Enum GlopParameters.PricingRule

java.lang.Object
java.lang.Enum<GlopParameters.PricingRule>
com.google.ortools.glop.GlopParameters.PricingRule
All Implemented Interfaces:
com.google.protobuf.Internal.EnumLite, com.google.protobuf.ProtocolMessageEnum, Serializable, Comparable<GlopParameters.PricingRule>, java.lang.constant.Constable
Enclosing class:
GlopParameters
public static enum GlopParameters.PricingRule extends Enum<GlopParameters.PricingRule> implements com.google.protobuf.ProtocolMessageEnum
 General strategy used during pricing.
Protobuf enum operations_research.glop.GlopParameters.PricingRule

  • Enum Constant Details

    • DANTZIG

      public static final GlopParameters.PricingRule DANTZIG
       Strategy using only the reduced cost of a variable.

 Note that compared to a textbook rule, we normalize the reduced cost of a
 variable using the norm of the associated column. This improves quite a
 bit the rule at almost no extra complexity. See the first paper from
 Ping-Qi Pan cited in primal_edge_norms.h.
      DANTZIG = 0;

    • STEEPEST_EDGE

      public static final GlopParameters.PricingRule STEEPEST_EDGE
       Normalize the reduced costs by the norm of the edges. Since computing
 norms at each step is too expensive, reduced costs and norms are
 updated iteratively from one iteration to the next.
      STEEPEST_EDGE = 1;

    • DEVEX

      public static final GlopParameters.PricingRule DEVEX
       Normalize the reduced costs by an approximation of the norm of the edges.
 This should offer a good tradeoff between steepest edge and speed.
      DEVEX = 2;

  • Field Details

    • DANTZIG_VALUE

      public static final int DANTZIG_VALUE
       Strategy using only the reduced cost of a variable.

 Note that compared to a textbook rule, we normalize the reduced cost of a
 variable using the norm of the associated column. This improves quite a
 bit the rule at almost no extra complexity. See the first paper from
 Ping-Qi Pan cited in primal_edge_norms.h.
      DANTZIG = 0;
      See Also:

    • STEEPEST_EDGE_VALUE

      public static final int STEEPEST_EDGE_VALUE
       Normalize the reduced costs by the norm of the edges. Since computing
 norms at each step is too expensive, reduced costs and norms are
 updated iteratively from one iteration to the next.
      STEEPEST_EDGE = 1;
      See Also:

    • DEVEX_VALUE

      public static final int DEVEX_VALUE
       Normalize the reduced costs by an approximation of the norm of the edges.
 This should offer a good tradeoff between steepest edge and speed.
      DEVEX = 2;
      See Also:

  • Method Details

    • values

      public static GlopParameters.PricingRule[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      Returns:
      an array containing the constants of this enum type, in the order they are declared

    • valueOf

      public static GlopParameters.PricingRule 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

    • getNumber

      public final int getNumber()
      Specified by:
      getNumber in interface com.google.protobuf.Internal.EnumLite
      Specified by:
      getNumber in interface com.google.protobuf.ProtocolMessageEnum

    • valueOf

      @Deprecated public static GlopParameters.PricingRule valueOf(int value)
      Deprecated.
      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:
      value - 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

    • forNumber

      public static GlopParameters.PricingRule forNumber(int value)
      Parameters:
      value - The numeric wire value of the corresponding enum entry.
      Returns:
      The enum associated with the given numeric wire value.

    • internalGetValueMap

      public static com.google.protobuf.Internal.EnumLiteMap<GlopParameters.PricingRule> internalGetValueMap()

    • getValueDescriptor

      public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor()
      Specified by:
      getValueDescriptor in interface com.google.protobuf.ProtocolMessageEnum

    • getDescriptorForType

      public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType()
      Specified by:
      getDescriptorForType in interface com.google.protobuf.ProtocolMessageEnum

    • getDescriptor

      public static com.google.protobuf.Descriptors.EnumDescriptor getDescriptor()

    • valueOf

      public static GlopParameters.PricingRule valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc)
      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:
      desc - 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