solution

Documentation

Index

• func ExtractValueOfVariable(s Solution, v symbolic.Variable) (float64, error)
• func ExtractValueOfVariableWithID(s Solution, idx uint64) (float64, error)
• func FindValueOfExpression(s Solution, expr symbolic.Expression) (symbolic.Expression, error)
• func GetOptimalObjectiveValue(sol Solution) (float64, error)
• type DummySolution
  • func (ds *DummySolution) GetOptimalValue() float64
  • func (ds *DummySolution) GetProblem() *problem.OptimizationProblem
  • func (ds *DummySolution) GetStatus() solution_status.SolutionStatus
  • func (ds *DummySolution) GetValueMap() map[uint64]float64
• type Solution

Functions

func ExtractValueOfVariable

func ExtractValueOfVariable(s Solution, v symbolic.Variable) (float64, error)

func ExtractValueOfVariableWithID

func ExtractValueOfVariableWithID(s Solution, idx uint64) (float64, error)

func FindValueOfExpression

func FindValueOfExpression(s Solution, expr symbolic.Expression) (symbolic.Expression, error)

FindValueOfExpression evaluates a symbolic expression using the values from a solution. It substitutes all variables in the expression with their values from the solution and returns the resulting symbolic expression (typically a constant).

func GetOptimalObjectiveValue

func GetOptimalObjectiveValue(sol Solution) (float64, error)

GetOptimalObjectiveValue evaluates the objective function of an optimization problem at the solution point. It uses the FindValueOfExpression function to compute the value of the objective expression using the variable values from the solution.

Types

type DummySolution

type DummySolution struct {
	Values map[uint64]float64

	// The objective for the solution
	Objective float64

	// Whether or not the solution is within the optimality threshold
	Status solution_status.SolutionStatus

	// The optimization problem that this solution is for
	Problem *problem.OptimizationProblem
}

func (*DummySolution) GetOptimalValue

func (ds *DummySolution) GetOptimalValue() float64

func (*DummySolution) GetProblem

func (ds *DummySolution) GetProblem() *problem.OptimizationProblem

func (*DummySolution) GetStatus

func (ds *DummySolution) GetStatus() solution_status.SolutionStatus

func (*DummySolution) GetValueMap

func (ds *DummySolution) GetValueMap() map[uint64]float64

type Solution

type Solution interface {
	GetOptimalValue() float64
	GetValueMap() map[uint64]float64

	// GetStatus
	//
	GetStatus() solution_status.SolutionStatus

	// GetProblem returns the optimization problem that this solution is for
	GetProblem() *problem.OptimizationProblem
}

Solution stores the solution of an optimization problem and associated metadata