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license: apache-2.0
---

A cleaned version of [OpenWebText2](https://huggingface.co/datasets/defunct-datasets/the_pile_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](https://main.leibniz-zas.de/en/main-materials/main-materials/)
- 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.