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iteration 0
best / optimum -
Presets
Warehouse & aisle closures
Click an aisle (in the 3D view or on the graph below) to close it, as if a forklift or a spill blocked it; click again to reopen. The pheromone on a closed aisle is lost at once.
Graph view (pheromone width = trail strength)
pheromoneDijkstra optimumcolony bestclosed aisle
Colony parameters
Live readouts
Convergence
Route cost relative to the exact optimum (1.00 = shortest). Mean of the colony, best of the generation, best so far. Vertical line = aisle closure.
Experiments
A. How many ants? For colony sizes 1...64 it runs 20 independent colonies on this warehouse and counts the generations (and total ant trips) until the mean of the last 24 ant trips is within 10 % of the Dijkstra optimum, with a no-pheromone control.
B. How fast should pheromone evaporate? Same measurement for rho from 0.02 to 0.7 at the current colony size.
C. Re-routing. Converges, closes the aisle whose loss hurts the optimum most, and counts the generations to recover.