在Gurobi中,使用`getvalue()`函数的一般语法如下: getvalue(variable) `getvalue()`函数只接受一个参数,即需要获取最优值的变量对象。这个变量对象可以是Gurobi模型中的变量,也可以是约束条件或目标函数中的变量。 三、`getvalue()`函数的使用示例 为了更好地解释`getvalue()`函数的使用方法,让我们来看一个简单...
print("y:", result.get_variable_value("y")) print("z:", result.get_variable_value("z")) ``` 运行上述代码后,Gurobi 将根据给定的限制条件求解问题,并输出最优解。 5.总结 Gurobi 是一种强大的数学优化软件,支持多种限制条件。通过与 Python 结合,用户可以方便地解决各种复杂的数学优化问题。©...
Variable Attributes 变量属性 例如: X 当前变量的取值; Start MIP初始解。 Linear Constraint Attributes 线性约束属性 例如: Pi 约束对应的对偶值;Slack 约束的松弛量;RHS 约束的右端项。 Special-ordered Set constraints Attributes SOS约束属性
以如下的混合整数规划为例: library(CVXR)x=vstack(Variable(2),Variable(1,integer=TRUE),Variable(1))C=matrix(c(1,2,-0.1,-3),nrow=1)objective=Maximize(C%*%x)constraints=list(x>=0,x[1]+x[2]<=5,2*x[1]-x[2]>=0,-x[1]+3*x[2]>=0,x[3]+x[4]>=0.5,x[3]>=1.1)problem=...
getMessage()); } } } 2.4 运行 报错:java.lang.UnsatisfiedLinkError:no gurobi950 in java.library.path 原因是环境变量未生效,重启解决 2.5 运行结果 Set parameter Username Set parameter LogFile to value "mip1.log" Academic license - for non-commercial use only - expires 2022-01-09 Gurobi ...
,xn,c} states that the resultant variable r should be equal to the maximum of the operand variables x1,…,xn and the constant c. You can also add a MAX constraint using the max_ function. Parameters: resvar –(Var) The variable whose value will be equal to the maximum of the other...
Variable AttributesThese are variable attributes, meaning that they are associated with specific variables in the model. You should use one of the various get routines to retrieve the value of an attribute. These are described at the beginning of this section. For the object-oriented interfaces, ...
http://www.edgestone‐/ Gurobi 快速入门手册 版本 4.5,Copyright © 2011,Gurobi Optimization,Inc. Gurobi 优化器由刃之砺信息科技(上海)有限公司在中国地区代理, 联系电话 021网址 www.edgestone‐/gurobi.htm Gurobi v4.5 快速入门手册。刃之砺信息科技(上海)有限公司代理和翻译。http://www.edgestone‐/ ...
// Each variable stands for whether we put the item into the knapsack Camera = {0, 1} Figurine = {0, 1} Cider = {0, 1} Horn = {0, 1} // Maximize dollar value Maximize 5 * camera + 7 * figurine + 2 * cider + 10 * horn ...
Variable types: 100 continuous, 950 integer (850 binary) Root relaxation: objective 8.000000e+01, 60 iterations, 0.00 seconds (0.00 work units) Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time ...