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Publish shard CC-MAIN-2026-08/00027

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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 **543,248 documents across 27 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 27 files of CC-MAIN-2026-08 (543,248 pages total), projected to the full crawl of 100,000 WARC files.
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- | Stage | 27 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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- | Raw WARC (.warc.gz, downloaded) | ~21.9 GB | ~83 TB | — |
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- | HTML extracted (uncompressed) | 68.6 GB | ~295 TB | — |
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- | Packed markdown WARC (.md.warc.gz) | ~1.0 GB | ~3.7 TB | **-98.5%** vs HTML |
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- | Final Parquet (Zstd level 19) | 738.8 MB | ~2.9 TB | **-30.7%** 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 68.6 GB of uncompressed HTML down to 2.2 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: ~21.9 GB of raw gzipped WARCs becomes **738.8 MB of Parquet** — a **96.7% total reduction** — containing 543,248 clean markdown documents.
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  ### Processing Times
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- Pipeline timings across 27 shards of CC-MAIN-2026-08:
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  ```
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- Pack (download + HTML→MD) ████████████████████████ total 1m 55s avg 4s
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- Export (Parquet) ██████░░░░░░░░░░░░░░░░░░ total 32s avg 1s
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- Publish (HuggingFace) ████████████████████████ total 2m 14s 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 **562,860 documents across 28 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 28 files of CC-MAIN-2026-08 (562,860 pages total), projected to the full crawl of 100,000 WARC files.
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+ | Stage | 28 files (measured) | 100,000 files (projected) | Reduction |
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  |---|---|---|---|
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+ | Raw WARC (.warc.gz, downloaded) | ~22.7 GB | ~83 TB | — |
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+ | HTML extracted (uncompressed) | 71.0 GB | ~295 TB | — |
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+ | Packed markdown WARC (.md.warc.gz) | ~1.1 GB | ~3.7 TB | **-98.5%** vs HTML |
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+ | Final Parquet (Zstd level 19) | 767.6 MB | ~2.9 TB | **-30.7%** 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 71.0 GB of uncompressed HTML down to 2.3 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: ~22.7 GB of raw gzipped WARCs becomes **767.6 MB of Parquet** — a **96.7% total reduction** — containing 562,860 clean markdown documents.
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  ### Processing Times
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+ Pipeline timings across 28 shards of CC-MAIN-2026-08:
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  ```
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+ Pack (download + HTML→MD) ████████████████████████ total 3m 6s avg 6s
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+ Export (Parquet) ██████░░░░░░░░░░░░░░░░░░ total 50s avg 1s
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+ Publish (HuggingFace) █████████████████░░░░░░░ total 2m 16s 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-2026-08/00027.parquet ADDED
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stats.csv CHANGED
@@ -25,4 +25,5 @@ CC-MAIN-2026-08,22,19334,2561111961,94198004,31132012,2026-03-13T05:47:38Z,0,0,9
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  CC-MAIN-2026-08,23,19449,2555120233,93378286,29225122,2026-03-13T05:47:49Z,0,0,8
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  CC-MAIN-2026-08,24,19587,2579501303,92876466,30976940,2026-03-13T05:47:58Z,0,0,6
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  CC-MAIN-2026-08,25,18824,2494782172,91229388,29429097,2026-03-13T05:49:04Z,42,15,4
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- CC-MAIN-2026-08,26,19453,2545699083,94363861,30370568,2026-03-13T05:50:36Z,73,17,0
 
 
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  CC-MAIN-2026-08,23,19449,2555120233,93378286,29225122,2026-03-13T05:47:49Z,0,0,8
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  CC-MAIN-2026-08,24,19587,2579501303,92876466,30976940,2026-03-13T05:47:58Z,0,0,6
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  CC-MAIN-2026-08,25,18824,2494782172,91229388,29429097,2026-03-13T05:49:04Z,42,15,4
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+ CC-MAIN-2026-08,26,19453,2545699083,94363861,30370568,2026-03-13T05:50:42Z,73,17,2
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+ CC-MAIN-2026-08,27,19612,2596439798,93518836,30208089,2026-03-13T05:52:12Z,71,18,0