Struct IterationStats

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pub struct IterationStats {
    pub iteration: usize,
    pub cost: f64,
    pub cost_change: f64,
    pub gradient_norm: f64,
    pub step_norm: f64,
    pub tr_ratio: f64,
    pub tr_radius: f64,
    pub ls_iter: usize,
    pub iter_time_ms: f64,
    pub total_time_ms: f64,
    pub accepted: bool,
}

Expand description

Per-iteration statistics for detailed logging (Ceres-style output).

Captures all relevant metrics for each optimization iteration, enabling detailed analysis and debugging of the optimization process.

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§iteration: usize

Iteration number (0-indexed)

§cost: f64

Cost function value at this iteration

§cost_change: f64

Change in cost from previous iteration

§gradient_norm: f64

L2 norm of the gradient (||J^T·r||)

§step_norm: f64

L2 norm of the parameter update step (||Δx||)

§tr_ratio: f64

Trust region ratio (ρ = actual_reduction / predicted_reduction)

§tr_radius: f64

Trust region radius (Δ)

§ls_iter: usize

Linear solver iterations (0 for direct solvers like Cholesky)

§iter_time_ms: f64

Time taken for this iteration in milliseconds

§total_time_ms: f64

Total elapsed time since optimization started in milliseconds

§accepted: bool

Whether the step was accepted (true) or rejected (false)

Implementations§

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impl IterationStats

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pub fn print_header()

Print table header in Ceres-style format

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pub fn print_line(&self)

Print single iteration line in Ceres-style format with scientific notation

Trait Implementations§

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impl Clone for IterationStats

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fn clone(&self) -> IterationStats

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for IterationStats

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for IterationStats

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> ByRef<T> for T

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fn by_ref(&self) -> &T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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impl<T> DistributionExt for T
where T: ?Sized,

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fn rand<T>(&self, rng: &mut (impl Rng + ?Sized)) -> T
where Self: Distribution<T>,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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