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fineweb_00.npy
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4,000,000,000
fineweb_01.npy
1,000,000,000
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fineweb_02.npy
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4,000,000,000
fineweb_03.npy
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4,000,000,000
fineweb_04.npy
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4,000,000,000
fineweb_05.npy
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4,000,000,000
fineweb_06.npy
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4,000,000,000
fineweb_07.npy
1,000,000,000
4,000,000,000
fineweb_08.npy
140
560
held_out_web.npy
1,000,000
4,000,000

prepretraining-web-v1

FineWeb (unfiltered) tokenized web data for pre-pretraining experiments. Split into 1B-token .npy chunks. GPT-NeoX tokenizer, uint32 format.

Dataset Info

  • Rows: 10
  • Columns: 3

Columns

Column Type Description
filename Value('string') Name of the .npy file
token_count Value('int64') Number of uint32 token IDs in the file
size_bytes Value('int64') File size in bytes

Generation Parameters

{
  "script_name": "data/upload_data.py",
  "model": "N/A (pre-tokenized training data, not model outputs)",
  "description": "FineWeb (unfiltered) tokenized web data for pre-pretraining experiments. Split into 1B-token .npy chunks. GPT-NeoX tokenizer, uint32 format.",
  "tokenizer": "allenai/gpt-neox-olmo-dolma-v1_5",
  "format": "Pre-tokenized uint32 .npy memmap arrays for OLMo-core",
  "source": "HuggingFaceFW/fineweb",
  "subset": "sample-10BT",
  "vocab_size": 50280,
  "eos_token_id": 50279,
  "total_train_tokens": 8000000140,
  "held_out_tokens": 1000000,
  "chunk_size": 1000000000,
  "num_chunks": 9,
  "seed": 42,
  "hyperparameters": {},
  "input_datasets": []
}

Experiment Documentation

For complete experiment details, see https://github.com/Zayne-sprague/SC-Research-Notes/tree/main/experiments/prepretraining

Usage

from datasets import load_dataset

dataset = load_dataset("reasoning-degeneration-dev/prepretraining-web-v1", split="train")
print(f"Loaded {len(dataset)} rows")

This dataset is tracked in reasoning-degeneration-dev/PROJECT-MANIFEST

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