Add dataset card

README.md

@@ -1,3 +1,38 @@
 ---
-license: apache-2.0
+license: other
+task_categories:
+- text-generation
+language:
+- en
+size_categories:
+- 1B<n<10B
 ---
+
+# Stew-10B
+
+10,000,000,000 GPT-2 tokens (`gpt2` fast tokenizer), pre-tokenized into raw
+`np.uint16` little-endian binary shards of 500,000,000 tokens
+(~1 GB) each. Every document is followed by `<|endoftext|>` (id 50256).
+
+| Source | Config | Share | Tokens |
+|---|---|---|---|
+| wikimedia/wikipedia | 20231101.en | 25% | 2,500,000,000 |
+| openbmb/Ultra-FineWeb | - | 50% | 5,000,000,000 |
+| mlfoundations/dclm-baseline-1.0 | - | 25% | 2,500,000,000 |
+
+## Usage
+
+```python
+import numpy as np
+from huggingface_hub import hf_hub_download
+
+path = hf_hub_download(
+    "wonder-ai/Stew-10B",
+    "data/train-00000-of-00020.bin",
+    repo_type="dataset",
+)
+tokens = np.memmap(path, dtype=np.uint16, mode="r")
+print(tokens.shape, tokens[:16])
+```
+
+Each source retains the licensing of its upstream dataset.