Struct GammaPosterior 

pub struct GammaPosterior {
    pub shape: f64,
    pub rate: f64,
}

Gamma distribution posterior for positive rate parameters (e.g., temperature)

Fields

shape: f64

Shape parameter (α)

rate: f64

Rate parameter (β)

Implementations

impl GammaPosterior

pub fn vague() -> Self

Create with vague prior

pub fn new(shape: f64, rate: f64) -> Self

Create with custom prior

pub fn observe(&mut self, value: f64)

Update with an observation (conjugate update for exponential likelihood)

pub fn mean(&self) -> f64

Posterior mean

pub fn mode(&self) -> Option<f64>

Posterior mode (for shape > 1)

pub fn variance(&self) -> f64

Posterior variance

pub fn sample<R: Rng>(&self, rng: &mut R) -> f64

Sample from the posterior

pub fn decay(&mut self, factor: f64)

Apply decay

Trait Implementations

impl Clone for GammaPosterior

fn clone(&self) -> GammaPosterior

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GammaPosterior

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

Formats the value using the given formatter.

impl Default for GammaPosterior

fn default() -> Self

Returns the “default value” for a type.