Figure 3.

The flowcharts of some selected typical methods reviewed in this manuscript. (A) DAISY [13], a statistical-based method. (B) MNMC [72], an ensemble classifier. (C) SL2MF [29], a logistic matrix factorization method. (D) DDGCN [31], a GCN-based method. (E) KG4SL [80], a KG-based method.