| 变量 | 模型1 | 模型2 | 模型3 | 模型4 |
|---|---|---|---|---|
| 互惠效应 | ||||
| Mutual | 1.0378*** | 0.5436*** | 0.6666*** | |
| (0.1236) | (0.1595) | (0.1918) | ||
| 结构依赖效应 | ||||
| Popularity | -2.4223*** | -2.0815*** | ||
| (0.1235) | (0.1414) | |||
| Activity | -1.4411*** | -1.2655*** | ||
| (0.1178) | (0.1377) | |||
| Transitivity | -0.1936*** | -0.0965*** | ||
| (0.0087) | (0.0096) | |||
| Cyclicity | 1.4819*** | 0.8631*** | ||
| (0.0540) | (0.0636) | |||
| 时间依赖效应 | ||||
| Stability | 1.8755*** | |||
| (0.0383) | ||||
| Variability | -3.7523*** | |||
| (0.0772) | ||||
| 趋同效应 | ||||
| Economy | 0.6869*** | 0.6458*** | 0.4461*** | 0.0381 |
| (0.0519) | (0.0527) | (0.0410) | (0.0690) | |
| Governance | -0.3974*** | -0.3748*** | -0.2904*** | -0.2057*** |
| (0.0562) | (0.0560) | (0.0576) | (0.0782) | |
| Infrastructure | -0.1088** | -0.1123** | -0.0975** | -0.1567** |
| (0.0534) | (0.0512) | (0.0493) | (0.0729) | |
| 发出效应 | ||||
| Production-H | 0.0003*** | 0.0003*** | 0.0001*** | 0.0001*** |
| (0.0000) | (0.0000) | (0.0000) | (0.0000) | |
| 接收效应 | ||||
| Consumption-H | 0.0004*** | 0.0004*** | 0.0002*** | 0.0002*** |
| (0.0000) | (0.0000) | (0.0000) | (0.0000) | |
| 外部网络效应 | ||||
| Distance | -0.0002*** | -0.0002*** | -0.0001*** | -0.0001*** |
| (0.0000) | (0.0000) | (0.0000) | (0.0000) | |
| Price | 0.0804*** | 0.0756*** | 0.0235*** | 0.0154* |
| (0.0074) | (0.0072) | (0.0041) | (0.0093) | |
| Voting | 0.6558*** | 0.6437*** | 0.7134*** | 0.7830*** |
| (0.1520) | (0.1493) | (0.1297) | (0.2165) | |
| Edges | -4.1514*** | -4.2041*** | -3.5649*** | -2.1694*** |
| (0.1428) | (0.1402) | (0.1302) | (0.2065) | |
| Num.obs. | 107310 | 107310 | 107310 | 85848 |
