Datasets:
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---
license: apache-2.0
task_categories:
- text-generation
language:
- en
tags:
- data-juicer
- pretraining
size_categories:
- 10M<n<100M
---
# RedPajama -- CommonCrawl-2021-04 (refined by Data-Juicer)
A refined version of CommonCrawl-2021-04 dataset in RedPajama by [Data-Juicer](https://github.com/alibaba/data-juicer). Removing some "bad" samples from the original dataset to make it higher-quality.
This dataset is usually used to pretrain a Large Language Model.
**Notice**: Here is a small subset for previewing. The whole dataset is available [here](https://dail-wlcb.oss-cn-wulanchabu.aliyuncs.com/LLM_data/our_refined_datasets/pretraining/redpajama-cc-refine-results/redpajama-cc-2021-04-refine-result.jsonl) (About 284GB).
## Dataset Information
- Number of samples: 44,724,752 (Keep ~45.23% from the original dataset)
## Refining Recipe
```yaml
# global parameters
project_name: 'Data-Juicer-recipes-cc-2021-04'
dataset_path: '/path/to/your/dataset' # path to your dataset directory or file
export_path: '/path/to/your/dataset.jsonl'
np: 50 # number of subprocess to process your dataset
open_tracer: true
# process schedule
# a list of several process operators with their arguments
process:
- document_simhash_deduplicator:
tokenization: space
window_size: 6
lowercase: true
ignore_pattern: '\p{P}'
num_blocks: 6
hamming_distance: 4
- clean_email_mapper:
- clean_links_mapper:
- fix_unicode_mapper:
- punctuation_normalization_mapper:
- whitespace_normalization_mapper:
- alphanumeric_filter:
tokenization: false
min_ratio: 0.7494 # 3sigma
max_ratio: 0.8595 # 3sigma -- 1001790
- average_line_length_filter: # for code
max_len: 1500 # < 3sigma (2817) -- 541131
- character_repetition_filter:
rep_len: 10
max_ratio: 0.3 # > 3sigma (0.1463) -- 159152
- flagged_words_filter:
lang: en
tokenization: true
max_ratio: 0.0019 # 3sigma -- 184714
- language_id_score_filter: # remove language filter
min_score: 0.786 # 3sigma -- 1995115
- maximum_line_length_filter: # for code
max_len: 5000 # < 3sigma -- 1076085
- perplexity_filter:
lang: en
max_ppl: 5000 # < 3sigma -- 906649
- special_characters_filter:
min_ratio: 0.15 # > 3sigma
max_ratio: 0.35 # > 3sigma -- 1046590
- text_length_filter:
max_len: 61592 # 3sigma -- 1114727
- words_num_filter:
lang: en
tokenization: true
min_num: 20 # > 3sigma
max_num: 12241 # 3sigma -- 1120334
- word_repetition_filter:
lang: en
tokenization: true
rep_len: 10
max_ratio: 0.3105 # 3sigma -- 2234933
``` |