Fourth timepoint of van de Bunt's freshman dataset.
Codes: 1 = best friendship; 2 = friendship; 3 = friendly relationship; 4 = neutral relationship; 5 = troubled relationship; 0 = unknown person.
Adjacency matrix for the network at time point 4.
Van de Bunt, G.G., M.A.J. van Duijn, and T.A.B. Snijders (1999). Friendship networks through time: An actor-oriented statistical network model. Computational and Mathematical Organization Theory, 5, 167-192. Also see http://www.stats.ox.ac.uk/~snijders/siena/vdBunt_data.htm.