metadata
license: odc-by
A cleaned, deduplicated, and decontaminated version of C4 (noblocklist).
Cleaning
Documents with non-English content, advertisements, large chunks of repetitions, and other low-quality content are heuristically removed.
Deduplication
This dataset has been glabally deduplicated based on exact matches, and cross-deduplicated with OpenWebText2 and CC-News.
Decontamination
More than 25K documents are removed during decontamination 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)
- MBPP (all 974 questions)
- GPQA (diamond)
Dataset Statistics
Number of samples: 301,031,364.
Size of downloaded parquet files: 484G.