package urn

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package urn

urn
- README
- Library urn
  - Urn
    
    WeightType
    
    U
    
    Make
    
    IntWeight
    
    FloatWeight
- Sources
  - urn
    
    almostPerfect.ml
    
    urn.ml
    
    urn__.ml

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Module `Urn.IntWeight`Source

A module for int weights using Random.int to sample random integers.

Sourcetype t = int

The type of weights.

Sourceval compare : t -> t -> int

A total ordering function over weights. compare x y should return zero if the weights x and y are equal, compare x y should be negative if x is less than y, and compare x y should be positive if x is greater than y.

Sourceval zero : t

Weight zero value. It should be the case that forall x, add x zero = x.

Sourceval add : t -> t -> t

Weight addition. Should be commutative, associative, etc.

Sourceval sub : t -> t -> t

Weight subtraction. It should be the inverse of add, i.e. forall x and y, sub (add x y) y equals x.

Sourceval sample : t -> t

Weight sampling function. sample w should produce a value uniformly chosen between zero (inclusive) and w (exclusive). Example: Random.int is a suitable sampling function for integer weights.

package urn

Module Urn.IntWeightSource

Module `Urn.IntWeight`Source