BisquareLoss

scirs2_optimize::least_squares::robust

Struct BisquareLoss 

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pub struct BisquareLoss { /* private fields */ }
Expand description

Bisquare (Tukey) loss function

The bisquare loss function provides strong protection against outliers by completely rejecting residuals beyond a certain threshold.

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impl BisquareLoss

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pub fn new(c: f64) -> Self

Create a new Bisquare loss with the specified tuning constant

The c parameter determines the rejection threshold. Typically set to 4.685 for 95% asymptotic efficiency.

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impl Clone for BisquareLoss

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fn clone(&self) -> BisquareLoss

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 BisquareLoss

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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 RobustLoss for BisquareLoss

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fn loss(&self, r: f64) -> f64

Compute the loss value for a residual
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fn weight(&self, r: f64) -> f64

Compute the weight (psi function derivative) for a residual Weight = psi(r) / r where psi is the derivative of the loss
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fn weight_derivative(&self, r: f64) -> f64

Compute the derivative of the weight function (for Hessian computation)

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

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Gets the TypeId of self. Read more
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Calls U::from(self).

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

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The alignment of pointer.
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type Init = T

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type Error = Infallible

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