Social recommendation based on graph neural network are methods with better performance in existing models.It can alleviate the problem of data sparseness by mining graph structure information.However,most existing models only consider shallow semantic context informati...MORE Social recommendation based on graph neural network are methods with better performance in existing models.It can alleviate the problem of data sparseness by mining graph structure information.However,most existing models only consider shallow semantic context information,which makes GNN difficult to learn high-quality u...