Joint Global-Local Representations via Relation-Entity Pair Encoding for Hyper-Relational Knowledge Graphs
Hyper-relational knowledge graphs (HKGs) extend knowledge graphs with qualifiers to represent complex n-ary facts. However, existing methods often (1) rely on relation-agnostic node aggregation that mixes heterogeneous multi-hop evidence, which can lead to entity-role ambiguity and representation collapse, and (2) fail...