Update README.md

README.md

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 ## Overview
 
-This is an Efficient implementation based on TensorFlow for knowledge representation learning (KRL). We use C++ to implement some underlying operations such as data preprocessing and negative sampling. For each specific model, it is implemented by TensorFlow with Python interfaces so that there is a convenient platform to run models on GPUs. OpenKE composes 3 repositories:
+This is an Efficient implementation based on TensorFlow for knowledge representation learning (KRL). We use C++ to implement some underlying operations such as data preprocessing and negative sampling. For each specific model, it is implemented by TensorFlow with Python interfaces so that there is a convenient platform to run models on GPUs. OpenKE composes 4 repositories:
 
 OpenKE: the main project based on TensorFlow, which provides the optimized and stable framework for knowledge graph embedding models.
 
+<a href="https://github.com/thunlp/OpenKE/tree/OpenKE-PyTorch"> OpenKE-PyTorch</a>: OpenKE implemented with PyTorch, also providing the optimized and stable framework for knowledge graph embedding models.
+
 <a href="https://github.com/thunlp/TensorFlow-TransX"> TensorFlow-TransX</a>: light and simple version of OpenKE based on TensorFlow, including TransE, TransH, TransR and TransD. 
 
 <a href="https://github.com/thunlp/Fast-TransX"> Fast-TransX</a>: efficient lightweight C++ inferences for TransE and its extended models utilizing the framework of OpenKE, including TransH, TransR, TransD, TranSparse and PTransE.