历安毛子代枚大学 (1)GraphSAGE XIDIAN UNIVERSITY GraphSAGE:一个经典的基于空间的图神经网络 1节点嵌入表达矢量的产生 Algorithm 1:GraphSAGE embedding generation(i.e.,forward propagation)algorithm Input Graph gV,)input features};depth K;weight matrices Wk {1,..);non-linearity o;differentiable aggregator functions AGGREGATE,.∀k∈{1，，K;neighborhood functionN:v→2y Output:Vector representations z for all v EV 1hg←xu,∈V; 2 for k 1...K do 3 forv∈Vdo 4 h统O←AGGREGATE(({h-1,L∈N(}): 5 蓝←o(W.CONCAT(h-1,ho 6 end 7 h的←h/川hl2,u∈y 8 end 9u←h5,u∈V （1） GraphSAGE 4 GraphSAGE：一个经典的基于空间的图神经网络 1 节点嵌入表达矢量的产生