A Survey of Graph Neural Networks for Recommender Systems: Challenges, Methods, and Directions

A Survey of Graph Neural Networks for Recommender Systems: Challenges, Methods, and Directions Recommender system is one of the most important information services on today’s Internet. Recently, graph neural networks have become the new state-of-the-art approach to recommender systems. In this survey, we conduct a comprehensive review of the literature on graph neural network-based recommender systems. We first introduce the background and the history of the development of both recommender syst...