Update README.md

README.md

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-license: cc-by-4.0
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+---
+license: cc-by-nc-4.0
+pretty_name: Pharmaceutical Approvals & Regulatory Timeline
+tags:
+- regulatory-affairs
+- fda
+- ema
+- drug-approval
+- timeline-analysis
+task_categories:
+- tabular-classification
+size_categories:
+- n<1K
+---
+
+📜 Dataset Summary
+
+The Pharmaceutical Approvals & Regulatory Timeline Data captures 500 drug approval records drawn from the four major regulatory jurisdictions: China (NMPA), United States (FDA), European Union (EMA), and Japan (PMDA), with approximately 100 records per region. It enables comparative regulatory analysis and temporal modeling of the global pharmaceutical approval landscape.
+
+🚀 Key Features
+
+•
+Four-Jurisdiction Coverage: Balanced representation across China, US, EU, and Japan for cross-regional regulatory research.
+
+•
+Temporal Regulatory Tracking: Includes first_approval_date and detailed timestamp tracking (time_ts).
+
+•
+Entity Linkage: Maps approvals to specific drug_id, disease_id, and organizational entities (org_master_entity_id).
+