Struct SmoothPositiveResult 

#[non_exhaustive]
pub struct SmoothPositiveResult {
    pub fitted: FdMatrix,
    pub log_coefficients: FdMatrix,
    pub edf: f64,
    pub gcv: f64,
}

Result of log-domain positive smoothing.

The fitted values are guaranteed strictly positive (> 0) for any strictly-positive input, because they are obtained by exponentiating the log-domain B-spline smooth.

Bias caveat

This is a log-transform smoother: it minimises squared error in log space (‖log(y) − Φc‖²), not in the original scale. The back-transformed values exp(Φ̂c) are therefore not the minimum-MSE estimate of E[y | t] — they tend to underestimate the conditional mean by a Jensen’s-inequality correction. For an approximately unbiased estimate in the original scale apply exp(fitted + σ² / 2) where σ² is the conditional variance of the log-transformed fit (e.g. from the GCV score). The correction is intentionally left to the caller in v1.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

fitted: FdMatrix

Fitted values in the original (positive) scale (n × m, all entries > 0).

log_coefficients: FdMatrix

B-spline coefficients from the log-domain smooth (n × K).

edf: f64

Effective degrees of freedom of the log-domain fit.

gcv: f64

GCV score of the log-domain fit.

Trait Implementations

impl Clone for SmoothPositiveResult

fn clone(&self) -> SmoothPositiveResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SmoothPositiveResult

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

Formats the value using the given formatter.

impl PartialEq for SmoothPositiveResult

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SmoothPositiveResult