We present a novel encoder-decoder architecture for graph-to-text generation based on Transformer, called the Graformer. With our novel graph self-attention, every node in the input graph is taken into account for the encoding of every other node - not only direct neighbors, facilitating the detection of global patterns. For this, the relation between any two nodes is characterized by the length of the shortest path between them, including the special case when there is no such path. The Graformer learns to weigh these node-node relations differently for different attention heads, thus virtually learning differently connected views of the input graph. We evaluate the Graformer on two graph-to-text generation benchmarks, the AGENDA dataset and the WebNLG challenge dataset, where it achieves strong performance while using significantly less parameters than other approaches.

本文介绍了Graformer，一种新颖的基于Transformer的编码器-解码器体系结构，用于图形到文本的生成。使用我们新颖的图形自我关注，节点的编码依赖于输入图中的所有节点，促进了全局模式的检测。通过学习不同关注头的节点之间的权重，Graformer实现了不同的连接视图，从而在AGENDA和WebNLG这两个流行的图形到文本生成基准测试中实现强大的性能。

通过相对位置对知识图谱进行文本生成的图结构建模