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README.md

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 <p align="right"> [
   <a href="#top">Back to top ⬆️ </a>  ] 
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+### License
+
+The code and weights of the Yi-1.5 series models are distributed under the [Apache 2.0 license](https://github.com/01-ai/Yi/blob/main/LICENSE).
+
+If you create derivative works based on this model, please include the following attribution in your derivative works:
+
+    This work is a derivative of [The Yi Series Model You Base On] by 01.AI, used under the Apache 2.0 License.
+
+<p align="right"> [
+  <a href="#top">Back to top ⬆️ </a>  ] 
+</p>
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