Add some translations and odiparpack directory

Inside odiparpack is input data related of our instance of the
MDHVRPTW  (Multi-Depot Heteregenous VRPTW)

1 files changed, 8 insertions, 7 deletions

diff --git a/vrptw_base.py b/vrptw_base.py
index e7e55bd..b92db7b 100644
--- a/vrptw_base.py
+++ b/vrptw_base.py
@@ -107,16 +107,16 @@ class VrptwGraph:
                                                   self.rho * self.init_pheromone_val
 
     def global_update_pheromone(self, best_path, best_path_distance):
-        """
-        更新信息素矩阵
-        :return:
+        """Update pheromone trail on best path  (T+)
+
+        Ant Colony System offline pheromone trail update
         """
         self.pheromone_mat = (1-self.rho) * self.pheromone_mat
 
-        current_ind = best_path[0]
-        for next_ind in best_path[1:]:
-            self.pheromone_mat[current_ind][next_ind] += self.rho/best_path_distance
-            current_ind = next_ind
+        current_index = best_path[0]
+        for next_index in best_path[1:]:
+            self.pheromone_mat[current_index][next_index] += self.rho/best_path_distance
+            current_index = next_index
 
     def nearest_neighbor_heuristic(self, max_vehicle_num=None):
         """Generate route plan using Nearest Neighbor (NN) heuristic
@@ -212,6 +212,7 @@ class VrptwGraph:
 
 
 class PathMessage:
+    """Deep copy of travel_path?"""
     def __init__(self, path, distance):
         if path is not None:
             self.path = copy.deepcopy(path)