Back to general information about the SIENA program.

You view here a little program that demonstrates the evolution of a network according to this probability model. It was programmed by Paul Snijders. The program is more or less self-explanatory.
The model has five parameters (Density, Similarity, Reciprocity, Transitivity, Popularity). You can click on "Random", "Simulate", "Start", or "Explanation". When you have clicked on "Stop", you can change parameter values, click on the buttons "n--" or "n++", or click on nodes in the graph. After that, "Simulate" again! The expected density of this graph depends on all five parameters. To get an expected density that is not too high, it is advisable to let the sum of the five parameters be negative.