Update README.md
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harshit-gupta
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README.md
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### Supported Tasks and Leaderboards
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RefinedWeb is intended to be
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### Languages
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RefinedWeb
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## Dataset Structure
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We applied extensive preprocessing and cleaning of the data, using our Macrodata Refinement Pipeline.
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We first filter URLs to remove adult content using a blocklist and a
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Finally, we run extensive deduplication, removing URLs revisited across dumps and performing subsequently fuzzy and exact substring deduplication.
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### Opt-out request
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RefinedWeb is based on [CommonCrawl](https://commoncrawl.org/). Their crawler
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To remove a document from RefinedWeb, please message falconllm@tii.ae.
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### Supported Tasks and Leaderboards
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RefinedWeb is intended to be primarily used as a pretraining dataset for large language models. Practitioners may leverage it for upstream evaluation with a validation loss, but we do not provide any canonical split.
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### Languages
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RefinedWeb primarily contains English.
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## Dataset Structure
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We applied extensive preprocessing and cleaning of the data, using our Macrodata Refinement Pipeline.
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We first filter URLs to remove adult content using a blocklist and a scoring system, we then use `trafilatura` to extract content from pages and perform language identification with the `fastText` classifier from CCNet ([Wenzek et al., 2019](https://arxiv.org/abs/1911.00359)). After this first preprocessing stage, we filter data using heuristics from MassiveWeb ([Rae et al., 2021](https://arxiv.org/abs/2112.11446)), and our own line-wise corrections.
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Finally, we run extensive deduplication, removing URLs revisited across dumps and performing subsequently fuzzy and exact substring deduplication.
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### Opt-out request
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RefinedWeb is based on [CommonCrawl](https://commoncrawl.org/). Their crawler honours opt-out requests in the `robots.txt`, see the [CC FAQ](https://commoncrawl.org/big-picture/frequently-asked-questions/) for details.
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To remove a document from RefinedWeb, please message falconllm@tii.ae.
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