Struct AliasTable

Source

pub struct AliasTable {
    pub prob: Vec<f32>,
    pub alias: Vec<u32>,
    pub sum_w: f64,
}

Expand description

離散分布を O(1) でサンプリングする Alias Table

Fields§

§prob: Vec<f32>§alias: Vec<u32>§sum_w: f64

Implementations§

Source §

impl AliasTable

Source

pub fn new(weights: &[f32]) -> Self

重み配列から AliasTable を構築する weights[i] >= 0 を想定

Source

pub fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> usize

1 サンプル取得（添字を返す）

Auto Trait Implementations§

§

impl UnwindSafe for AliasTable

Blanket Implementations§

Source §

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

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

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

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §