56 lines
2.1 KiB
Python
56 lines
2.1 KiB
Python
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from src.io_tsp import ProblemInstance
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import os
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# OOT = out-of-time
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# Run #0 unknown
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# Run #1
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# alpha = 0.5, beta = 7, evap = 0.5, weight = instance.best_sol
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# if instance.nPoints > 1000: ants = 550 loops = 15
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# elif instance.nPoints > 195: ants = 1000 loops = 55
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# else: ants = 2500 loops = 150
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# pr439=112263 pcb442=53699 d198=16199 fl1577=<OOT> ch130=6332 u1060=247703
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# kroA100=21737 eil76=554 rat783=<OOT> lin318=45580
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# Run #2
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# alpha, beta, evap, weight = (0.9, 8, 0.4, 100_000)
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# ants, loops = (900, 6) if instance.nPoints > 1100 \
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# else (600, 15) if instance.nPoints > 1000 \
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# else (750, 30) if instance.nPoints > 700 \
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# else (975, 40) if instance.nPoints > 500 \
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# else (1000, 50) if instance.nPoints > 300 \
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# else (1100, 70) if instance.nPoints > 195 else (2700, 140)
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# pr439=111322 pcb442=52176 d198=16177 ch130=6269 u1060=246085
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# kroA100=21665 eil76=550 lin318=43675
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# Separate run: fl1577=24238 (132s) rat783=9389 (174s)
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dir = "/Users/maggicl/Git/AI2020BsC/c_prob/"
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def ant_colony_opt(instance):
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fname = dir + instance.name + ".txt"
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# write .mat file for C++
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if not os.path.exists(fname):
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with open(fname, "w") as f:
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for i in range(instance.nPoints):
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print(" ".join(map(str, instance.dist_matrix[i])), file=f)
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alpha, beta, evap, weight = (0.9, 8, 0.4, 100_000)
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ants, loops = (1000,7) if instance.nPoints > 1100 \
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else (600,15) if instance.nPoints > 1000 \
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else (750,30) if instance.nPoints > 700 \
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else (975,40) if instance.nPoints > 500 \
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else (1000,50) if instance.nPoints > 300 \
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else (1100,70) if instance.nPoints > 195 else (2700, 140)
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# Call C++ program
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cmd = dir + "aco " + str(instance.nPoints) + " " + str(loops) + " " + str(ants) + \
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" " + str(alpha) + " " + str(beta) + " " + str(evap) + " " + str(weight) +" < " + fname + " &2>/dev/null"
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print(cmd)
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solution = eval(os.popen(cmd).read())
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solution.append(solution[0])
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return solution
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if __name__ == "__main__":
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ant_colony_opt(ProblemInstance("../problems/eil76.tsp"))
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