add dataset

README.md

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----
-license: odc-by
----
+This is a preprocessed version of the realnewslike subdirectory of C4, with 4 different vocabulary sizes: 32k, 64k, 128k and 256k
+
+C4 from: https://huggingface.co/datasets/allenai/c4
+
+Files generated by using SentencePieceTrainer https://github.com/google/sentencepiece and Megatron-LM https://github.com/NVIDIA/Megatron-LM/
+```py
+import sentencepiece as spm
+
+spm.SentencePieceTrainer.Train('--input=c4_dataset.txt --model_prefix=vp_sample_dataset --vocab_size=256000')
+```
+
+```bash
+python tools/preprocess_data.py \
+  --input 'c4/realnewslike/c4-train.0000[0-2]-of-00512.json' \
+  --partitions 8 \
+  --output-prefix c4 \
+  --vocab-file vp_sample_dataset.vocab \
+  --tokenizer-type GPTSentencePieceTokenizer \
+  --tokenizer-model vp_sample_dataset.model \
+  --workers 8
+```
+
+---
+license: odc-by
+---

vp_sample_dataset_v128k.tar.gz

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vp_sample_dataset_v256k.tar.gz

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vp_sample_dataset_v32k.tar.gz

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+size 64169965

vp_sample_dataset_v64k.tar.gz

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