com.google.ortools.sat.CpObjectiveProtoOrBuilder Interface Reference

Inheritance diagram for com.google.ortools.sat.CpObjectiveProtoOrBuilder:

Public Member Functions
java.util.List< java.lang.Integer >	getVarsList ()
int	getVarsCount ()
int	getVars (int index)
java.util.List< java.lang.Long >	getCoeffsList ()
int	getCoeffsCount ()
long	getCoeffs (int index)
double	getOffset ()
double	getScalingFactor ()
java.util.List< java.lang.Long >	getDomainList ()
int	getDomainCount ()
long	getDomain (int index)
boolean	getScalingWasExact ()
long	getIntegerBeforeOffset ()
long	getIntegerAfterOffset ()
long	getIntegerScalingFactor ()

Detailed Description

Definition at line 7 of file CpObjectiveProtoOrBuilder.java.

Member Function Documentation

getCoeffs()

long com.google.ortools.sat.CpObjectiveProtoOrBuilder.getCoeffs

(

int

index

)

repeated int64 coeffs = 4;

Parameters

index

The index of the element to return.

Returns

The coeffs at the given index.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getCoeffsCount()

int com.google.ortools.sat.CpObjectiveProtoOrBuilder.getCoeffsCount

(

)

repeated int64 coeffs = 4;

Returns

The count of coeffs.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getCoeffsList()

java.util.List< java.lang.Long > com.google.ortools.sat.CpObjectiveProtoOrBuilder.getCoeffsList

(

)

repeated int64 coeffs = 4;

Returns

A list containing the coeffs.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getDomain()

long com.google.ortools.sat.CpObjectiveProtoOrBuilder.getDomain

(

int

index

)

If non-empty, only look for an objective value in the given domain.
Note that this does not depend on the offset or scaling factor, it is a
domain on the sum of the objective terms only.

repeated int64 domain = 5;

Parameters

index

The index of the element to return.

Returns

The domain at the given index.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getDomainCount()

int com.google.ortools.sat.CpObjectiveProtoOrBuilder.getDomainCount

(

)

If non-empty, only look for an objective value in the given domain.
Note that this does not depend on the offset or scaling factor, it is a
domain on the sum of the objective terms only.

repeated int64 domain = 5;

Returns

The count of domain.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getDomainList()

java.util.List< java.lang.Long > com.google.ortools.sat.CpObjectiveProtoOrBuilder.getDomainList

(

)

If non-empty, only look for an objective value in the given domain.
Note that this does not depend on the offset or scaling factor, it is a
domain on the sum of the objective terms only.

repeated int64 domain = 5;

Returns

A list containing the domain.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getIntegerAfterOffset()

long com.google.ortools.sat.CpObjectiveProtoOrBuilder.getIntegerAfterOffset

(

)

int64 integer_after_offset = 9;

Returns

The integerAfterOffset.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getIntegerBeforeOffset()

long com.google.ortools.sat.CpObjectiveProtoOrBuilder.getIntegerBeforeOffset

(

)

Internal fields to recover a bound on the original integer objective from
the presolved one. Basically, initially the integer objective fit on an
int64 and is in [Initial_lb, Initial_ub]. During presolve, we might change
the linear expression to have a new domain [Presolved_lb, Presolved_ub]
that will also always fit on an int64.

The two domain will always be linked with an affine transformation between
the two of the form:
old = (new + before_offset) * integer_scaling_factor + after_offset.
Note that we use both offsets to always be able to do the computation while
staying in the int64 domain. In particular, the after_offset will always
be in (-integer_scaling_factor, integer_scaling_factor).

int64 integer_before_offset = 7;

Returns

The integerBeforeOffset.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getIntegerScalingFactor()

long com.google.ortools.sat.CpObjectiveProtoOrBuilder.getIntegerScalingFactor

(

)

int64 integer_scaling_factor = 8;

Returns

The integerScalingFactor.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getOffset()

double com.google.ortools.sat.CpObjectiveProtoOrBuilder.getOffset

(

)

The displayed objective is always:
scaling_factor * (sum(coefficients[i] * objective_vars[i]) + offset).
This is needed to have a consistent objective after presolve or when
scaling a double problem to express it with integers.

Note that if scaling_factor is zero, then it is assumed to be 1, so that by
default these fields have no effect.

double offset = 2;

Returns

The offset.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getScalingFactor()

double com.google.ortools.sat.CpObjectiveProtoOrBuilder.getScalingFactor

(

)

double scaling_factor = 3;

Returns

The scalingFactor.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getScalingWasExact()

boolean com.google.ortools.sat.CpObjectiveProtoOrBuilder.getScalingWasExact

(

)

Internal field. Do not set. When we scale a FloatObjectiveProto to a
integer version, we set this to true if the scaling was exact (i.e. all
original coeff were integer for instance).

TODO(user): Put the error bounds we computed instead?

bool scaling_was_exact = 6;

Returns

The scalingWasExact.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getVars()

int com.google.ortools.sat.CpObjectiveProtoOrBuilder.getVars

(

int

index

)

The linear terms of the objective to minimize.
For a maximization problem, one can negate all coefficients in the
objective and set scaling_factor to -1.

repeated int32 vars = 1;

Parameters

index

The index of the element to return.

Returns

The vars at the given index.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getVarsCount()

int com.google.ortools.sat.CpObjectiveProtoOrBuilder.getVarsCount

(

)

The linear terms of the objective to minimize.
For a maximization problem, one can negate all coefficients in the
objective and set scaling_factor to -1.

repeated int32 vars = 1;

Returns

The count of vars.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

getVarsList()

java.util.List< java.lang.Integer > com.google.ortools.sat.CpObjectiveProtoOrBuilder.getVarsList

(

)

The linear terms of the objective to minimize.
For a maximization problem, one can negate all coefficients in the
objective and set scaling_factor to -1.

repeated int32 vars = 1;

Returns

A list containing the vars.

Implemented in com.google.ortools.sat.CpObjectiveProto.Builder, and com.google.ortools.sat.CpObjectiveProto.

---

The documentation for this interface was generated from the following file:

• build/java/ortools-java/src/main/java/com/google/ortools/sat/CpObjectiveProtoOrBuilder.java