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+# Nature Communications Articles Dataset - natcomm_2512_001
+
+## Dataset Description
+
+This dataset contains scraped Nature Communications articles with comprehensive extraction of:
+- Main figures with captions and citations
+- Tables with full HTML and data
+- Supplementary figures with citation contexts
+- Supplementary tables with citation contexts
+- Supplementary files (PDFs, Excel files)
+- Article sections with hierarchical structure (h2=section, h3=subsection)
+- Figure/table citation contexts linking to sections
+
+## Dataset Structure
+
+### Files
+
+- `images_tables_natcomm_2512_001.zip`: Contains all article images and tables
+  - `files/[article_id]/images/`: Main figure images
+  - `files/[article_id]/tables/`: Table HTML files
+
+- `metadata_natcomm_2512_001.zip`: Contains JSON metadata for each article
+  - `metadata/[article_id].json`: Complete metadata including:
+    - `article_id`: Article identifier
+    - `url`: Original article URL
+    - `title`: Article title
+    - `image_set`: Dict of main figures with captions and citations
+    - `table_set`: Dict of tables with captions and data
+    - `supplementary_image_set`: Dict of supplementary figures with citations
+    - `supplementary_table_set`: Dict of supplementary tables with citations
+    - `supplementary_files`: List of supplementary file links
+    - `section_set`: Dict of article sections with hierarchical structure
+
+## Statistics
+
+- **Total Articles**: 277
+- **Scraping Date**: 2025-12-11
+
+### Content Summary
+
+- **Main Figures**: 1182 (4.3 per article)
+- **Tables**: 105 (0.4 per article)
+- **Supplementary Figures**: 1605 (5.8 per article)
+- **Supplementary Tables**: 322 (1.2 per article)
+- **Supplementary Files**: 2211 (8.0 per article)
+- **Sections**: 4876 (17.6 per article)
+
+## Features
+
+### Section Hierarchy
+Each section includes:
+- `level`: 2 (h2 main section) or 3 (h3 subsection)
+- `type`: "section" or "subsection"
+- `title`: Section heading
+- `content`: Full section text
+
+### Excluded Metadata Sections
+Administrative sections are filtered out:
+- Acknowledgements, Author information, Contributions
+- Peer review, Ethics declarations, Rights and permissions
+- Similar content recommendations
+
+### Citation Tracking
+Each figure/table has `contexts` array with:
+- `section`: Section title where cited
+- `text`: ±100 character context around citation
+- `full_content`: Complete section content
+
+## Usage
+
+```python
+import json
+import zipfile
+
+# Load article metadata
+with open('metadata_natcomm_2512_001/metadata/s41467-025-65722-y.json', 'r') as f:
+    article = json.load(f)
+
+# Access sections with hierarchy
+for sec_id, sec_info in article['section_set'].items():
+    if sec_info['level'] == 2:
+        print(f"Section: {sec_info['title']}")
+    else:
+        print(f"  Subsection: {sec_info['title']}")
+
+# Access figures with citations
+for fig_id, fig_info in article['image_set'].items():
+    print(f"{fig_id}: {fig_info['caption']}")
+    print(f"  Cited in: {[c['section'] for c in fig_info['contexts']]}")
+```
+
+## Version Notes
+
+**natcomm_2512_001** (December 2025):
+- Fixed section extraction to exclude recommendation sections
+- Added section hierarchy tracking (h2/h3 levels)
+- Improved metadata section filtering
+- Enhanced supplementary material citation tracking
+
+## License
+
+This dataset is derived from Nature Communications articles. Please respect original article licenses and cite appropriately.
+
+## Created By
+
+Batch Name: natcomm_2512_001
+Scraping Tool: Nature Communications Comprehensive Scraper
+Date: 2025-12-11
+Repository: https://huggingface.co/datasets/ZexiK/natcomSS