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A cleaned version of OpenWebText2 by removing non-English, duplicated, copyrighted, and low-quality (too short, too many special characters, etc) samples.

This dataset has also been decontaminated with respect to the following benchmarks based on n-gram overlap:

  • GLUE (dev set of SST-2, CoLA, QQP, WNLI, RTE, QNLI, MNLI; test set of MPRC)
  • SIQA, PIQA, QASC, CSQA, HellaSWAG (all dev set)
  • CONLL 2003
  • BLIMP
  • MAIN
  • BoolQ (dev set)
  • WinoGrande (dev set)
  • ANLI (test set)
  • ARC easy and challenge (test set)
  • RACE middle and high (test set)
  • MMLU (dev, val, and test sets)
  • MATH, GSM8K (test set)
  • HumanEval (test set)
  • GPQA (diamond)

4,096 documents are removed in this step.

Dataset Statistics

Total number of samples: 13,071,217.

Size of downloaded parquet files: 34G.

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