std::negative_binomial_distribution

 

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std::negative_binomial_distribution

Membri funzioni Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

negative_binomial_distribution::negative_binomial_distribution

negative_binomial_distribution::reset

Generazione Original: Generation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

negative_binomial_distribution::operator()

Caratteristiche Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

negative_binomial_distribution::p

negative_binomial_distribution::k

negative_binomial_distribution::param

negative_binomial_distribution::min

negative_binomial_distribution::max

Non membri funzioni Original: Non-member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

operator== operator!=

operator<< operator>>

 

Elemento definito nell'header <random>
template<class IntType =int> class negative_binomial_distribution;		(dal C++11)

Produce casuale non negativo i valori interi, distribuito in base alla funzione di probabilità discrete:

Original:

Produces random non-negative integer values i, distributed according to discrete probability function:

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P(i|k,p) =⎛
⎜
⎝k + i − 1
i⎞
⎟
⎠ · pk
· (1 − p)i

Il valore rappresenta il numero di errori in una serie di indipendenti sì / no prove (ognuna riesce con p probabilità), prima di essere esattamente successi k.

Original:

The value represents the number of failures in a series of independent yes/no trials (each succeeds with probability p), before exactly k successes occur.

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Membri tipi

Membro tipo Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
result_type	IntType
param_type	il tipo di set di parametri, non specificato Original: the type of the parameter set, unspecified The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Membri funzioni

(costruttore)	costruisce nuova distribuzione Original: constructs new distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
reset	ripristina lo stato interno della distribuzione Original: resets the internal state of the distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
Generazione Original: Generation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
operator()	genera il successivo numero casuale nella distribuzione Original: generates the next random number in the distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
Caratteristiche Original: Characteristics The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
k	restituisce la k parametro di distribuzione (numero di fallimenti di prova) Original: returns the k distribution parameter (number of trial failures) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
p	restituisce la distribuzione p parametro (probabilità di un true generatrice di prova) Original: returns the p distribution parameter (probability of a trial generating true) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
param	ottiene o imposta l'oggetto parametro di distribuzione Original: gets or sets the distribution parameter object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
min	restituisce il valore minimo potenzialmente generato Original: returns the minimum potentially generated value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)
max	restituisce il valore massimo potenzialmente generato Original: returns the maximum potentially generated value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (metodo pubblico)

Non membri funzioni

operator== operator!=	confronta due oggetti di distribuzione Original: compares two distribution objects The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
operator<< operator>>	esegue flusso di ingresso e di uscita sul pseudo-casuale distribuzione numerica Original: performs stream input and output on pseudo-random number distribution The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)

Esempio

#include <iostream>#include <iomanip>#include <string>#include <map>#include <random>   int main(){ std::random_device rd;std::mt19937 gen(rd());// Pat goes door-to-door selling cookies// At each house, there's a 75% chance that she sells one box// how many times will she be turned away before selling 5 boxes? std::negative_binomial_distribution<> d(5, 0.75);   std::map<int, int> hist;for(int n=0; n<10000;++n){++hist[d(gen)];}for(auto p : hist){std::cout<< p.first<<' '<<std::string(p.second/100, '*')<<'\n';}}

Output:

0 *********************** 1 ***************************** 2 ********************** 3 ************* 4 ****** 5 *** 6 * 7 8 9 10 11

Collegamenti esterni

Weisstein, Eric W. "Negative Binomial Distribution." Da MathWorld - Una risorsa Web Wolfram.

Original:

Weisstein, Eric W. "Negative Binomial Distribution." From MathWorld--A Wolfram Web Resource.

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