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PG-19, tokenized with GPT-2 (yam)

PG-19 (Rae et al., DeepMind; dataset Apache-2.0, books public domain): ~28.6k books from Project Gutenberg published before 1919, here via the parquet conversion emozilla/pg19.

  • Format: uint16 little-endian GPT-2 tokens, no header; <|endoftext|> precedes each book.
  • Train: 1,375,552,154 tokens in 14 shards; validation: 4,640,281 tokens.
  • Used in yam as a narrative/fiction component of the pretraining mix.
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