Crate distr_combinators 

Combinators for rand::distr::Distribution objects

This module provides tools to compose and transform probability distributions in a functional style. It is designed to be generic and independent of any specific data structures.

Re-exports

pub use histogram::Histogram;

Modules

histogram

A convenience to analyze the distribution of generated values

Structs

Categorical

A categorical distribution that selects from elements based on an index distribution ed.

Choice2

A distribution that chooses between dx and dy based on a boolean distribution db.

Collected

A distribution that samples from d, maps using pf, and retries if pf returns None.

Concentrated

A stateful distribution that accumulates samples from dx into state z until fa returns a value.

Degenerate

A constant distribution that always returns element.

Dependent2

A distribution where the choice of the second distribution depends on the value sampled from the first.

Diluted

A distribution that expands a single sample from dx into a sequence of values.

Filtered

A distribution that samples from d but rejects values that do not satisfy predicate p.

Mapped

A distribution that maps values sampled from d using function f.

Product2

A distribution that combines two independent distributions dx and dy using a function f.

Repeated

A distribution that generates a vector of items with length sampled from lengthd and items from itemd.

Sentinel

A distribution that generates a vector of bytes by sampling from mbd until None is returned.

Functions

ratios

Creates a categorical distribution where elements are chosen with probability proportional to their weights.