Struct argmin::solver::trustregion::dogleg::Dogleg

pub struct Dogleg { /* fields omitted */ }

The Dogleg method computes the intersection of the trust region boundary with a path given by the unconstraind minimum along the steepest descent direction and the optimum of the quadratic approximation of the cost function at the current point.

References:

[0] Jorge Nocedal and Stephen J. Wright (2006). Numerical Optimization. Springer. ISBN 0-387-30303-0.

Methods

impl Dogleg

pub fn new() -> Self

Constructor

Trait Implementations

impl Clone for Dogleg

fn clone(&self) -> Dogleg

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Dogleg

impl Default for Dogleg

fn default() -> Dogleg

Returns the "default value" for a type.

impl PartialEq<Dogleg> for Dogleg

fn eq(&self, other: &Dogleg) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Dogleg) -> bool

This method tests for !=.

impl PartialOrd<Dogleg> for Dogleg

fn partial_cmp(&self, other: &Dogleg) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Dogleg) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Dogleg) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Dogleg) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Dogleg) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Debug for Dogleg

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<O> Solver<O> for Dogleg where
    O: ArgminOp<Output = f64>,
    O::Param: Debug + ArgminMul<f64, O::Param> + ArgminWeightedDot<O::Param, f64, O::Hessian> + ArgminNorm<f64> + ArgminDot<O::Param, f64> + ArgminAdd<O::Param, O::Param> + ArgminSub<O::Param, O::Param>,
    O::Hessian: ArgminInv<O::Hessian> + ArgminDot<O::Param, O::Param>, 

const NAME: &'static str

fn next_iter(
    &mut self,
    op: &mut OpWrapper<O>,
    state: &IterState<O>
) -> Result<ArgminIterData<O>, Error>

Computes one iteration of the algorithm.

fn terminate(&mut self, state: &IterState<O>) -> TerminationReason

Checks whether the algorithm must be terminated

fn init(
    &mut self,
    _op: &mut OpWrapper<O>,
    _state: &IterState<O>
) -> Result<Option<ArgminIterData<O>>, Error>

Initializes the algorithm

fn terminate_internal(&mut self, state: &IterState<O>) -> TerminationReason

Checks whether basic termination reasons apply.

impl<'de> Deserialize<'de> for Dogleg

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Serialize for Dogleg

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl ArgminTrustRegion for Dogleg

fn set_radius(&mut self, radius: f64)

Set the initial step length