RNTI

MODULAD
Prédiction de liens dans les graphes de connaissances avec les concepts de plus proches voisins
In EGC 2019, vol. RNTI-E-35, pp.69-80
Abstract
The open nature of Knowledge Graphs (KG) often implies that they are incomplete. Link prediction consists in infering new links between entities based on existing links. Most existing approaches rely on the learning of latent feature vectors for the encoding of entities and relations. In general however, latent features cannot be easily interpreted. Rule-based approaches offer interpretability but a distinct ruleset must be learned for each relation. We propose a new approach that does not need a training phase, and that can provide interpretable explanations for each inference. It relies on the computation of Concepts of Nearest Neighbours (CNN) to identify similar entities based on common graph patterns. Dempster-Shafer theory is then used to draw inferences from CNNs. We evaluate our approach on FB15k-237, a challenging benchmark for link prediction, where it gets improved performance compared to existing approaches.