app/services/vns/engine.rb

@@ -28,7 +28,10 @@ module VNS
       @best_solution = @initial_solution
       @best_score = @target_function.call(@best_solution)
 
+      puts "Initial score: #{@best_score.to_f}"
+
       self.class.sequence(@perturbations).each do |perturbation|
+        puts "Running perturbation: #{perturbation.name}"
         optimize(perturbation.new(@best_solution))
       end
 
@@ -45,6 +48,8 @@ module VNS
         @best_solution = alternative_solution.deep_dup
         @best_score = score
 
+        puts "New lowest score: #{@best_score.to_f}"
+
         return optimize(perturbation.class.new(@best_solution))
       end
     end