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StrategyConfig

spectrafit_levenberg_marquardt

Struct StrategyConfig 

Source 
pub struct StrategyConfig {
    pub kind: StepKind,
    pub ftol: f64,
    pub xtol: f64,
    pub gtol: f64,
    pub max_nfev: usize,
    pub initial_lambda: f64,
    pub geodesic: bool,
    pub geodesic_h: f64,
    pub geodesic_alpha: f64,
    pub bound_scaling: bool,
}
Expand description

Tuning for a single Levenberg–Marquardt solve (covers LM, TRF and geodesic).

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§kind: StepKind

Linear-algebra path for the step (pick via crate::select_regime).

§ftol: f64

Relative cost-decrease tolerance.

§xtol: f64

Relative step-size tolerance.

§gtol: f64

Gradient infinity-norm tolerance.

§max_nfev: usize

Maximum residual evaluations.

§initial_lambda: f64

Initial Marquardt damping λ.

§geodesic: bool

Enable geodesic acceleration (Transtrum): augment the LM velocity step with a second-directional-derivative acceleration term. Faster on sloppy/degenerate surfaces (multi-peak) at ~1 extra residual eval/iter.

§geodesic_h: f64

Finite-difference step for the geodesic second directional derivative.

§geodesic_alpha: f64

Acceptance threshold for the acceleration: accept δ + ½a only when ‖Da‖ / ‖Dδ‖ ≤ α (mild curvature).

§bound_scaling: bool

Enable Coleman–Li bound scaling (Trust-Region-Reflective): fold the problem’s trust_scaling into the per-iteration damping so steps shrink as parameters approach active bounds.

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impl Clone for StrategyConfig

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fn clone(&self) -> StrategyConfig

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for StrategyConfig

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impl Debug for StrategyConfig

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

Formats the value using the given formatter. Read more
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impl Default for StrategyConfig

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fn default() -> Self

Returns the “default value” for a type. Read more

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