Reinforcement Knowledge Graph Reasoning for Explainable Recommendation

Understand

Recent advances in personalized recommendation have sparked great interest in the exploitation of rich structured information provided by knowledge graphs.

• Unlike most existing approaches that only focus on leveraging knowledge graphs for more accurate recommendation, we perform explicit reasoning with knowledge for decision making so that the recommendations are generated and supported by an interpretable causal inference procedure.
• To this end, we propose a method called Policy-Guided Path Reasoning (PGPR), which couples recommendation and interpretability by providing actual paths in a knowledge graph.
• Our contributions include four aspects.