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README.md

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 ---
 license: odc-by
 ---
+
+Chinese text cleaned from [C4](https://huggingface.co/datasets/allenai/c4) with the following steps:
+
+- documents containing non-Chinese, non-English text are removed
+- documents containing more than 30% English text are removed
+- all text in Traditional Chinese is converted into Simplified Chinese using [zhconv](https://github.com/gumblex/zhconv)
+- low-quality text (e.g. boilerplates, advertisements) are heuristically removed
+
+### statistics
+
+Number of samples: 32,485,463.
+
+Size of parquet files: 61G.

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