Figure 2

Impact of some features on tie persistence. Conditional probability of persistence as a function of the different variables of the tie: (A) topological embeddedness, (B) relative freshness, (C) coefficient of variation and (D) time of the first call in our database. In (C) only ties with \(w_{ij}\in [20,50]\) are considered. The vertical line in (B) indicates the critical relative freshness \(\hat{f}_{ij} = 8.33\), where \(\Pi = 1/2\). Error bars are showed when they are bigger than symbol size.