Figure 1. Sexual partnership networks from the three individual-based models.

The ‘instantaneous contact’ model has no connectivity at cross-section but exhibits variation and connected components of different size within a period of one year. The ‘pair model’ and ‘triple model’ illustrate the connectivity at cross-section and larger connected components during a period of one year. Note that in all three models, the average number of new partnerships formed within one year is equal. For illustrative purposes, the population size was limited to 100, resulting in higher connected networks compared to larger population sizes. Different sexes are indicated by filled and empty circles.