KSLCore/ksl.modeling.supplychain.spec/RVSpec

RVSpec

@Serializable
sealed class RVSpec(source)

Serializable description of a random variable used in a NetworkSpec (an item lead time, a transport time, an inter-arrival time, a periodic review interval).

Pure data: an RVSpec carries no reference to a KSL RVariableIfc. ksl.modeling.supplychain.spec.SupplyChainBuilder materializes each spec into the corresponding KSL random variable with its stream number (D2). Keeping the spec free of runtime types lets a NetworkSpec be authored, serialized, diffed, and generated without a Model.

Stream numbers are explicit (a field on every stochastic variant) per the DSL plan §1 — reproducibility is the modeler's responsibility, and a saved spec must be deterministic. The Kotlin DSL (D4) adds an autoStream() allocator that materializes an assigned number into the spec.

v1 covers the variants the existing examples use (Constant, Exponential) plus a few common continuous distributions (Uniform, Triangular, Lognormal). Additional families are a mechanical follow-up: add a variant here and a branch in the builder's materializer.

Inheritors

Constructors

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protected constructor()

Types

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@Serializable
@SerialName(value = "constant")
data class Constant(val value: Double) : RVSpec

A deterministic constant value (no stream).

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@Serializable
@SerialName(value = "exponential")
data class Exponential(val mean: Double, val stream: Int) : RVSpec

Exponential with the given mean and stream number.

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@Serializable
@SerialName(value = "lognormal")
data class Lognormal(val mean: Double, val variance: Double, val stream: Int) : RVSpec

Lognormal with the given mean, variance and stream.

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@Serializable
@SerialName(value = "triangular")
data class Triangular(val min: Double, val mode: Double, val max: Double, val stream: Int) : RVSpec

Triangular with the given min, mode, max and stream.

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@Serializable
@SerialName(value = "uniform")
data class Uniform(val min: Double, val max: Double, val stream: Int) : RVSpec

Continuous uniform on [min, max] with the given stream.

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