An Improved Ant Colony Optimization Based on an Adaptive Heuristic Factor for the Traveling Salesman Problem

Figure 5

Optimal path. (a) eil51. (b) kroA100. (c) kroB150. (d) kroA200. (e) gil262. (f) lin318. (g) fl417. (h) d493.

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(b)

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(e)

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