International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2557

Full Length Research Paper

The modeling and optimization method of bi-level CARP-based express logistics system

He Zhiyong1, Wan Pu2 and Xu Hao3,4*
1College of Automobile and Mechanism Engineering, Changsha University of Science and Technology, Changsha 410004, China. 2Zhaotong Teacher’s College, Zhaotong 657000, China. 3College of Computer Science and Technology, Jilin University, Changchun 130012, P. R. China. 4Center for Computer Fundamental Education, Jilin University, Changchun 130012, P. R. China.
Email: [email protected]

  •  Accepted: 18 May 2011
  •  Published: 18 June 2011


Express logistics problem is a typical optimization problem. Considering the macro-allocation optimization problem and the micro routing scheduling problem, a bi-level CARP-based optimization modeling which the objective is to determine a set of feasible vehicle trips of minimum total cost has been constructed to describe the express logistics problem. Furthermore, an optimization method has been proposed based on the ant colony algorithm (ACA). Case studies shows effectiveness of methods.


Key words: Express logistics, bi-level carp, optimization, ant colony algorithm.