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Publish shard CC-MAIN-2026-08/01280

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  1. README.md +10 -10
  2. data/CC-MAIN-2026-08/01280.parquet +3 -0
  3. stats.csv +1 -0
README.md CHANGED
@@ -32,7 +32,7 @@ configs:
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  Open Index is a large-scale web text dataset built from [Common Crawl](https://commoncrawl.org). Every page goes through a pipeline that extracts the main content from raw HTML, converts it to clean Markdown using [trafilatura](https://github.com/adbar/trafilatura), and packages the result into Parquet files with full WARC metadata preserved.
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- The dataset currently includes crawl **CC-MAIN-2026-08** with **18,608,436 documents across 961 shards**. We plan to add more snapshots over time.
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  Open Index is released under the **Open Data Commons Attribution License (ODC-By) v1.0**, the same license used by Common Crawl.
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@@ -164,27 +164,27 @@ Empty conversions (pages where trafilatura could not extract meaningful content)
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  ### Compression Ratios
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- Numbers below are actual measurements summed across all 961 files of CC-MAIN-2026-08 (18,608,436 pages total), projected to the full crawl of 100,000 WARC files.
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- | Stage | 961 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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- | Raw WARC (.warc.gz, downloaded) | ~778.9 GB | ~83 TB | — |
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  | HTML extracted (uncompressed) | 2.2 TB | ~295 TB | — |
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- | Packed markdown WARC (.md.warc.gz) | ~39.4 GB | ~3.7 TB | **-98.3%** vs HTML |
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  | Final Parquet (Zstd level 19) | 26.7 GB | ~2.9 TB | **-32.4%** vs packed WARC |
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- The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 2.2 TB of uncompressed HTML down to 83.9 GB of markdown — a **98.3% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 68.2%.
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- End to end: ~778.9 GB of raw gzipped WARCs becomes **26.7 GB of Parquet** — a **96.6% total reduction** — containing 18,608,436 clean markdown documents.
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  ### Processing Times
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- Pipeline timings across 961 shards of CC-MAIN-2026-08:
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  ```
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- Download (raw WARC) ████████████████████████ total 64h 31m 21s avg 4m 1s
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  Convert (HTML → MD) ██░░░░░░░░░░░░░░░░░░░░░░ total 5h 23m 35s avg 20s
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- Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 15h 4m 24s avg 56s
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  Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 6h 53m 46s avg 25s
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  ```
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  Open Index is a large-scale web text dataset built from [Common Crawl](https://commoncrawl.org). Every page goes through a pipeline that extracts the main content from raw HTML, converts it to clean Markdown using [trafilatura](https://github.com/adbar/trafilatura), and packages the result into Parquet files with full WARC metadata preserved.
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+ The dataset currently includes crawl **CC-MAIN-2026-08** with **18,627,930 documents across 962 shards**. We plan to add more snapshots over time.
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  Open Index is released under the **Open Data Commons Attribution License (ODC-By) v1.0**, the same license used by Common Crawl.
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  ### Compression Ratios
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+ Numbers below are actual measurements summed across all 962 files of CC-MAIN-2026-08 (18,627,930 pages total), projected to the full crawl of 100,000 WARC files.
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+ | Stage | 962 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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+ | Raw WARC (.warc.gz, downloaded) | ~779.7 GB | ~83 TB | — |
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  | HTML extracted (uncompressed) | 2.2 TB | ~295 TB | — |
173
+ | Packed markdown WARC (.md.warc.gz) | ~39.5 GB | ~3.7 TB | **-98.3%** vs HTML |
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  | Final Parquet (Zstd level 19) | 26.7 GB | ~2.9 TB | **-32.4%** vs packed WARC |
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+ The big win is the HTML → Markdown step: trafilatura strips all tags, scripts, styles, navigation, and ads, keeping only the main content. This cuts 2.2 TB of uncompressed HTML down to 84.0 GB of markdown — a **98.3% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 68.2%.
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+ End to end: ~779.7 GB of raw gzipped WARCs becomes **26.7 GB of Parquet** — a **96.6% total reduction** — containing 18,627,930 clean markdown documents.
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  ### Processing Times
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+ Pipeline timings across 962 shards of CC-MAIN-2026-08:
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  ```
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+ Download (raw WARC) ████████████████████████ total 64h 38m 57s avg 4m 1s
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  Convert (HTML → MD) ██░░░░░░░░░░░░░░░░░░░░░░ total 5h 23m 35s avg 20s
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+ Export (Parquet) █████░░░░░░░░░░░░░░░░░░░ total 15h 9m 2s avg 56s
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  Publish (HuggingFace) ██░░░░░░░░░░░░░░░░░░░░░░ total 6h 53m 46s avg 25s
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  ```
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data/CC-MAIN-2026-08/01280.parquet ADDED
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+ version https://git-lfs.github.com/spec/v1
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+ oid sha256:e6f75f0d022d6de235910d143c27f773e9fcff6a53869eed9281d5d4522a72fe
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+ size 29606455
stats.csv CHANGED
@@ -694,6 +694,7 @@ CC-MAIN-2026-08,1276,19185,2550260674,91966065,29524037,2026-03-13T21:41:29Z,480
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  CC-MAIN-2026-08,1277,19513,2629606296,93340605,29191686,2026-03-13T21:56:11Z,784,0,106,12
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  CC-MAIN-2026-08,1278,19764,2626938399,90419690,28839516,2026-03-13T22:07:15Z,536,0,158,15
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  CC-MAIN-2026-08,1279,19706,2585020918,92720492,29244257,2026-03-13T22:20:41Z,613,0,188,14
 
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  CC-MAIN-2026-08,1301,19417,2601765043,93758124,29790521,2026-03-13T11:40:27Z,0,0,0,0
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  CC-MAIN-2026-08,1302,19471,2592470194,95488689,29747494,2026-03-13T11:40:27Z,0,0,0,0
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  CC-MAIN-2026-08,1303,19681,2609544680,95027524,30250671,2026-03-13T11:40:27Z,0,0,0,0
 
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  CC-MAIN-2026-08,1277,19513,2629606296,93340605,29191686,2026-03-13T21:56:11Z,784,0,106,12
695
  CC-MAIN-2026-08,1278,19764,2626938399,90419690,28839516,2026-03-13T22:07:15Z,536,0,158,15
696
  CC-MAIN-2026-08,1279,19706,2585020918,92720492,29244257,2026-03-13T22:20:41Z,613,0,188,14
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+ CC-MAIN-2026-08,1280,19494,2585853708,92016326,29606455,2026-03-13T22:32:56Z,456,0,278,0
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  CC-MAIN-2026-08,1301,19417,2601765043,93758124,29790521,2026-03-13T11:40:27Z,0,0,0,0
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  CC-MAIN-2026-08,1302,19471,2592470194,95488689,29747494,2026-03-13T11:40:27Z,0,0,0,0
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  CC-MAIN-2026-08,1303,19681,2609544680,95027524,30250671,2026-03-13T11:40:27Z,0,0,0,0