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Publish shard CC-MAIN-2026-08/00019

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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 **388,314 documents across 19 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 19 files of CC-MAIN-2026-08 (388,314 pages total), projected to the full crawl of 100,000 WARC files.
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- | Stage | 19 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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- | Raw WARC (.warc.gz, downloaded) | ~15.4 GB | ~83 TB | — |
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- | HTML extracted (uncompressed) | 49.5 GB | ~295 TB | — |
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- | Packed markdown WARC (.md.warc.gz) | ~729.6 MB | ~3.7 TB | **-98.6%** vs HTML |
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- | Final Parquet (Zstd level 19) | 508.4 MB | ~2.9 TB | **-30.3%** 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 49.5 GB of uncompressed HTML down to 1.5 GB of markdown — a **98.6% reduction** — before any file-level compression is applied. Parquet with Zstd level 19 then compresses the markdown a further 67.2%.
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- End to end: ~15.4 GB of raw gzipped WARCs becomes **508.4 MB of Parquet** — a **96.8% total reduction** — containing 388,314 clean markdown documents.
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  ### Processing Times
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- Pipeline timings across 19 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 14s avg 3s
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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 **407,490 documents across 20 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 20 files of CC-MAIN-2026-08 (407,490 pages total), projected to the full crawl of 100,000 WARC files.
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+ | Stage | 20 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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+ | Raw WARC (.warc.gz, downloaded) | ~16.2 GB | ~83 TB | — |
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+ | HTML extracted (uncompressed) | 51.9 GB | ~295 TB | — |
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+ | Packed markdown WARC (.md.warc.gz) | ~771.3 MB | ~3.7 TB | **-98.5%** vs HTML |
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+ | Final Parquet (Zstd level 19) | 537.0 MB | ~2.9 TB | **-30.4%** 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 51.9 GB of uncompressed HTML down to 1.6 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 67.3%.
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+ End to end: ~16.2 GB of raw gzipped WARCs becomes **537.0 MB of Parquet** — a **96.8% total reduction** — containing 407,490 clean markdown documents.
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  ### Processing Times
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+ Pipeline timings across 20 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 21s 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-2026-08/00019.parquet ADDED
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+ size 29963080
stats.csv CHANGED
@@ -17,4 +17,5 @@ CC-MAIN-2026-08,14,19476,2599198052,93462608,30191956,2026-03-13T05:46:15Z,0,0,1
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  CC-MAIN-2026-08,15,19509,2602820538,92725066,29817208,2026-03-13T05:46:20Z,0,0,2
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  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-2026-08,18,19552,2597892662,93434179,29872907,2026-03-13T05:46:40Z,0,0,0
 
 
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  CC-MAIN-2026-08,15,19509,2602820538,92725066,29817208,2026-03-13T05:46:20Z,0,0,2
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  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-2026-08,19,19176,2531689800,93034579,29963080,2026-03-13T05:46:51Z,0,0,0