[−][src]Struct rand::distributions::Dirichlet
The dirichelet distribution Dirichlet(alpha)
.
The Dirichlet distribution is a family of continuous multivariate probability distributions parameterized by a vector alpha of positive reals. It is a multivariate generalization of the beta distribution.
Example
use rand::prelude::*; use rand::distributions::Dirichlet; let dirichlet = Dirichlet::new(vec![1.0, 2.0, 3.0]); let samples = dirichlet.sample(&mut rand::thread_rng()); println!("{:?} is from a Dirichlet([1.0, 2.0, 3.0]) distribution", samples);
Methods
impl Dirichlet
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pub fn new<V: Into<Vec<f64>>>(alpha: V) -> Dirichlet
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pub fn new_with_param(alpha: f64, size: usize) -> Dirichlet
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Construct a new Dirichlet
with the given shape parameter alpha
and size
.
Panics
- if
alpha <= 0.0
- if
size < 2
Trait Implementations
impl Distribution<Vec<f64>> for Dirichlet
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fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Vec<f64>
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ⓘImportant traits for DistIter<'a, D, R, T>fn sample_iter<'a, R>(&'a self, rng: &'a mut R) -> DistIter<'a, Self, R, T> where
Self: Sized,
R: Rng,
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ⓘImportant traits for DistIter<'a, D, R, T>
Self: Sized,
R: Rng,
impl Clone for Dirichlet
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impl Debug for Dirichlet
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Auto Trait Implementations
impl Send for Dirichlet
impl Unpin for Dirichlet
impl Sync for Dirichlet
impl UnwindSafe for Dirichlet
impl RefUnwindSafe for Dirichlet
Blanket Implementations
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,