Detailed Description

This class defines a linear cost function c'x which is a JacobianFactor with only one row.

Inheritance diagram for gtsam::LinearCost:

Public Member Functions
	LinearCost ()
	default constructor for I/O

	LinearCost (const HessianFactor &hf)
	Conversion from HessianFactor.

	LinearCost (const JacobianFactor &jf)
	Conversion from JacobianFactor.

	LinearCost (Key i1, const RowVector &A1)
	Construct unary factor.

	LinearCost (Key i1, const RowVector &A1, Key i2, const RowVector &A2, double b)
	Construct binary factor.

	LinearCost (Key i1, const RowVector &A1, Key i2, const RowVector &A2, Key i3, const RowVector &A3)
	Construct ternary factor.

template<typename TERMS >
	LinearCost (const TERMS &terms)
	Construct an n-ary factor. More...

	~LinearCost () override
	Virtual destructor.

bool	equals (const GaussianFactor &lf, double tol=1e-9) const override
	equals More...

void	print (const std::string &s="", const KeyFormatter &formatter=DefaultKeyFormatter) const override
	print More...

GaussianFactor::shared_ptr	clone () const override
	Clone this LinearCost. More...

Vector	error_vector (const VectorValues &c) const
	Special error_vector for constraints (A*x-b)

double	error (const VectorValues &c) const override
	Special error for single-valued inequality constraints. More...

Public Member Functions inherited from gtsam::JacobianFactor
	JacobianFactor (const GaussianFactor &gf)
	Convert from other GaussianFactor.

	JacobianFactor (const JacobianFactor &jf)
	Copy constructor.

	JacobianFactor (const HessianFactor &hf)
	Conversion from HessianFactor (does Cholesky to obtain Jacobian matrix)

	JacobianFactor ()
	default constructor for I/O

	JacobianFactor (const Vector &b_in)
	Construct Null factor.

	JacobianFactor (Key i1, const Matrix &A1, const Vector &b, const SharedDiagonal &model=SharedDiagonal())
	Construct unary factor.

	JacobianFactor (Key i1, const Matrix &A1, Key i2, const Matrix &A2, const Vector &b, const SharedDiagonal &model=SharedDiagonal())
	Construct binary factor.

	JacobianFactor (Key i1, const Matrix &A1, Key i2, const Matrix &A2, Key i3, const Matrix &A3, const Vector &b, const SharedDiagonal &model=SharedDiagonal())
	Construct ternary factor.

template<typename TERMS >
	JacobianFactor (const TERMS &terms, const Vector &b, const SharedDiagonal &model=SharedDiagonal())
	Construct an n-ary factor. More...

template<typename KEYS >
	JacobianFactor (const KEYS &keys, const VerticalBlockMatrix &augmentedMatrix, const SharedDiagonal &sigmas=SharedDiagonal())
	Constructor with arbitrary number keys, and where the augmented matrix is given all together instead of in block terms. More...

	JacobianFactor (const GaussianFactorGraph &graph)
	Build a dense joint factor from all the factors in a factor graph. More...

	JacobianFactor (const GaussianFactorGraph &graph, const VariableSlots &p_variableSlots)
	Build a dense joint factor from all the factors in a factor graph. More...

	JacobianFactor (const GaussianFactorGraph &graph, const Ordering &ordering)
	Build a dense joint factor from all the factors in a factor graph. More...

	JacobianFactor (const GaussianFactorGraph &graph, const Ordering &ordering, const VariableSlots &p_variableSlots)
	Build a dense joint factor from all the factors in a factor graph. More...

	~JacobianFactor () override
	Virtual destructor.

GaussianFactor::shared_ptr	clone () const override
	Clone this JacobianFactor. More...

void	print (const std::string &s="", const KeyFormatter &formatter=DefaultKeyFormatter) const override
	print More...

bool	equals (const GaussianFactor &lf, double tol=1e-9) const override
	Equals for testable. More...

Vector	unweighted_error (const VectorValues &c) const

Vector	error_vector (const VectorValues &c) const
	(A*x-b)

double	error (const VectorValues &c) const override
	(A*x-b)/sigma More...

Matrix	augmentedInformation () const override
	0.5(Ax-b)'D(A*x-b) More...

Matrix	information () const override
	Return the non-augmented information matrix represented by this GaussianFactor. More...

void	hessianDiagonalAdd (VectorValues &d) const override
	Add the current diagonal to a VectorValues instance. More...

void	hessianDiagonal (double *d) const override
	Raw memory access version of hessianDiagonal. More...

std::map< Key, Matrix >	hessianBlockDiagonal () const override
	Return the block diagonal of the Hessian for this factor. More...

std::pair< Matrix, Vector >	jacobian () const override
	Returns (dense) A,b pair associated with factor, bakes in the weights. More...

std::pair< Matrix, Vector >	jacobianUnweighted () const
	Returns (dense) A,b pair associated with factor, does not bake in weights.

Matrix	augmentedJacobian () const override
	Return (dense) matrix associated with factor. More...

Matrix	augmentedJacobianUnweighted () const
	Return (dense) matrix associated with factor. More...

const VerticalBlockMatrix &	matrixObject () const
	Return the full augmented Jacobian matrix of this factor as a VerticalBlockMatrix object.

VerticalBlockMatrix &	matrixObject ()
	Mutable access to the full augmented Jacobian matrix of this factor as a VerticalBlockMatrix object.

GaussianFactor::shared_ptr	negate () const override
	Construct the corresponding anti-factor to negate information stored stored in this factor. More...

bool	empty () const override
	Check if the factor is empty. More...

bool	isConstrained () const
	is noise model constrained ?

DenseIndex	getDim (const_iterator variable) const override
	Return the dimension of the variable pointed to by the given key iterator todo: Remove this in favor of keeping track of dimensions with variables? More...

size_t	rows () const
	return the number of rows in the corresponding linear system

size_t	cols () const
	return the number of columns in the corresponding linear system

const SharedDiagonal &	get_model () const
	get a copy of model

SharedDiagonal &	get_model ()
	get a copy of model (non-const version)

const constBVector	getb () const
	Get a view of the r.h.s. More...

constABlock	getA (const_iterator variable) const
	Get a view of the A matrix for the variable pointed to by the given key iterator.

constABlock	getA () const
	Get a view of the A matrix, not weighted by noise.

BVector	getb ()
	Get a view of the r.h.s. More...

ABlock	getA (iterator variable)
	Get a view of the A matrix for the variable pointed to by the given key iterator (non-const version)

ABlock	getA ()
	Get a view of the A matrix.

void	updateHessian (const KeyVector &keys, SymmetricBlockMatrix *info) const override
	Update an information matrix by adding the information corresponding to this factor (used internally during elimination). More...

Vector	operator* (const VectorValues &x) const
	Return A*x.

void	transposeMultiplyAdd (double alpha, const Vector &e, VectorValues &x) const
	x += alpha * A'*e. More...

void	multiplyHessianAdd (double alpha, const VectorValues &x, VectorValues &y) const override
	y += alpha * A'Ax More...

void	multiplyHessianAdd (double alpha, const double x, double y, const std::vector< size_t > &accumulatedDims) const
	Raw memory access version of multiplyHessianAdd y += alpha * A'Ax Requires the vector accumulatedDims to tell the dimension of each variable: e.g. More...

VectorValues	gradientAtZero () const override
	A'*b for Jacobian. More...

void	gradientAtZero (double *d) const override
	A'*b for Jacobian (raw memory version) More...

Vector	gradient (Key key, const VectorValues &x) const override
	Compute the gradient wrt a key at any values. More...

JacobianFactor	whiten () const
	Return a whitened version of the factor, i.e. More...

std::pair< boost::shared_ptr< GaussianConditional >, shared_ptr >	eliminate (const Ordering &keys)
	Eliminate the requested variables.

void	setModel (bool anyConstrained, const Vector &sigmas)
	set noiseModel correctly

boost::shared_ptr< GaussianConditional >	splitConditional (size_t nrFrontals)
	splits a pre-factorized factor into a conditional, and changes the current factor to be the remaining component. More...

Public Member Functions inherited from gtsam::GaussianFactor
	GaussianFactor ()
	Default constructor creates empty factor.

template<typename CONTAINER >
	GaussianFactor (const CONTAINER &keys)
	Construct from container of keys. More...

virtual	~GaussianFactor ()
	Destructor.

void	print (const std::string &s="", const KeyFormatter &formatter=DefaultKeyFormatter) const override=0
	print More...

virtual bool	equals (const GaussianFactor &lf, double tol=1e-9) const =0
	Equals for testable. More...

virtual double	error (const VectorValues &c) const =0
	Print for testable. More...

virtual DenseIndex	getDim (const_iterator variable) const =0
	0.5(Ax-b)'D(A*x-b) More...

virtual Matrix	augmentedJacobian () const =0
	Return a dense \( [ \;A\;b\; ] \in \mathbb{R}^{m \times n+1} \) Jacobian matrix, augmented with b with the noise models baked into A and b. More...

virtual std::pair< Matrix, Vector >	jacobian () const =0
	Return the dense Jacobian \( A \) and right-hand-side \( b \), with the noise models baked into A and b. More...

virtual Matrix	augmentedInformation () const =0
	Return the augmented information matrix represented by this GaussianFactor. More...

virtual Matrix	information () const =0
	Return the non-augmented information matrix represented by this GaussianFactor. More...

VectorValues	hessianDiagonal () const
	Return the diagonal of the Hessian for this factor.

virtual void	hessianDiagonalAdd (VectorValues &d) const =0
	Add the current diagonal to a VectorValues instance. More...

virtual void	hessianDiagonal (double *d) const =0
	Raw memory access version of hessianDiagonal. More...

virtual std::map< Key, Matrix >	hessianBlockDiagonal () const =0
	Return the block diagonal of the Hessian for this factor. More...

virtual GaussianFactor::shared_ptr	clone () const =0
	Clone a factor (make a deep copy) More...

virtual bool	empty () const =0
	Test whether the factor is empty. More...

virtual GaussianFactor::shared_ptr	negate () const =0
	Construct the corresponding anti-factor to negate information stored stored in this factor. More...

virtual void	updateHessian (const KeyVector &keys, SymmetricBlockMatrix *info) const =0
	Update an information matrix by adding the information corresponding to this factor (used internally during elimination). More...

virtual void	multiplyHessianAdd (double alpha, const VectorValues &x, VectorValues &y) const =0
	y += alpha * A'Ax More...

virtual VectorValues	gradientAtZero () const =0
	A'*b for Jacobian, eta for Hessian. More...

virtual void	gradientAtZero (double *d) const =0
	Raw memory access version of gradientAtZero. More...

virtual Vector	gradient (Key key, const VectorValues &x) const =0
	Gradient wrt a key at any values. More...

Public Member Functions inherited from gtsam::Factor
virtual	~Factor ()=default
	Default destructor.

KeyVector &	keys ()

iterator	begin ()
	Iterator at beginning of involved variable keys.

iterator	end ()
	Iterator at end of involved variable keys.

virtual void	printKeys (const std::string &s="Factor", const KeyFormatter &formatter=DefaultKeyFormatter) const
	print only keys More...

Key	front () const
	First key.

Key	back () const
	Last key.

const_iterator	find (Key key) const
	find

const KeyVector &	keys () const
	Access the factor's involved variable keys.

const_iterator	begin () const
	Iterator at beginning of involved variable keys.

const_iterator	end () const
	Iterator at end of involved variable keys.

size_t	size () const

Public Types
typedef LinearCost	This
	Typedef to this class.

typedef JacobianFactor	Base
	Typedef to base class.

typedef boost::shared_ptr< This >	shared_ptr
	shared_ptr to this class

Public Types inherited from gtsam::JacobianFactor
typedef JacobianFactor	This
	Typedef to this class.

typedef GaussianFactor	Base
	Typedef to base class.

typedef boost::shared_ptr< This >	shared_ptr
	shared_ptr to this class

typedef VerticalBlockMatrix::Block	ABlock

typedef VerticalBlockMatrix::constBlock	constABlock

typedef ABlock::ColXpr	BVector

typedef constABlock::ConstColXpr	constBVector

Public Types inherited from gtsam::GaussianFactor
typedef GaussianFactor	This
	This class.

typedef boost::shared_ptr< This >	shared_ptr
	shared_ptr to this class

typedef Factor	Base
	Our base class.

Public Types inherited from gtsam::Factor
typedef KeyVector::iterator	iterator
	Iterator over keys.

typedef KeyVector::const_iterator	const_iterator
	Const iterator over keys.

Additional Inherited Members
Static Public Member Functions inherited from gtsam::GaussianFactor
template<typename CONTAINER >
static DenseIndex	Slot (const CONTAINER &keys, Key key)

Protected Member Functions inherited from gtsam::JacobianFactor
template<typename TERMS >
void	fillTerms (const TERMS &terms, const Vector &b, const SharedDiagonal &noiseModel)
	Internal function to fill blocks and set dimensions.

Protected Member Functions inherited from gtsam::Factor
	Factor ()
	Default constructor for I/O.

template<typename CONTAINER >
	Factor (const CONTAINER &keys)
	Construct factor from container of keys. More...

template<typename ITERATOR >
	Factor (ITERATOR first, ITERATOR last)
	Construct factor from iterator keys. More...

bool	equals (const This &other, double tol=1e-9) const
	check equality

Static Protected Member Functions inherited from gtsam::Factor
template<typename CONTAINER >
static Factor	FromKeys (const CONTAINER &keys)
	Construct factor from container of keys. More...

template<typename ITERATOR >
static Factor	FromIterators (ITERATOR first, ITERATOR last)
	Construct factor from iterator keys. More...

Protected Attributes inherited from gtsam::JacobianFactor
VerticalBlockMatrix	Ab_

noiseModel::Diagonal::shared_ptr	model_

Protected Attributes inherited from gtsam::Factor
KeyVector	keys_
	The keys involved in this factor.

Constructor & Destructor Documentation

◆ LinearCost()

template<typename TERMS >

gtsam::LinearCost::LinearCost ( const TERMS & terms )

inline

Construct an n-ary factor.

Template Parameters

TERMS A container whose value type is std::pair<Key, Matrix>, specifying the collection of keys and matrices making up the factor.

Member Function Documentation

◆ clone()

GaussianFactor::shared_ptr gtsam::LinearCost::clone ( ) const

inlineoverridevirtual

Clone this LinearCost.

Reimplemented from gtsam::JacobianFactor.

◆ equals()

bool gtsam::LinearCost::equals	(	const GaussianFactor &	lf,
		double	tol = `1e-9`
	)		const

inlineoverridevirtual

equals

Reimplemented from gtsam::JacobianFactor.

◆ error()

double gtsam::LinearCost::error ( const VectorValues & c ) const

inlineoverridevirtual

Special error for single-valued inequality constraints.

Reimplemented from gtsam::JacobianFactor.

◆ print()

void gtsam::LinearCost::print	(	const std::string &	s = `""`,
		const KeyFormatter &	formatter = `DefaultKeyFormatter`
	)		const

inlineoverridevirtual

print

Reimplemented from gtsam::JacobianFactor.

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

/Users/dellaert/git/github/gtsam_unstable/linear/LinearCost.h

Detailed Description

Public Member Functions

Public Types

Additional Inherited Members

Constructor & Destructor Documentation

◆ LinearCost()

Member Function Documentation

◆ clone()

◆ equals()

◆ error()

◆ print()