论文标题
Iterefine:使用象征性知识的迭代kg改进嵌入
IterefinE: Iterative KG Refinement Embeddings using Symbolic Knowledge
论文作者
论文摘要
从文本源中提取的知识图(kg)通常很吵,并且在下游应用程序任务(例如基于KG的问题答案)中的性能差。尽管最近的许多活动都集中在通过推断新事实的嵌入来解决KGS的稀疏,但通过推断新事实的问题,但通过KG精炼的噪声清理而不是作为KG的清理问题,并不像对KG的噪声进行认真研究。最成功的KG精炼技术利用了推论规则和推理,而不是本体论的推理。除非有一些例外,否则嵌入不会使用本体论信息,并且他们在KG改进任务中的表现尚不清楚。在本文中,我们提出了一个称为Iterefine的KG改进框架,该框架迭代地结合了两种技术 - 一种使用本体论信息和推论规则,PSL -KGI和KG嵌入,例如复杂的和不可能。结果,Iterefine不仅能够利用本体论信息来提高预测的质量,还可以利用KG嵌入的力量(隐含地)执行更长的推理链。 Iterefine框架以共同训练模式运行,并从PSL-kgi中进行了明确的类型监督嵌入,我们称为Typee-X。我们在一系列KG基准的实验表明,我们生产的嵌入能够拒绝KG的嘈杂事实,同时推断出更高质量的新事实,从而提高了总体加权F1的9%
Knowledge Graphs (KGs) extracted from text sources are often noisy and lead to poor performance in downstream application tasks such as KG-based question answering.While much of the recent activity is focused on addressing the sparsity of KGs by using embeddings for inferring new facts, the issue of cleaning up of noise in KGs through KG refinement task is not as actively studied. Most successful techniques for KG refinement make use of inference rules and reasoning over ontologies. Barring a few exceptions, embeddings do not make use of ontological information, and their performance in KG refinement task is not well understood. In this paper, we present a KG refinement framework called IterefinE which iteratively combines the two techniques - one which uses ontological information and inferences rules, PSL-KGI, and the KG embeddings such as ComplEx and ConvE which do not. As a result, IterefinE is able to exploit not only the ontological information to improve the quality of predictions, but also the power of KG embeddings which (implicitly) perform longer chains of reasoning. The IterefinE framework, operates in a co-training mode and results in explicit type-supervised embedding of the refined KG from PSL-KGI which we call as TypeE-X. Our experiments over a range of KG benchmarks show that the embeddings that we produce are able to reject noisy facts from KG and at the same time infer higher quality new facts resulting in up to 9% improvement of overall weighted F1 score