theorem

Documentation

Overview

Package theorem is an Bayes' theorem implementation.

Index

• func Bayes(PriorPtoB, PriorPfromAtoB, PriorPNotFromAtoB float64) float64

Examples

• Bayes

Functions

func Bayes

func Bayes(PriorPtoB, PriorPfromAtoB, PriorPNotFromAtoB float64) float64

Bayes returns the probability from the given probability based on Bayes' theorem.

Example

package main

import (
	"fmt"

	"github.com/KEINOS/go-bayes/pkg/theorem"
)

func main() {
	// Validation of figures
	// Bayes' theorem
	x := 0.3 * 0.4
	y := x + (1.-0.3)*0.5
	expect := x / y

	// Prior probability to be B.
	PriorProbToB := 0.3
	// Prior probability to be B if the previous was A.
	PriorProbFromAtoB := 0.4
	// Prior probability not to be B if the previous was A.
	PriorProbNotFromAtoB := 0.5

	actual := theorem.Bayes(PriorProbToB, PriorProbFromAtoB, PriorProbNotFromAtoB)

	if expect == actual {
		fmt.Println("OK")
	}

}

Output:

OK