Topic map connection statistics

Wandora can analyze connectivity of nodes in the topic map. Connectivity analyze is started selecting Layer > Statistics > Layer connection statistics. Following image illustrates a typical output of the tool.

This histogram shows the number of topics having some specific number of associations. Association refers here not only associations but also class-instance relations between topics. The leftmost bar represents topics with no associations, the one after that topics with one association and so on. The green highlighted bar represents the average number of associations each topic has and the red highlight can be moved using the mouse to see the exact values of each bar. In this case the red bar represents topics with 13 associations and the top part of the window tells us that there are 28 of such topics.

Connection count

If user has selected to include classes and instances to the count, the connection count is calculated for each topic t with formula:

number-of-associations-where-t-plays-a-role