We run IBFOA 100 iterations on the collected dataset to acquire the optimal offsets of the edge weight in NG, and then calculate the weights of nodes. Specifically, in Fig 3, for any evaluation factor node Ii, its weight is the sum of the absolute value of weight dij and its offset βij, that is, ∑j|βij+dij|, similarly, for any classification node Zij, its weight is ∑k|αijk+εijk|. Then nodes are sorted in descending order of their weights, and top 10 nodes of each type are displayed in Table 6.