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Leonardo/it.grypho.scala.leonardo/it.grypho.scala.leonardo.probability/_DistributionQuery

_DistributionQuery

it.grypho.scala.leonardo.probability._DistributionQuery
case class _DistributionQuery(query: Query, dist: _Expression, args: List[_Expression]) extends _Expression

A numeric question about a distribution: pdf, cdf, prob or quantile.

One node for all four rather than four nodes, for the same reason DistKind is one enum: they differ only in which kernel they call.

Why prob(d, lo, hi) and not P(X < 2). The grammar has no comparison operators — only = and ==, which build equations — so a predicate like X < 2 cannot be expressed. Adding < and > would be a change to the expression language, not to this domain. An interval is the honest shape available today.

Value parameters

args

the query's own arguments (one for pdf/cdf/quantile, two for prob)

dist

the distribution expression

query

the question

Attributes

Graph
Supertypes
trait Serializable
trait Product
trait Equals
trait _Expression
class Object
trait Matchable
class Any
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Members list

Value members

Concrete methods

override def children: List[_Expression]

Sub-expressions subject to recursive structural traversal. Binder positions (e.g. the differentiation variable) are excluded.

Sub-expressions subject to recursive structural traversal. Binder positions (e.g. the differentiation variable) are excluded.

Attributes

Definition Classes
override def eval(env: Environment): Either[_Expression, _Value]

Reduces this expression in the given environment.

Reduces this expression in the given environment.

Value parameters

env

variable bindings and display precision

Attributes

Returns

Right(v) when all free variables resolved to concrete values; Left(e) when reduction is partial or impossible

Definition Classes
override def rebuild(c: List[_Expression]): _Expression

Reconstructs the same node shape with replacement sub-expressions.

Reconstructs the same node shape with replacement sub-expressions.

Value parameters

newChildren

replacements in the same order and count as children

Attributes

Definition Classes
override def toString: String

Returns a string representation of the object.

Returns a string representation of the object.

The default representation is platform dependent.

Attributes

Returns

a string representation of the object.

Definition Classes
Any

Inherited methods

def productElementNames: Iterator[String]

Attributes

Inherited from:
Product
def productIterator: Iterator[Any]

Attributes

Inherited from:
Product

Inherited fields

lazy val freeVars: Set[String]

Cached set of free variable names; O(1) after the first access.

Cached set of free variable names; O(1) after the first access.

Attributes

Inherited from:
_Expression
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