[−][src]Struct argmin::solver::linesearch::backtracking::BacktrackingLineSearch
The Backtracking line search is a simple method to find a step length which obeys the Armijo (sufficient decrease) condition.
Example
References:
[0] Jorge Nocedal and Stephen J. Wright (2006). Numerical Optimization. Springer. ISBN 0-387-30303-0.
[1] Wikipedia: https://en.wikipedia.org/wiki/Backtracking_line_search
Methods
impl<P: Default, L> BacktrackingLineSearch<P, L>
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pub fn new(condition: L) -> Self
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Constructor
pub fn rho(self, rho: f64) -> Result<Self, Error>
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Set rho
Trait Implementations
impl<P: Clone, L: Clone> Clone for BacktrackingLineSearch<P, L>
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fn clone(&self) -> BacktrackingLineSearch<P, L>
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl<O, P, L> Solver<O> for BacktrackingLineSearch<P, L> where
P: Clone + Default + Serialize + DeserializeOwned + ArgminSub<P, P> + ArgminDot<P, f64> + ArgminScaledAdd<P, f64, P>,
O: ArgminOp<Param = P, Output = f64>,
L: LineSearchCondition<P>,
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P: Clone + Default + Serialize + DeserializeOwned + ArgminSub<P, P> + ArgminDot<P, f64> + ArgminScaledAdd<P, f64, P>,
O: ArgminOp<Param = P, Output = f64>,
L: LineSearchCondition<P>,
const NAME: &'static str
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fn init(
&mut self,
op: &mut OpWrapper<O>,
state: &IterState<O>
) -> Result<Option<ArgminIterData<O>>, Error>
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&mut self,
op: &mut OpWrapper<O>,
state: &IterState<O>
) -> Result<Option<ArgminIterData<O>>, Error>
fn next_iter(
&mut self,
op: &mut OpWrapper<O>,
_state: &IterState<O>
) -> Result<ArgminIterData<O>, Error>
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&mut self,
op: &mut OpWrapper<O>,
_state: &IterState<O>
) -> Result<ArgminIterData<O>, Error>
fn terminate(&mut self, state: &IterState<O>) -> TerminationReason
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fn terminate_internal(&mut self, state: &IterState<O>) -> TerminationReason
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Checks whether basic termination reasons apply. Read more
impl<'de, P, L> Deserialize<'de> for BacktrackingLineSearch<P, L> where
P: Deserialize<'de>,
L: Deserialize<'de>,
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P: Deserialize<'de>,
L: Deserialize<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
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__D: Deserializer<'de>,
impl<P, L> Serialize for BacktrackingLineSearch<P, L> where
P: Serialize,
L: Serialize,
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P: Serialize,
L: Serialize,
fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
__S: Serializer,
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__S: Serializer,
impl<P, L> ArgminLineSearch<P> for BacktrackingLineSearch<P, L> where
P: Clone + Serialize + ArgminSub<P, P> + ArgminDot<P, f64> + ArgminScaledAdd<P, f64, P>,
L: LineSearchCondition<P>,
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P: Clone + Serialize + ArgminSub<P, P> + ArgminDot<P, f64> + ArgminScaledAdd<P, f64, P>,
L: LineSearchCondition<P>,
fn set_search_direction(&mut self, search_direction: P)
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Set search direction
fn set_init_alpha(&mut self, alpha: f64) -> Result<(), Error>
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Set initial alpha value
Auto Trait Implementations
impl<P, L> Send for BacktrackingLineSearch<P, L> where
L: Send,
P: Send,
L: Send,
P: Send,
impl<P, L> Sync for BacktrackingLineSearch<P, L> where
L: Sync,
P: Sync,
L: Sync,
P: Sync,
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
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T: Deserialize<'de>,
impl<T> SendSyncUnwindSafe for T where
T: Send + Sync + UnwindSafe + ?Sized,
T: Send + Sync + UnwindSafe + ?Sized,