Table 1 Definition of predictor variables in the SAOM models
Effects | Explanation |
|---|---|
Rate function | On average how many opportunities each actor gets to make a change during each time period |
Out-degree | Network density |
Reciprocity | Actors’ tendency to make reciprocated ties |
in-degree popularity | The tendency of actors with high in-degree to attract extra incoming ties because of their high in-degree (popular people become even more popular) |
Out-degree activity | The tendency of actors with high out-degree to send extra outgoing ties because of their high out-degree (active people become even more active) |
Region alter | The likelihood of actors in the region X to attract incoming ties compared with actors in the reference region |
Region same | Whether the 2 actors in the same region tend to create new ties between each other |
Chain same | Whether the 2 actors in the same chain tend to create new ties between each other |