NewtonTRDirection< Conf > Struct Template Reference

#include <alpaqa/inner/directions/pantr/newton-tr.hpp>

Detailed Description

template<Config Conf>
struct alpaqa::NewtonTRDirection< Conf >

Definition at line 36 of file newton-tr.hpp.

Collaboration diagram for NewtonTRDirection< Conf >:

Classes
struct	Params

Public Types
using	Problem = TypeErasedProblem< config_t >
using	AcceleratorParams = SteihaugCGParams< config_t >
using	DirectionParams = NewtonTRDirectionParams< config_t >

Public Member Functions
	NewtonTRDirection ()=default
	NewtonTRDirection (const Params &params)
	NewtonTRDirection (const AcceleratorParams &params, const DirectionParams &directionparams={})
void	initialize (const Problem &problem, crvec y, crvec Σ, real_t γ_0, crvec x_0, crvec x̂_0, crvec p_0, crvec grad_ψx_0)
bool	has_initial_direction () const
bool	update (real_t γₖ, real_t γₙₑₓₜ, crvec xₖ, crvec xₙₑₓₜ, crvec pₖ, crvec pₙₑₓₜ, crvec grad_ψxₖ, crvec grad_ψxₙₑₓₜ)
real_t	apply (real_t γₖ, crvec xₖ, crvec x̂ₖ, crvec pₖ, crvec grad_ψxₖ, real_t radius, rvec qₖ) const
void	changed_γ (real_t γₖ, real_t old_γₖ)
void	reset ()
std::string	get_name () const
auto	get_params () const

Public Attributes
SteihaugCG< config_t >	steihaug
DirectionParams	direction_params
const Problem *	problem = nullptr
std::optional< crvec >	y = std::nullopt
std::optional< crvec >	Σ = std::nullopt
indexvec	JK_sto
vec	rJ_sto
vec	qJ_sto
vec	work
vec	work_2
vec	work_n_fd
vec	work_m_fd

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Class Documentation

alpaqa::NewtonTRDirection::Params

struct alpaqa::NewtonTRDirection::Params

Collaboration diagram for NewtonTRDirection< Conf >::Params:

Class Members
AcceleratorParams	accelerator = {}
DirectionParams	direction = {}

Member Typedef Documentation

Problem

template<Config Conf>

using Problem = TypeErasedProblem<config_t>

Definition at line 39 of file newton-tr.hpp.

AcceleratorParams

template<Config Conf>

using AcceleratorParams = SteihaugCGParams<config_t>

Definition at line 40 of file newton-tr.hpp.

DirectionParams

template<Config Conf>

using DirectionParams = NewtonTRDirectionParams<config_t>

Definition at line 41 of file newton-tr.hpp.

Constructor & Destructor Documentation

NewtonTRDirection() [1/3]

template<Config Conf>

NewtonTRDirection ( )

default

NewtonTRDirection() [2/3]

template<Config Conf>

NewtonTRDirection ( const Params &  params )

inline

Definition at line 49 of file newton-tr.hpp.

NewtonTRDirection() [3/3]

template<Config Conf>

NewtonTRDirection ( const AcceleratorParams &  params, const DirectionParams &  directionparams = {}  )

inline

Definition at line 51 of file newton-tr.hpp.

Member Function Documentation

initialize()

template<Config Conf>

void initialize ( const Problem &  problem, crvec  y, crvec  Σ, real_t  γ_0, crvec  x_0, crvec  x̂_0, crvec  p_0, crvec  grad_ψx_0  )

inline

See also

PANTRDirection::initialize

Definition at line 56 of file newton-tr.hpp.

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has_initial_direction()

template<Config Conf>

bool has_initial_direction ( ) const

inline

See also

PANTRDirection::has_initial_direction

Definition at line 89 of file newton-tr.hpp.

update()

template<Config Conf>

bool update ( real_t  γₖ, real_t  γₙₑₓₜ, crvec  xₖ, crvec  xₙₑₓₜ, crvec  pₖ, crvec  pₙₑₓₜ, crvec  grad_ψxₖ, crvec  grad_ψxₙₑₓₜ  )

inline

See also

PANTRDirection::update

Definition at line 92 of file newton-tr.hpp.

apply()

template<Config Conf>

real_t apply ( real_t  γₖ, crvec  xₖ, crvec  x̂ₖ, crvec  pₖ, crvec  grad_ψxₖ, real_t  radius, rvec  qₖ  ) const

inline

See also

PANTRDirection::apply

TODO: use a better rule to determine the step size

TODO: use a better rule to determine the step size

Definition at line 101 of file newton-tr.hpp.

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changed_γ()

template<Config Conf>

void changed_γ ( real_t  γₖ, real_t  old_γₖ  )

inline

See also

PANTRDirection::changed_γ

Definition at line 170 of file newton-tr.hpp.

reset()

template<Config Conf>

void reset ( )

inline

See also

PANTRDirection::reset

Definition at line 174 of file newton-tr.hpp.

get_name()

template<Config Conf>

std::string get_name ( ) const

inline

See also

PANTRDirection::get_name

Definition at line 177 of file newton-tr.hpp.

get_params()

template<Config Conf>

auto get_params ( ) const

inline

Definition at line 181 of file newton-tr.hpp.

Member Data Documentation

steihaug

template<Config Conf>

SteihaugCG<config_t> steihaug

Definition at line 185 of file newton-tr.hpp.

direction_params

template<Config Conf>

DirectionParams direction_params

Definition at line 186 of file newton-tr.hpp.

problem

template<Config Conf>

const Problem* problem = nullptr

Definition at line 187 of file newton-tr.hpp.

y

template<Config Conf>

std::optional<crvec> y = std::nullopt

Definition at line 189 of file newton-tr.hpp.

Σ

template<Config Conf>

std::optional<crvec> Σ = std::nullopt

Definition at line 190 of file newton-tr.hpp.

JK_sto

template<Config Conf>

indexvec JK_sto

mutable

Definition at line 195 of file newton-tr.hpp.

rJ_sto

template<Config Conf>

vec rJ_sto

mutable

Definition at line 196 of file newton-tr.hpp.

qJ_sto

template<Config Conf>

vec qJ_sto

mutable

Definition at line 197 of file newton-tr.hpp.

work

template<Config Conf>

vec work

mutable

Definition at line 198 of file newton-tr.hpp.

work_2

template<Config Conf>

vec work_2

Definition at line 198 of file newton-tr.hpp.

work_n_fd

template<Config Conf>

vec work_n_fd

Definition at line 198 of file newton-tr.hpp.

work_m_fd

template<Config Conf>

vec work_m_fd

Definition at line 198 of file newton-tr.hpp.

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

• src/alpaqa/include/alpaqa/inner/directions/pantr/newton-tr.hpp