LinearObjectiveFunction (Apache Commons Math 3.3 API)

org.apache.commons.math3.optim.linear

## Class LinearObjectiveFunction

- java.lang.Object
- - org.apache.commons.math3.optim.linear.LinearObjectiveFunction

- All Implemented Interfaces:
    Serializable, MultivariateFunction, OptimizationData

      public class LinearObjectiveFunction
      extends Object
      implements MultivariateFunction, OptimizationData, Serializable

  An objective function for a linear optimization problem.

  A linear objective function has one the form:

       c1x1 + ... cnxn + d

  The ci and d are the coefficients of the equation, the xi are the coordinates of the current point.
  Since:
    2.0
  Version:
    $Id: LinearObjectiveFunction.java 1435539 2013-01-19 13:27:24Z tn $
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `LinearObjectiveFunction(double[] coefficients, double constantTerm)`
    `LinearObjectiveFunction(RealVector coefficients, double constantTerm)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `equals(Object other)`
    `RealVector` | `getCoefficients()` Gets the coefficients of the linear equation being optimized.
    `double` | `getConstantTerm()` Gets the constant of the linear equation being optimized.
    `int` | `hashCode()`
    `double` | `value(double[] point)` Computes the value of the linear equation at the current point.
    `double` | `value(RealVector point)` Computes the value of the linear equation at the current point.

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### LinearObjectiveFunction

          public LinearObjectiveFunction(double[] coefficients,
                                 double constantTerm)

      Parameters:
        `coefficients` - Coefficients for the linear equation being optimized.
        `constantTerm` - Constant term of the linear equation.

    - #### LinearObjectiveFunction

          public LinearObjectiveFunction(RealVector coefficients,
                                 double constantTerm)

      Parameters:
        `coefficients` - Coefficients for the linear equation being optimized.
        `constantTerm` - Constant term of the linear equation.

  - ### Method Detail

    - #### getCoefficients

          public RealVector getCoefficients()

      Gets the coefficients of the linear equation being optimized.
      Returns:
        coefficients of the linear equation being optimized.

    - #### getConstantTerm

          public double getConstantTerm()

      Gets the constant of the linear equation being optimized.
      Returns:
        constant of the linear equation being optimized.

    - #### value

          public double value(double[] point)

      Computes the value of the linear equation at the current point.
      Specified by:
        `value` in interface `MultivariateFunction`
      Parameters:
        `point` - Point at which linear equation must be evaluated.
      Returns:
        the value of the linear equation at the current point.

    - #### value

          public double value(RealVector point)

      Computes the value of the linear equation at the current point.
      Parameters:
        `point` - Point at which linear equation must be evaluated.
      Returns:
        the value of the linear equation at the current point.

    - #### equals

          public boolean equals(Object other)

      Overrides:
        `equals` in class `Object`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`

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