model = read("VRPTW_r102_20_5.mps") model.setParam("Heuristics", 0) model.optimize() 求解日志如下:发现设定后, 除了找初始可行解以外 ,均无 H 标识,即未用到启发式算法。共使用了 49.27s 得到最优解。 Read MPS format model from file VRPTW_r102_20_5.mps Reading time = 0.03 seconds VRPTW...
Read MPS format model from file VRPTW_r102_20_5.mps Reading time = 0.02 seconds VRPTW: 1797 rows, 1525 columns, 14416 nonzeros Changed value of parameter MinRelNodes to 100 Prev: -1 Min: -1 Max: 2000000000 Default: -1 Changed value of parameter NoRelHeurTime to 20.0 Prev: 0.0 Min: ...
read("misc07.mps", env) model.optimize() model.dispose() env.dispose() feasRelaxS(relaxobjtype, minrelax, vrelax, crelax)# Modifies the Model object to create a feasibility relaxation. Note that you need to call optimize on the result to compute the actual relaxed solution. Note also...
输入 cmd, 启动 DOS 命令行方式。(2) 通过 CD 命令,进入到模型数据文件所在的目录。Gurobi 支持的模型数据格式包括 MPS,LP,REW 等。(3) 在提示符下,输入 gurobi,启动 gurobi 交互环境,如下 (4) 读入数据模型文件,输入 m=read(‘abc.mps’)(5) 这样数据就读入到 m 变量中 如果采用所有默认...
Please note that the MPS format has not been standardized, and each solver may have its own set of conventions and extensions. If you encounter read errors or notice a discrepancy in the solution found by Gurobi, please contact us athelp@gurobi.com, and we will be happy to help you figur...
输入 cmd, 启动 DOS 命令行方式。(2) 通过 CD 命令,进入到模型数据文件所在的目录。Gurobi 支持的模型数据格式包括 MPS,LP,REW 等。(3) 在提示符下,输入 gurobi,启动 gurobi 交互环境,如下 (4) 读入数据模型文件,输入 m=read(‘abc.mps’)(5) 这样数据就读入到 m 变量中 如果采用所有默认...
m =read('VRPTW_r102_20_5.mps')m.setParam("Cuts", 2) m.setParam(GRB.Param.LogFile,"gurobi.log")m.optimize() 运行结果如下: Gurobi 9.5.1 (linux64) logging started Tue Dec 6 17:08:55 2022 Set parameter LogFile to value"gurobi.log"Gurobi Optimizer version 9.5.1 build v9.5.1rc2 (...
MATLAB中的代码与运行结果:>> prob = mpsread("ExMilk.mps"); addpath('C:\gurobi912\win64\...
初识 gurobi 数学规划优化引擎
from gurobipy import * m = read('VRPTW_r102_20_5.mps') m.setParam("CoverCuts", 2) m.setParam(GRB.Param.LogFile, "gurobi.log") m.optimize() 运行结果如下: Gurobi 9.5.1 (linux64) logging started Tue Dec 6 17:39:51 2022 Set parameter LogFile to value "gurobi.log" Gurobi Optimize...