DHGE: Dual-View Hyper-Relational Knowledge Graph Embedding for Link Prediction and Entity Typing
AAAI 2023(2023)
摘要
In the field of representation learning on knowledge graphs (KGs), a hyper-relational fact consists of a main triple and several auxiliary attribute-value descriptions, which is considered more comprehensive and specific than a triple-based fact. However, currently available hyper-relational KG embedding methods in a single view are limited in application because they weaken the hierarchical structure that represents the affiliation between entities. To overcome this limitation, we propose a dual-view hyper-relational KG structure (DH-KG) that contains a hyper-relational instance view for entities and a hyper-relational ontology view for concepts that are abstracted hierarchically from the entities. This paper defines link prediction and entity typing tasks on DH-KG for the first time and constructs two DH-KG datasets, JW44K-6K, extracted from Wikidata, and HTDM based on medical data. Furthermore, we propose DHGE, a DH-KG embedding model based on GRAN encoders, HGNNs, and joint learning. DHGE outperforms baseline models on DH-KG, according to experimental results. Finally, we provide an example of how this technology can be used to treat hypertension. Our model and new datasets are publicly available.
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关键词
KRR: Ontologies and Semantic Web,DMKM: Other Foundations of Data Mining & Knowledge Management,DMKM: Semantic Web,APP: Healthcare, Medicine & Wellness,KRR: Knowledge Acquisition,KRR: Knowledge Engineering,KRR: Knowledge Representation Languages,SNLP: Information Extraction,SNLP: Interpretability & Analysis of NLP Models,SNLP: Ontology Induction From Text,SNLP: Sentence-Level Semantics and Textual Inference
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