1 5 Byte Pair Encoding

3-Second Blueprint (English)

1. Byte Pair Encoding initializes its vocabulary with individual characters plus an end-of-word marker rather than fixed whitespace words.
2. During training, the token learner iteratively merges the most frequent adjacent symbol pair k times to induce new subword vocabulary tokens.
3. At inference, learned merge rules apply greedily in training order, naturally segmenting rare words into frequent roots and morpheme affixes.