Update README.md

README.md

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 Filtered to remove files from repositories appearing in the CodeSearchNet test split, deduplicated on identical docstring or code.
 
+## 📘 Dataset Description
+
+This dataset contains Javascript functions and their documentation comments (`docstring`) extracted from public GitHub repositories. Each function is paired with metadata such as the repository name, file path, original license, and GitHub URL.
+
+Only code licensed under the following OSI-approved permissive licenses was included:
+
+- MIT
+- Apache License 2.0
+- BSD 2-Clause
+- BSD 3-Clause
+- ISC
+
+These licenses permit reuse and redistribution (including commercial use) provided that proper attribution and license terms are preserved.
+
+---
+## 📄 Licensing and Legal Notice
+
+All code snippets in this dataset were collected from public GitHub repositories that explicitly declare their licenses as one of the following: **MIT, Apache-2.0, BSD-2-Clause, BSD-3-Clause, or ISC**.
+
+To comply with license terms:
+
+- Each sample retains its license type in the `license` field.
+- Repository names and GitHub URLs are included to allow proper attribution.
+- License texts are available in the `LICENSES/` directory.
+- No code from repositories lacking a license or using GPL-style licenses was included.
+
+> ⚠️ **Disclaimer**: While care has been taken to ensure license compliance, users are responsible for verifying license terms and ensuring proper attribution when using this dataset in downstream applications.
+
 ## Splits
 - **train**: 105,655 examples
 - **validation**: 5,565 examples