Correction of the fitness formula

now the formula is:

f(g, v) = (nbP + a / A) * 100 * (nbp / nbV) * (avgP / avgV)

with f(g, v) the fitness of a given graph for a given vertex as origin.
nbP = number of Path found from v (origin).
a = bounding box area of the graph.
A = world area.
nbV = number of vertices in the graph.
avgP = average Path length (sum of all path found / nbV).
avgV = average Distance from origin to all graph's vertices.

I am still not happy with the fitness result... so the formula might changes