com.google.ortools.sat

Enum SatParameters.SharedTreeSplitStrategy

java.lang.Object

java.lang.Enum<SatParameters.SharedTreeSplitStrategy>

com.google.ortools.sat.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 Summary

Enum Constants

Enum Constant and Description
SPLIT_STRATEGY_AUTO Uses the default strategy, currently equivalent to SPLIT_STRATEGY_DISCREPANCY.
SPLIT_STRATEGY_BALANCED_TREE Attempt to keep the shared tree balanced.
SPLIT_STRATEGY_DISCREPANCY Only accept splits if the node to be split's depth+discrepancy is minimal for the desired number of leaves.
SPLIT_STRATEGY_FIRST_PROPOSAL Workers race to split their subtree, the winner's proposal is accepted.
SPLIT_STRATEGY_OBJECTIVE_LB Only split nodes with an objective lb equal to the global lb.

Field Summary

Fields

Modifier and Type	Field and Description
static int	SPLIT_STRATEGY_AUTO_VALUE Uses the default strategy, currently equivalent to SPLIT_STRATEGY_DISCREPANCY.
static int	SPLIT_STRATEGY_BALANCED_TREE_VALUE Attempt to keep the shared tree balanced.
static 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.
static int	SPLIT_STRATEGY_FIRST_PROPOSAL_VALUE Workers race to split their subtree, the winner's proposal is accepted.
static int	SPLIT_STRATEGY_OBJECTIVE_LB_VALUE Only split nodes with an objective lb equal to the global lb.

Method Summary

Modifier and Type	Method and Description
static SatParameters.SharedTreeSplitStrategy	forNumber(int value)
static com.google.protobuf.Descriptors.EnumDescriptor	getDescriptor()
com.google.protobuf.Descriptors.EnumDescriptor	getDescriptorForType()
int	getNumber()
com.google.protobuf.Descriptors.EnumValueDescriptor	getValueDescriptor()
static com.google.protobuf.Internal.EnumLiteMap<SatParameters.SharedTreeSplitStrategy>	internalGetValueMap()
static SatParameters.SharedTreeSplitStrategy	valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc)
static SatParameters.SharedTreeSplitStrategy	valueOf(int value) Deprecated. Use forNumber(int) instead.
static SatParameters.SharedTreeSplitStrategy	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static SatParameters.SharedTreeSplitStrategy[]	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

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. If there is
 no objective, this is equivalent to SPLIT_STRATEGY_FIRST_PROPOSAL.
 

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. If there is
 no objective, this is equivalent to SPLIT_STRATEGY_FIRST_PROPOSAL.
 

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. Use forNumber(int) instead.

Parameters:

value - The numeric wire value of the corresponding enum entry.

Returns:

The enum associated with the given numeric wire value.

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.

internalGetValueMap

public static com.google.protobuf.Internal.EnumLiteMap<SatParameters.SharedTreeSplitStrategy> 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 final com.google.protobuf.Descriptors.EnumDescriptor getDescriptor()

valueOf

public static SatParameters.SharedTreeSplitStrategy valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc)