Dynamic Evolution of Service Trade Network Structure and Influence Mechanism in Countries along the “Belt and Road” with Big Data Analysis

Table 1

Meaning of parameters.

Parameter number	Parameter symbol	Parameter meaning	Expected symbol
1	GDP0	Economic scale difference matrix	+
2	GDP1	Income-level difference matrix	−
3	CON	Geographic location matrix	+
4	LAN	Language matrix	+
5	WTO	WTO matrix	−