Class LinearOptimizationService

LinearOptimizationService

线性优化服务,用于为线性和混合整数线性建模和求解 计划。以下示例求解了以下线性程序:

两个变量,xy
0 ≤ x ≤ 10
0 ≤ y ≤ 5

限制条件:
0 ≤ 2 * x + 5 * y ≤ 10
0 ≤ 10 * x + 3 * y ≤ 20

目标:
最大限度提高x + y

var engine = LinearOptimizationService.createEngine();

// Add variables, constraints and define the objective using addVariable(), addConstraint(), etc.
// Add two variables, 0 <= x <= 10 and 0 <= y <= 5
engine.addVariable('x', 0, 10);
engine.addVariable('y', 0, 5);

// Create the constraint: 0 <= 2 * x + 5 * y <= 10
var constraint = engine.addConstraint(0, 10);
constraint.setCoefficient('x', 2);
constraint.setCoefficient('y', 5);

// Create the constraint: 0 <= 10 * x + 3 * y <= 20
var constraint = engine.addConstraint(0, 20);
constraint.setCoefficient('x', 10);
constraint.setCoefficient('y', 3);

// Set the objective to be x + y
engine.setObjectiveCoefficient('x', 1);
engine.setObjectiveCoefficient('y', 1);

// Engine should maximize the objective.
engine.setMaximization();

// Solve the linear program
var solution = engine.solve();
if (!solution.isValid()) {
  Logger.log('No solution ' + solution.getStatus());
} else {
  Logger.log('Value of x: ' + solution.getVariableValue('x'));
  Logger.log('Value of y: ' + solution.getVariableValue('y'));
}

属性

属性类型说明
StatusStatus求解器的状态。
VariableTypeVariableType求解器创建的变量的类型。

方法

方法返回类型简介
createEngine()LinearOptimizationEngine创建一个引擎来解决线性程序(可能是混合整数程序)。

详细文档

createEngine()

创建一个引擎来解决线性程序(可能是混合整数程序)。

// Creates a linear optimization engine.
var engine = LinearOptimizationService.createEngine();
engine.addVariable('x', 0, 10);

// ...

返回

LinearOptimizationEngine - 线性优化引擎