Affiliations: [a] College of Software, Xinjiang University, Urumqi, Xinjiang Uygur Autonomous Region, China
| [b] Network Resource Management and Trust Evaluation Key Laboratory of Hunan, School of Computer Engineering, Central South University, Changsha, China
| [c] National Engineering Laboratory for Medical Big Data Application, Central South University, Changsha, China
| [d] Big Data Institute, Central South University, Changsha, China
Correspondence:
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Corresponding authors: Yurong Qiana and Jun Long, E-mails: qyr@xju.edu.cn (Y. Qian), jlong@csu.edu.cn. (J. Long)
Abstract: The TransR model solves the problem that TransE and TransH models are not sufficient for modeling in public spaces, and is considered a highly potential knowledge representation model. However, TransR still adopts the translation principles based on the TransE model, and the constraints are too strict, which makes the model’s ability to distinguish between very similar entities low. Therefore, we propose a representation learning model TransR* based on flexible translation and relational matrix projection. Firstly, we separate entities and relationships in different vector spaces; secondly, we combine our flexible translation strategy to make translation strategies more flexible. During model training, the quality of generating negative triples is improved by replacing semantically similar entities, and the prior probability of the relationship is used to distinguish the relationship of similar coding. Finally, we conducted link prediction experiments on the public data sets FB15K and WN18, and conducted triple classification experiments on the WN11, FB13, and FB15K data sets to analyze and verify the effectiveness of the proposed model. The evaluation results show that our method has a better improvement effect than TransR on Mean Rank, Hits@10 and ACC indicators.
