Zhang, Zhao, Fuzhen Zhuang, Hengshu Zhu, Zhiping Shi, Hui Xiong, and Qing He. 2020. “Relational Graph Neural Network With Hierarchical Attention for Knowledge Graph Completion”. Proceedings of the AAAI Conference on Artificial Intelligence 34 (05):9612-19. https://doi.org/10.1609/aaai.v34i05.6508.