Google OR-Tools v9.9
a fast and portable software suite for combinatorial optimization
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Public Member Functions | |
final int | getNumber () |
final com.google.protobuf.Descriptors.EnumValueDescriptor | getValueDescriptor () |
final com.google.protobuf.Descriptors.EnumDescriptor | getDescriptorForType () |
Static Public Member Functions | |
static SearchBranching | valueOf (int value) |
static SearchBranching | forNumber (int value) |
static com.google.protobuf.Internal.EnumLiteMap< SearchBranching > | internalGetValueMap () |
static final com.google.protobuf.Descriptors.EnumDescriptor | getDescriptor () |
static SearchBranching | valueOf (com.google.protobuf.Descriptors.EnumValueDescriptor desc) |
Public Attributes | |
AUTOMATIC_SEARCH =(0) | |
FIXED_SEARCH =(1) | |
PORTFOLIO_SEARCH =(2) | |
LP_SEARCH =(3) | |
PSEUDO_COST_SEARCH =(4) | |
PORTFOLIO_WITH_QUICK_RESTART_SEARCH =(5) | |
HINT_SEARCH =(6) | |
PARTIAL_FIXED_SEARCH =(7) | |
RANDOMIZED_SEARCH =(8) | |
Static Public Attributes | |
static final int | AUTOMATIC_SEARCH_VALUE = 0 |
static final int | FIXED_SEARCH_VALUE = 1 |
static final int | PORTFOLIO_SEARCH_VALUE = 2 |
static final int | LP_SEARCH_VALUE = 3 |
static final int | PSEUDO_COST_SEARCH_VALUE = 4 |
static final int | PORTFOLIO_WITH_QUICK_RESTART_SEARCH_VALUE = 5 |
static final int | HINT_SEARCH_VALUE = 6 |
static final int | PARTIAL_FIXED_SEARCH_VALUE = 7 |
static final int | RANDOMIZED_SEARCH_VALUE = 8 |
The search branching will be used to decide how to branch on unfixed nodes.
Protobuf enum operations_research.sat.SatParameters.SearchBranching
Definition at line 1356 of file SatParameters.java.
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value | The numeric wire value of the corresponding enum entry. |
Definition at line 1554 of file SatParameters.java.
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Definition at line 1590 of file SatParameters.java.
final com.google.protobuf.Descriptors.EnumDescriptor com.google.ortools.sat.SatParameters.SearchBranching.getDescriptorForType | ( | ) |
Definition at line 1586 of file SatParameters.java.
final int com.google.ortools.sat.SatParameters.SearchBranching.getNumber | ( | ) |
Definition at line 1536 of file SatParameters.java.
final com.google.protobuf.Descriptors.EnumValueDescriptor com.google.ortools.sat.SatParameters.SearchBranching.getValueDescriptor | ( | ) |
Definition at line 1582 of file SatParameters.java.
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Definition at line 1570 of file SatParameters.java.
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Definition at line 1596 of file SatParameters.java.
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value | The numeric wire value of the corresponding enum entry. |
forNumber(int)
instead. Definition at line 1546 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.AUTOMATIC_SEARCH =(0) |
Try to fix all literals using the underlying SAT solver's heuristics, then generate and fix literals until integer variables are fixed. New literals on integer variables are generated using the fixed search specified by the user or our default one.
AUTOMATIC_SEARCH = 0;
Definition at line 1368 of file SatParameters.java.
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Try to fix all literals using the underlying SAT solver's heuristics, then generate and fix literals until integer variables are fixed. New literals on integer variables are generated using the fixed search specified by the user or our default one.
AUTOMATIC_SEARCH = 0;
Definition at line 1457 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.FIXED_SEARCH =(1) |
If used then all decisions taken by the solver are made using a fixed order as specified in the API or in the CpModelProto search_strategy field.
FIXED_SEARCH = 1;
Definition at line 1378 of file SatParameters.java.
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If used then all decisions taken by the solver are made using a fixed order as specified in the API or in the CpModelProto search_strategy field.
FIXED_SEARCH = 1;
Definition at line 1467 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.HINT_SEARCH =(6) |
Mainly used internally. This is like FIXED_SEARCH, except we follow the solution_hint field of the CpModelProto rather than using the information provided in the search_strategy.
HINT_SEARCH = 6;
Definition at line 1425 of file SatParameters.java.
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Mainly used internally. This is like FIXED_SEARCH, except we follow the solution_hint field of the CpModelProto rather than using the information provided in the search_strategy.
HINT_SEARCH = 6;
Definition at line 1514 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.LP_SEARCH =(3) |
If used, the solver will use heuristics from the LP relaxation. This exploit the reduced costs of the variables in the relaxation.
LP_SEARCH = 3;
Definition at line 1395 of file SatParameters.java.
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If used, the solver will use heuristics from the LP relaxation. This exploit the reduced costs of the variables in the relaxation.
LP_SEARCH = 3;
Definition at line 1484 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.PARTIAL_FIXED_SEARCH =(7) |
Similar to FIXED_SEARCH, but differ in how the variable not listed into the fixed search heuristics are branched on. This will always start the search tree according to the specified fixed search strategy, but will complete it using the default automatic search.
PARTIAL_FIXED_SEARCH = 7;
Definition at line 1436 of file SatParameters.java.
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Similar to FIXED_SEARCH, but differ in how the variable not listed into the fixed search heuristics are branched on. This will always start the search tree according to the specified fixed search strategy, but will complete it using the default automatic search.
PARTIAL_FIXED_SEARCH = 7;
Definition at line 1525 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.PORTFOLIO_SEARCH =(2) |
Simple portfolio search used by LNS workers.
PORTFOLIO_SEARCH = 2;
Definition at line 1386 of file SatParameters.java.
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Simple portfolio search used by LNS workers.
PORTFOLIO_SEARCH = 2;
Definition at line 1475 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.PORTFOLIO_WITH_QUICK_RESTART_SEARCH =(5) |
Mainly exposed here for testing. This quickly tries a lot of randomized heuristics with a low conflict limit. It usually provides a good first solution.
PORTFOLIO_WITH_QUICK_RESTART_SEARCH = 5;
Definition at line 1415 of file SatParameters.java.
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Mainly exposed here for testing. This quickly tries a lot of randomized heuristics with a low conflict limit. It usually provides a good first solution.
PORTFOLIO_WITH_QUICK_RESTART_SEARCH = 5;
Definition at line 1504 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.PSEUDO_COST_SEARCH =(4) |
If used, the solver uses the pseudo costs for branching. Pseudo costs are computed using the historical change in objective bounds when some decision are taken. Note that this works whether we use an LP or not.
PSEUDO_COST_SEARCH = 4;
Definition at line 1405 of file SatParameters.java.
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If used, the solver uses the pseudo costs for branching. Pseudo costs are computed using the historical change in objective bounds when some decision are taken. Note that this works whether we use an LP or not.
PSEUDO_COST_SEARCH = 4;
Definition at line 1494 of file SatParameters.java.
com.google.ortools.sat.SatParameters.SearchBranching.RANDOMIZED_SEARCH =(8) |
Randomized search. Used to increase entropy in the search.
RANDOMIZED_SEARCH = 8;
Definition at line 1444 of file SatParameters.java.
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Randomized search. Used to increase entropy in the search.
RANDOMIZED_SEARCH = 8;
Definition at line 1533 of file SatParameters.java.