[PSO] Based on PSO particle swarm optimization, matlab simulation of the calculation of the lowest transportation cost of goods at material points, including transportation costs, agent conversion cos

1. Software version

matlab2013b

2. System principle

      Yes M Homework （ Transportation task ）,S Agents ,k Two modes of transportation ,n Nodes （ City ）. Each assignment has a time limit , The fourth party logistics is responsible for all operations 、 Agents 、 Integrate various transportation modes . Each job can be represented by any agent on any node , That is, agent conversion between agents can be carried out at each node ; Only one transportation mode can be selected for each operation between any nodes , The transportation capacity of agents between nodes is different , The agency price discount provided according to different traffic volume is different . The model is to solve the transportation route of each operation and choose which agent chooses which transportation mode on each node .

 

  The cost is divided into four parts ： Transportation expenses 、 Agent conversion fee 、 Transportation mode conversion cost and time penalty cost .