PivotSelectionRule (Apache Commons Math 3.6.1 API)

java.lang.Object
- java.lang.Enum<PivotSelectionRule>
- - org.apache.commons.math3.optim.linear.PivotSelectionRule

All Implemented Interfaces:

Serializable, Comparable<PivotSelectionRule>, OptimizationData
```
public enum PivotSelectionRule
extends Enum<PivotSelectionRule>
implements OptimizationData
```
Pivot selection rule to the use for a Simplex solver.

Since:

3.3

Enum Constant Summary

Enum Constants
Enum Constant and Description
`BLAND` The first variable with a negative coefficient in the objective function row will be chosen as entering variable.
`DANTZIG` The classical rule, the variable with the most negative coefficient in the objective function row will be chosen as entering variable.

Method Summary

Methods
Modifier and Type	Method and Description
`static PivotSelectionRule`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static PivotSelectionRule[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - DANTZIG
```
public static final PivotSelectionRule DANTZIG
```
    The classical rule, the variable with the most negative coefficient in the objective function row will be chosen as entering variable.
  - BLAND
```
public static final PivotSelectionRule BLAND
```
    The first variable with a negative coefficient in the objective function row will be chosen as entering variable. This rule guarantees to prevent cycles, but may take longer to find an optimal solution.
- Method Detail
  - values
```
public static PivotSelectionRule[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (PivotSelectionRule c : PivotSelectionRule.values())
    System.out.println(c);
```
    Returns:
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static PivotSelectionRule valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    name - the name of the enum constant to be returned.
    
    Returns:
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null

Enum PivotSelectionRule

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

DANTZIG

BLAND

Method Detail

values

valueOf