Add FineWeb-style all-wikis mix shards

README.md

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+# all-wikis-mix
+
+FineWeb-style Parquet shards created by merging all the already-built monolingual Wikipedia datasets into a **single dataset**.
+
+## Why this exists
+
+Training pipelines that round-robin by shard can “loop” on tiny datasets (repeating the same few shards). A single merged dataset has a healthier shard count and makes mixing more stable.
+
+## What’s inside
+
+- **Format**: `nanochat-parquet-v1`
+- **Layout**: `shard_*.parquet` + `metadata.json`
+- **Text column**: `text`
+- **Parquet settings**: zstd (level 3), `row_group_size=1024`, `use_dictionary=False`, `write_statistics=False`
+
+## Loading
+
+```python
+from datasets import load_dataset
+
+ds = load_dataset("JayJayThrowThrow/all-wikis-mix", split="train")
+print(ds.column_names)  # ["text"]
+```
+
+

metadata.json

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+{
+  "source": "wikipedia",
+  "dataset_id": "all-wikis-mix",
+  "license": null,
+  "inputs": [
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/afrikaans-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/arabic-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/bengali-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/chinese-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/dutch-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/french-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/german-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/gujarati-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/hindi-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/irish-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/kannada-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/malay-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/malayalam-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/marathi-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/nepali-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/polish-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/punjabi-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/scots-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/scottish-gaelic-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/sinhala-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/spanish-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/swahili-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/tamil-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/telugu-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/turkish-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/ukrainian-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/urdu-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/welsh-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/yoruba-wiki",
+    "/Users/cardigan/.cache/nanochat/datasets/monolingual/zulu-wiki"
+  ],
+  "cleaning": {
+    "wikipedia_postprocess": false
+  },
+  "created_at_utc": "2025-12-22T01:07:01Z",
+  "num_shards": 7,
+  "num_documents": 220671,
+  "format": "nanochat-parquet-v1",
+  "text_column": "text",
+  "row_group_size": 1024,
+  "parquet": {
+    "compression": "zstd",
+    "compression_level": 3,
+    "use_dictionary": false,
+    "write_statistics": false
+  },
+  "target_shard_bytes": 104857600,
+  "initial_chars_per_shard": 250000000,
+  "final_chars_per_shard_estimate": 247601096,
+  "single_shard": false
+}

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+size 89705912

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+size 111812280

shard_00006.parquet

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