Figure 2. .

Determining the threshold of correlation for network composition. Probability distribution function (PDF) and complementary cumulative distribution function (CCDF) of degree distribution from three representative subjects from the ABIDE dataset. The threshold is set as (A) 0.35, (B) 0.40, and (C) 0.45. (A) With a threshold value of 0.35, in which most of the nodes are preserved, the degree distribution forms a peaked curve, which violates the scale-freeness of the network. (B) With a threshold value of 0.40, most of the nodes are preserved, while the degree distribution forms a relatively straight-downward line. (C) With a higher threshold value of 0.45, 4.8% of nodes, an average of 13 nodes per network are excluded from the largest component, which we considered inappropriate for a whole-brain analysis. Therefore, the threshold value was determined to be 0.40.