Reasoning Through Memorization: Nearest Neighbor Knowledge Graph Embeddings

Understand

Previous knowledge graph embedding approaches usually map entities to representations and utilize score functions to predict the target entities, yet they typically struggle to reason rare or emerging unseen entities.

• In this paper, we propose kNN-KGE, a new knowledge graph embedding approach with pre-trained language models, by linearly interpolating its entity distribution with k-nearest neighbors.
• We compute the nearest neighbors based on the distance in the entity embedding space from the knowledge store.
• Our approach can allow rare or emerging entities to be memorized explicitly rather than implicitly in model parameters.