# Random

final class Random<Value> < Expression<Value>(nil)

Random variate.

• Value: Value type.

Random objects, like all Expression objects, are stateful. Random objects in the pilot state are considered variables, meaning that a call to grad() will compute gradients with respect to them, and a further call to move() will apply a Markov kernel to update their value. Random objects in the value state are considered constants.

### Assignments

Name Description
Value Value assignment.
Value? Optional assignment.

### Member Variables

Name Description
p:Distribution<Value>? Associated distribution.

### Member Functions

Name Description
hasDistribution Does this have a distribution?
getDistribution Get the distribution.
assume Assume the distribution for the random variate.

### Member Function Details

#### assume

function assume(p:Distribution<Value>)

Assume the distribution for the random variate. When a value for the random variate is required, it will be simulated from this distribution and trigger an update on the delayed sampling graph.

• p: The distribution.

#### getDistribution

function getDistribution() -> Distribution<Value>

Get the distribution.

#### hasDistribution

function hasDistribution() -> Boolean

Does this have a distribution?