1.5.1
SCM(structual causal models)
变量分外生、内生(V集合);外生(U集合)没有母节点。
疑问:如何确定变量间关系(区分外生、内生)?1.经验?2.?能否自动化?
V ={Height, Sex, Performance}, U ={U1,U2, U3},
F ={ f1, f2} Sex = U1 Height = f1(Sex, U2) Performance = f2(Height, Sex, U3)
error terms(omitted factors):U1\U2\U3
1.5.2Product Decomposition