| 变量 | 模型1 | 模型 2 | 模型3 | 模型4 | |
|---|---|---|---|---|---|
| 有向边数 | edges | -22.5704*** (0.4755) | -17.7724*** (0.5260) | -13.2246*** (0.5167) | -10.7549*** (0.6100) |
| 互惠性 | mutual | 1.5287*** (0.1373) | 1.4064*** (0.1363) | 0.8159*** (0.1822) | |
| delrecip | 1.5854*** (0.0955) | 1.3766*** (0.0939) | 0.6481*** (0.1607) | ||
| 结构依赖 | gwesp | 0.7901*** (0.1286) | 0.8620*** (0.1350) | ||
| gwdsp | -0.0991*** (0.0111) | -0.0605*** (0.0111) | |||
| gwideg | -2.2181*** (0.3000) | -1.9589*** (0.2893) | |||
| 时间依赖 | varialility | -0.1882*** (0.0399) | |||
| stability | 1.1960*** (0.0509) | ||||
| 发送者属性 | nodeocov(patent) | 0.6643*** (0.0162) | 0.5110*** (0.0180) | 0.4399*** (0.0208) | 0.3766*** (0.0244) |
| nodeocov(ipp) | 0.5985*** (0.0401) | 0.5372*** (0.0462) | 0.4159*** (0.0424) | 0.2506*** (0.0516) | |
| nodeocov(ict) | 0.0331*** (0.0041) | 0.0320*** (0.0051) | 0.0209*** (0.0045) | 0.0277*** (0.0063) | |
| nodeocov(rdp) | 0.0227*** (0.0026) | 0.0245*** (0.0029) | 0.0183*** (0.0031) | 0.0130*** (0.0035) | |
| 接收者属性 | nodeicov(patent) | 0.5822*** (0.0154) | 0.3802*** (0.0189) | 0.2214*** (0.0219) | 0.1971*** (0.0260) |
| nodeicov(ipp) | 0.3147*** (0.0367) | 0.1336*** (0.0466) | 0.0246 (0.0339) | -0.0160 (0.0433) | |
| nodeicov(ict) | 0.0202*** (0.0037) | 0.0083* (0.0045) | 0.0041 (0.0036) | 0.0156*** (0.0051) | |
| nodeicov(rdp) | 0.0010 (0.0035) | -0.0128*** (0.0041) | -0.0161*** (0.0036) | -0.0090** (0.0044) | |
| 边属性 | edgecov(language) | 0.5102*** (0.1166) | 0.3425*** (0.1301) | 0.2082* (0.1184) | 0.1684 (0.1719) |
| edgecov(dist) | 1.5951*** (0.1287) | 1.0562*** (0.1353) | 1.0331*** (0.1429) | 0.8437*** (0.1759) | |
| edgecov(colonize) | 0.7759*** (0.2254) | 0.5271** (0.2476) | 0.3679 (0.2388) | 0.3260 (0.2795) | |
| edgecov(Wassenaar) | -1.0449*** (0.0777) | -0.7182*** (0.0831) | -0.4476*** (0.0712) | -0.4856*** (0.0939) | |
| 观测值 | 33300 | 27750 | 27750 | 27750 | |
| AIC | 6304.9429 | 5044.2068 | 4534.8579 | 3894.9442 | |
| BIC | 6414.3159 | 5191.9746 | 4712.1792 | 4091.9678 | |
| Log Likelihood | -3139.4714 | -2507.1034 | -2249.429 | -1927.4721 | |
