Package com.google.ortools.glop

Enum GlopParameters.PricingRule

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

    • Enum Constant Detail

      • 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 Detail

      • 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:
        Constant Field Values

      • 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:
        Constant Field Values

      • 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:
        Constant Field Values

    • Method Detail

      • values

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

      • valueOf

        public static GlopParameters.PricingRule valueOf​(java.lang.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:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.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:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.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.

      • 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 final 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:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null