Update README.md

README.md

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 ---
 license: cc0-1.0
+task_categories:
+- text-generation
+language:
+- en
+pretty_name: Common crawl filtered corpus
+size_categories:
+- 100K<n<1M
 ---
+# English Cleaned Common Crawl Markdown Dataset
+
+An English-focused dataset created from **Common Crawl**, cleaned and converted to **Markdown**.
+The goal is to preserve web-document structure so that AI models can learn both **natural language and Markdown formatting**.
+
+## Features
+
+-  English-focused
+-  Cleaned and filtered web content
+-  HTML converted to Markdown
+-  Exact and near-duplicate filtering
+-  GPT-2 perplexity filtering
+-  Stored as compressed Parquet shards
+
+## Source
+
+The current dataset is being created from:
+
+**Common Crawl — `CC-MAIN-2026-25`**
+
+## Processing
+
+The pipeline roughly follows:
+
+```text
+Common Crawl
+     ↓
+HTML → Markdown
+     ↓
+Text cleaning
+     ↓
+English filtering
+     ↓
+Deduplication
+     ↓
+Quality filtering
+     ↓
+Parquet shards
+```
+## Dataset Format
+
+Each document contains:
+
+* text — cleaned Markdown
+* url — original URL
+* warc_date — Common Crawl date
+* record_id — WARC record ID
+* payload_digest — Common Crawl digest
+* edu_score — FineWeb-Edu score
+* perplexity — GPT-2 perplexity
+
+Example:
+
+```json
+{
+  "text": "A strong first passage makes the page easier to scan and improves the sense that the story belongs to a broader publication. Page 541 keeps this section distinct through ordering, context and a stable archival route. The opening section frames the topic with a calmer editorial rhythm and gives the page a clear entry po...",
+  "url": "http://aece.website/context-and-a-stable-archival-route-541/",
+  "warc_date": "2026-06-05T23:15:05Z",
+  "record_id": "urn:uuid:10c5fb6b-6359-4bc0-b503-217bb07ce3cb",
+  "payload_digest": "sha1:6JK43QOH3CQ64XB3MUWUICDVWDXJUEAO",
+  "edu_score": 1.767578125,
+  "perplexity": 0.0
+}
+```
+
+## File format
+
+Each common crawl timeline (Eg: 2025-26) is stored as a seperate folder like `CC-MAIN-2025-26`
+
+
+## Status
+
+Processing in progress.
+The dataset is uploaded shard by shard while it is being processed.
+Because processing is still ongoing, the Hugging Face Data Viewer may not be available yet. However, individual Parquet shards can already be downloaded from the repository.
+
+## Intended Use
+
+This dataset is mainly intended for research and experimentation involving:
+
+Markdown-aware language models
+LLM pretraining
+Markdown generation
+Structured document generation
+Web-text research
+
+<blockquote>
+This dataset is derived from publicly crawled web content. Individual documents may have different copyright or licensing conditions. 
+Please check the applicable rights before using the data.
+The filtering pipeline is automated, so some unwanted or low-quality content may remain.
+</blockquote>
+
+## Feedback
+
+Feedback on the cleaning, Markdown quality, filtering, and dataset format is welcome!