Global efficiency (IMAGE)
Caption
It can be seen that the global efficiency curves of the three layers are slightly different. More specifically, the RK layer shows the most obvious downward trend, while the RV layer has the slowest downward trend, and the RS layer falls between RK layer and RV layer. This phenomenon indicates that the interconnectedness between the variables based on the three indicators have different characteristics. Thus, it is necessary to construct a multilayer connectedness network by combining the RV, RS and RK to explore the interconnectedness between the financial sectors and the new energy companies of China. As shown by the dashed line in Figure 1, the key point of the global efficiency curves is around 0.1. In other words, when the threshold exceeds 0.1, the global efficiency of all layers will collapse. In view of this, 0.1 is the effective threshold selected in this paper.
Credit
Zhifeng Dai and Haoyang Zhu (Changsha University of Science and Technology, China).
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