Package com.google.ortools.sat

Enum SatParameters.SharedTreeSplitStrategy

  • All Implemented Interfaces:
    com.google.protobuf.Internal.EnumLite, com.google.protobuf.ProtocolMessageEnum, java.io.Serializable, java.lang.Comparable<SatParameters.SharedTreeSplitStrategy>
    Enclosing class:
    SatParameters
    public static enum SatParameters.SharedTreeSplitStrategy
extends java.lang.Enum<SatParameters.SharedTreeSplitStrategy>
implements com.google.protobuf.ProtocolMessageEnum
    Protobuf enum operations_research.sat.SatParameters.SharedTreeSplitStrategy

    • Enum Constant Detail

      • SPLIT_STRATEGY_AUTO

        public static final SatParameters.SharedTreeSplitStrategy SPLIT_STRATEGY_AUTO
         Uses the default strategy, currently equivalent to
 SPLIT_STRATEGY_DISCREPANCY.
        SPLIT_STRATEGY_AUTO = 0;

      • SPLIT_STRATEGY_DISCREPANCY

        public static final SatParameters.SharedTreeSplitStrategy SPLIT_STRATEGY_DISCREPANCY
         Only accept splits if the node to be split's depth+discrepancy is minimal
 for the desired number of leaves.
 The preferred child for discrepancy calculation is the one with the
 lowest objective lower bound or the original branch direction if the
 bounds are equal. This rule allows twice as many workers to work in the
 preferred subtree as non-preferred.
        SPLIT_STRATEGY_DISCREPANCY = 1;

      • SPLIT_STRATEGY_OBJECTIVE_LB

        public static final SatParameters.SharedTreeSplitStrategy SPLIT_STRATEGY_OBJECTIVE_LB
         Only split nodes with an objective lb equal to the global lb.
        SPLIT_STRATEGY_OBJECTIVE_LB = 2;

      • SPLIT_STRATEGY_BALANCED_TREE

        public static final SatParameters.SharedTreeSplitStrategy SPLIT_STRATEGY_BALANCED_TREE
         Attempt to keep the shared tree balanced.
        SPLIT_STRATEGY_BALANCED_TREE = 3;

      • SPLIT_STRATEGY_FIRST_PROPOSAL

        public static final SatParameters.SharedTreeSplitStrategy SPLIT_STRATEGY_FIRST_PROPOSAL
         Workers race to split their subtree, the winner's proposal is accepted.
        SPLIT_STRATEGY_FIRST_PROPOSAL = 4;

    • Field Detail

      • SPLIT_STRATEGY_AUTO_VALUE

        public static final int SPLIT_STRATEGY_AUTO_VALUE
         Uses the default strategy, currently equivalent to
 SPLIT_STRATEGY_DISCREPANCY.
        SPLIT_STRATEGY_AUTO = 0;
        See Also:
        Constant Field Values

      • SPLIT_STRATEGY_DISCREPANCY_VALUE

        public static final int SPLIT_STRATEGY_DISCREPANCY_VALUE
         Only accept splits if the node to be split's depth+discrepancy is minimal
 for the desired number of leaves.
 The preferred child for discrepancy calculation is the one with the
 lowest objective lower bound or the original branch direction if the
 bounds are equal. This rule allows twice as many workers to work in the
 preferred subtree as non-preferred.
        SPLIT_STRATEGY_DISCREPANCY = 1;
        See Also:
        Constant Field Values

      • SPLIT_STRATEGY_OBJECTIVE_LB_VALUE

        public static final int SPLIT_STRATEGY_OBJECTIVE_LB_VALUE
         Only split nodes with an objective lb equal to the global lb.
        SPLIT_STRATEGY_OBJECTIVE_LB = 2;
        See Also:
        Constant Field Values

      • SPLIT_STRATEGY_BALANCED_TREE_VALUE

        public static final int SPLIT_STRATEGY_BALANCED_TREE_VALUE
         Attempt to keep the shared tree balanced.
        SPLIT_STRATEGY_BALANCED_TREE = 3;
        See Also:
        Constant Field Values

      • SPLIT_STRATEGY_FIRST_PROPOSAL_VALUE

        public static final int SPLIT_STRATEGY_FIRST_PROPOSAL_VALUE
         Workers race to split their subtree, the winner's proposal is accepted.
        SPLIT_STRATEGY_FIRST_PROPOSAL = 4;
        See Also:
        Constant Field Values

    • Method Detail

      • values

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

      • valueOf

        public static SatParameters.SharedTreeSplitStrategy 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 SatParameters.SharedTreeSplitStrategy 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 SatParameters.SharedTreeSplitStrategy 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 SatParameters.SharedTreeSplitStrategy 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