Erratum: Small-World Networks: Evidence for a Crossover Picture [Phys. Rev. Lett. 82, 3180 (1999)]

We have performed new calculations using the breadth-first search algorithm [1,2]. We are now able to study systems with sizes up to n ­ 5500. As shown in Fig. 1, we now find t o 1, in agreement with the simple argument given in our Letter but different from the originally reported numerical result st ­ 0.67 6 0.10d. The reason for the incorrect numerical result reported initially is the small system sizes we studied, which did not allow us to reach the asymptotic regime. We thank A. Barrat [3] and M. E. J. Newman and D. J. Watts [4] for alerting us to the possibility of an error on our estimate of t. We also thank M. Argollo de Menezes for directing us to the breadth-first search algorithm.