Current methods to extract relational triples directly make a prediction based on a possible entity pair in a raw sentence without depending on entity recognition. The task suffers from a serious semantic overlapping problem, in which several relation triples may share one or two entities in a sentence. It is weak to learn discriminative semantic features relevant to a relation triple. In this paper, based on a two-dimensional sentence representation, a bi-consolidating model is proposed to address this problem by simultaneously reinforcing the local and global semantic features relevant to a relation triple. This model consists of a local consolidation component and a global consolidation component. The first component uses a pixel difference convolution to enhance semantic information of a possible triple representation from adjacent regions and mitigate noise in neighbouring neighbours. The second component strengthens the triple representation based a channel attention and a spatial attention, which has the advantage to learn remote semantic dependencies in a sentence. They are helpful to improve the performance of both entity identification and relation type classification in relation triple extraction. After evaluated on several publish datasets, it achieves competitive performance. Analytical experiments demonstrate the effectiveness of our model for relational triple extraction and give motivation for other natural language processing tasks.

通过使用基于两维句子表示的双重整合模型，本文提出了一种解决关系三元组提取中的语义重叠问题的方法，同时增强与关系三元组相关的局部和全局语义特征，有效提高实体识别和关系类型分类的性能，并在多个发布数据集上取得了有竞争力的性能，分析实验证明了我们模型在关系三元组提取中的有效性并对其他自然语言处理任务提供了动力。

一个用于联合关系三元组抽取的双合并模型