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Fabian Feitsch

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package heuristic func start(drops int, entry api.ClusterPortal, distances floatTriple) float64 { if entry == api.AccessPoint { return 0 } return float64(drops+1)*(distances.inner) + float64(drops+1)*distances.toNext + float64(drops)*distances.toNext } func end(picks int, exit api.ClusterPortal, distances floatTriple) float64 { if exit == api.ExitPoint { return float64(picks+1) * distances.toNext } return float64(picks+1)*distances.toPrevious + float64(picks)*distances.toPrevious + float64(picks+1)*distances.inner + float64(picks+1)*distances.toNext } func transportCosts(distances floatTriple, hopper int, bestLeftRightTour float64, case3 bool) float64 { if case3 { return float64(hopper) * (distances.inner + distances.toNext) } carry := float64(hopper) * (bestLeftRightTour + distances.toNext) extra := distances.toPrevious + (float64(hopper)+2)*distances.inner + (float64(hopper)+1)*distances.toNext return math.Min(carry, extra) } func drivingDistanceOfTour(instance partialClusterInstance, tour []int) float64 { distance := 0.0 lastRealLocation := tour[len(tour)-2] if instance.start == api.AccessPoint { distance = distance + instance.FromBorderPoints[tour[1]][0] } else { distance = distance + instance.FromBorderPoints[tour[1]][1] } if instance.target == api.AccessPoint { distance = distance + instance.ToBorderPoints[lastRealLocation][0] } else { distance = distance + instance.ToBorderPoints[lastRealLocation][1] } for i := 2; i < len(tour)-1; i++ { distance = distance + instance.Distances[tour[i-1]][tour[i]] } return distance }