AI & MLCoreAIML-LM-019
Subword Tokenization: Byte-Pair Encoding
Learning a vocabulary by merging frequent symbol pairs: the tokenizer most LLMs use and its side effects.
- Difficulty
- 2 / 5
- Importance
- 5 / 5
- Study time
- 1–2 h
- Kind of work
- Mixed
Why it matters
The learner can run BPE merges on a small corpus and explain how vocabulary size trades sequence length against rare-word handling.