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.0,(r+l,,)] (0 + A (3)
383
-l.y)] ( f ) J
(1)
7=1,2, •
where t [(rtl)t(r + ljn (t) is the intensity of the remained pheromone on the route [(r, /), (r-f l,y)] at moment
r. At initial moment, the intensity of the pheromone on each route is equal, that is r [ (r , /), (r+i,;)] (0)=C (C
is a constant). 7] [(/v)((rl . lt;)] (0 is the visibility of the pheromone on the route [(r, z), (r+lj)] at moment t.
Here, we have
(2)
•l-s)
where M r+ i is the number of nodes on the separating line (r+1). a and / respectively represent the
index of the relative importance level of the intensity and the visibility of pheromone on the route of
the ant choosing (a>0, /3>0).
With time going on, the intensity of the remained pheromone on the routes ants have passed will
gradually abate. Parameter p (0