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Permutation Flow Shop Scheduling Problem by Heuristic and Metaheuristic Algorithm

  • optimization.cpp: main code
  • plot.py: main code for drawing the Gantt chart
  • paper.pdf: report for the project
  • flowshop-test-10-students.txt: given data for the problem
  • test.txt: best results for each of the case in flowshop-test-10-students.txt

Project introduction

  • Solved the problem by Hill Climbing, Simulated Annealing (SA), NEH heuristic algorithm and Ant Clony Optimization (ACO); calculated the time cost of scheduling by Dynamic Programming.
  • Modified the model to achieve better performance of SA.
  • Improved the result of ACO based on the information of NEH heuristic algorithm.

Methods

Dynamic Programming

DP

Hill Climbing

HC

Simulated Annealing

SA

Ant Colony Optimization

ACO

Results

Parameters

序号 内循环次数 初始温度 降温系数 温度下限 运行时间(s)
0 1000 10000 0.99 1E-07 1.523
1 1000 10000 0.99 1E-07 1.648
2 1000 10000 0.99 1E-07 1.433
3 1000 10000 0.99 1E-07 1.676
4 1000 10000 0.99 1E-07 1.488
5 1000 10000 0.99 1E-07 1.54
6 1000 150000 0.99 1E-07 6.017
7 3000 150000 0.998 1E-06 126.944
8 1000 10000 0.99 1E-07 2.546
9 3000 150000 0.997 1E-07 102.665
10 1000 10000 0.99 1E-07 14.058

Gantt chart of the solution

gantt

About

Solution to the PFSP problem (BIT北理工,最优化,置换流水车间调度)

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