UnconstrProblem< Conf > Class Template Reference

#include <alpaqa/problem/unconstr-problem.hpp>

Detailed Description

template<Config Conf>
class alpaqa::UnconstrProblem< Conf >

Implements common problem functions for minimization problems without constraints.

Meant to be used as a base class for custom problem implementations.

Examples

C++/SimpleUnconstrProblem/main.cpp.

Definition at line 14 of file unconstr-problem.hpp.

Collaboration diagram for UnconstrProblem< Conf >:

Public Member Functions
	UnconstrProblem (length_t n)
void	resize (length_t n)
	Change the number of decision variables.
	UnconstrProblem (const UnconstrProblem &)=default
UnconstrProblem &	operator= (const UnconstrProblem &)=default
	UnconstrProblem (UnconstrProblem &&) noexcept=default
UnconstrProblem &	operator= (UnconstrProblem &&) noexcept=default
length_t	get_n () const
	Number of decision variables, n.
length_t	get_m () const
	Number of constraints (always zero)
void	eval_g (crvec, rvec) const
	No-op, no constraints.
void	eval_grad_g_prod (crvec, crvec, rvec grad) const
	Constraint gradient is always zero.
void	eval_jac_g (crvec, rvec) const
	Constraint Jacobian is always empty.
void	eval_grad_gi (crvec, index_t, rvec grad_gi) const
	Constraint gradient is always zero.
real_t	eval_prox_grad_step (real_t γ, crvec x, crvec grad_ψ, rvec x̂, rvec p) const
	No proximal mapping, just a forward (gradient) step.
void	eval_proj_diff_g (crvec, rvec) const
void	eval_proj_multipliers (rvec, real_t) const
index_t	eval_inactive_indices_res_lna (real_t, crvec, crvec, rindexvec J) const

Public Attributes
length_t	n
	Number of decision variables, dimension of x.

Constructor & Destructor Documentation

UnconstrProblem() [1/3]

template<Config Conf>

UnconstrProblem ( length_t  n )

inline

Parameters

n	Number of decision variables

Definition at line 22 of file unconstr-problem.hpp.

UnconstrProblem() [2/3]

template<Config Conf>

UnconstrProblem ( const UnconstrProblem< Conf > &  )

default

UnconstrProblem() [3/3]

template<Config Conf>

UnconstrProblem ( UnconstrProblem< Conf > &&  )

defaultnoexcept

Member Function Documentation

resize()

template<Config Conf>

void resize ( length_t  n )

inline

Change the number of decision variables.

Definition at line 25 of file unconstr-problem.hpp.

operator=() [1/2]

template<Config Conf>

UnconstrProblem & operator= ( const UnconstrProblem< Conf > &  )

default

operator=() [2/2]

template<Config Conf>

UnconstrProblem & operator= ( UnconstrProblem< Conf > &&  )

defaultnoexcept

get_n()

template<Config Conf>

length_t get_n ( ) const

inline

Number of decision variables, n.

Definition at line 33 of file unconstr-problem.hpp.

get_m()

template<Config Conf>

length_t get_m ( ) const

inline

Number of constraints (always zero)

Definition at line 35 of file unconstr-problem.hpp.

eval_g()

template<Config Conf>

void eval_g ( crvec  , rvec    ) const

inline

No-op, no constraints.

See also

TypeErasedProblem::eval_g

Definition at line 39 of file unconstr-problem.hpp.

eval_grad_g_prod()

template<Config Conf>

void eval_grad_g_prod ( crvec  , crvec  , rvec  grad  ) const

inline

Constraint gradient is always zero.

See also

TypeErasedProblem::eval_grad_g_prod

Definition at line 42 of file unconstr-problem.hpp.

eval_jac_g()

template<Config Conf>

void eval_jac_g ( crvec  , rvec    ) const

inline

Constraint Jacobian is always empty.

See also

TypeErasedProblem::eval_jac_g

Definition at line 45 of file unconstr-problem.hpp.

eval_grad_gi()

template<Config Conf>

void eval_grad_gi ( crvec  , index_t  , rvec  grad_gi  ) const

inline

Constraint gradient is always zero.

See also

TypeErasedProblem::eval_grad_gi

Definition at line 48 of file unconstr-problem.hpp.

eval_prox_grad_step()

template<Config Conf>

real_t eval_prox_grad_step ( real_t  γ, crvec  x, crvec  grad_ψ, rvec  x̂, rvec  p  ) const

inline

No proximal mapping, just a forward (gradient) step.

See also

TypeErasedProblem::eval_prox_grad_step

Definition at line 52 of file unconstr-problem.hpp.

eval_proj_diff_g()

template<Config Conf>

void eval_proj_diff_g ( crvec  , rvec    ) const

inline

See also

TypeErasedProblem::eval_proj_diff_g

Definition at line 59 of file unconstr-problem.hpp.

eval_proj_multipliers()

template<Config Conf>

void eval_proj_multipliers ( rvec  , real_t    ) const

inline

See also

TypeErasedProblem::eval_proj_multipliers

Definition at line 62 of file unconstr-problem.hpp.

eval_inactive_indices_res_lna()

template<Config Conf>

index_t eval_inactive_indices_res_lna ( real_t  , crvec  , crvec  , rindexvec  J  ) const

inline

See also

TypeErasedProblem::eval_inactive_indices_res_lna

Definition at line 65 of file unconstr-problem.hpp.

Member Data Documentation

n

template<Config Conf>

length_t n

Number of decision variables, dimension of x.

Definition at line 19 of file unconstr-problem.hpp.

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

• src/alpaqa/include/alpaqa/problem/unconstr-problem.hpp