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Publish shard CC-MAIN-2026-08/00021

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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 **427,107 documents across 21 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 21 files of CC-MAIN-2026-08 (427,107 pages total), projected to the full crawl of 100,000 WARC files.
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- | Stage | 21 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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- | Raw WARC (.warc.gz, downloaded) | ~17.0 GB | ~83 TB | — |
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- | HTML extracted (uncompressed) | 54.3 GB | ~295 TB | — |
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- | Packed markdown WARC (.md.warc.gz) | ~814.2 MB | ~3.7 TB | **-98.5%** vs HTML |
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- | Final Parquet (Zstd level 19) | 565.5 MB | ~2.9 TB | **-30.5%** 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 54.3 GB of uncompressed HTML down to 1.7 GB of markdown — a **98.5% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 67.4%.
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- End to end: ~17.0 GB of raw gzipped WARCs becomes **565.5 MB of Parquet** — a **96.8% total reduction** — containing 427,107 clean markdown documents.
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  ### Processing Times
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- Pipeline timings across 21 shards of CC-MAIN-2026-08:
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  ```
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  Pack (download + HTML→MD) ░░░░░░░░░░░░░░░░░░░░░░░░ total — avg —
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  Export (Parquet) ░░░░░░░░░░░░░░░░░░░░░░░░ total — avg —
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- Publish (HuggingFace) ░░░░░░░░░░░░░░░░░░░░░░░░ total 1m 26s avg 4s
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  ```
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  ### Personal and Sensitive Information
 
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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 **446,601 documents across 22 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 22 files of CC-MAIN-2026-08 (446,601 pages total), projected to the full crawl of 100,000 WARC files.
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+ | Stage | 22 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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+ | Raw WARC (.warc.gz, downloaded) | ~17.8 GB | ~83 TB | — |
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+ | HTML extracted (uncompressed) | 56.7 GB | ~295 TB | — |
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+ | Packed markdown WARC (.md.warc.gz) | ~857.4 MB | ~3.7 TB | **-98.5%** vs HTML |
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+ | Final Parquet (Zstd level 19) | 594.6 MB | ~2.9 TB | **-30.6%** 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 56.7 GB of uncompressed HTML down to 1.8 GB of markdown — a **98.5% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 67.4%.
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+ End to end: ~17.8 GB of raw gzipped WARCs becomes **594.6 MB of Parquet** — a **96.7% total reduction** — containing 446,601 clean markdown documents.
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  ### Processing Times
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+ Pipeline timings across 22 shards of CC-MAIN-2026-08:
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  ```
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  Pack (download + HTML→MD) ░░░░░░░░░░░░░░░░░░░░░░░░ total — avg —
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  Export (Parquet) ░░░░░░░░░░░░░░░░░░░░░░░░ total — avg —
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+ Publish (HuggingFace) ░░░░░░░░░░░░░░░░░░░░░░░░ total 1m 33s avg 4s
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  ```
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  ### Personal and Sensitive Information
charts/compression_pie.png CHANGED
charts/rows_chart.png CHANGED
charts/size_chart.png CHANGED
charts/timing_chart.png CHANGED
data/CC-MAIN-2026-08/00021.parquet ADDED
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stats.csv CHANGED
@@ -19,4 +19,5 @@ CC-MAIN-2026-08,16,19637,2631647654,95718985,31017617,2026-03-13T05:46:30Z,0,0,6
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  CC-MAIN-2026-08,17,19286,2551077727,91540128,29028673,2026-03-13T05:46:40Z,0,0,7
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  CC-MAIN-2026-08,18,19552,2597892662,93434179,29872907,2026-03-13T05:46:51Z,0,0,7
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  CC-MAIN-2026-08,19,19176,2531689800,93034579,29963080,2026-03-13T05:46:59Z,0,0,5
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- CC-MAIN-2026-08,20,19617,2599556257,95774763,29947204,2026-03-13T05:46:59Z,0,0,0
 
 
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  CC-MAIN-2026-08,17,19286,2551077727,91540128,29028673,2026-03-13T05:46:40Z,0,0,7
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  CC-MAIN-2026-08,18,19552,2597892662,93434179,29872907,2026-03-13T05:46:51Z,0,0,7
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  CC-MAIN-2026-08,19,19176,2531689800,93034579,29963080,2026-03-13T05:46:59Z,0,0,5
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+ CC-MAIN-2026-08,20,19617,2599556257,95774763,29947204,2026-03-13T05:47:09Z,0,0,7
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+ CC-MAIN-2026-08,21,19494,2588913444,96339798,30507472,2026-03-13T05:47:09Z,0,0,0