名前空間
変種
操作

std::geometric_distribution

提供：cppreference.com

This page has been machine-translated from the English version of the wiki using Google Translate.

The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

Click here for the English version of this page

 
C++
 
ニューメリックスライブラリ
一般的な数学関数
浮動小数点環境
複素数
数値配列
擬似乱数生成
コンパイル時有理数演算 (C++11)
汎用の数値演算
Original:
Generic numeric operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
擬似乱数生成
エンジンとエンジンアダプタ
Original:
Engines and engine adaptors
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
linear_congruential_engine(C++11)
mersenne_twister_engine(C++11)
subtract_with_carry_engine(C++11)
discard_block_engine(C++11)
independent_bits_engine(C++11)
shuffle_order_engine(C++11)
ジェネレータ
Original:
Generators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
random_device(C++11)
ディストリビューション
Original:
Distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
一様分布
Original:
Uniform distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
uniform_int_distribution(C++11)
uniform_real_distribution(C++11)
generate_canonical(C++11)
ベルヌーイ分布
Original:
Bernoulli distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
bernoulli_distribution(C++11)
binomial_distribution(C++11)
negative_binomial_distribution(C++11)
geometric_distribution(C++11)
ポアソン分布
Original:
Poisson distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
poisson_distribution(C++11)
exponential_distribution(C++11)
gamma_distribution(C++11)
weibull_distribution(C++11)
extreme_value_distribution(C++11)
正規分布
Original:
Normal distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
normal_distribution(C++11)
lognormal_distribution(C++11)
chi_squared_distribution(C++11)
cauchy_distribution(C++11)
fisher_f_distribution(C++11)
student_t_distribution(C++11)
サンプリング分布
Original:
Sampling distributions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
discrete_distribution(C++11)
piecewise_constant_distribution(C++11)
piecewise_linear_distribution(C++11)
シードシーケンス
Original:
Seed Sequences
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
seed_seq(C++11)
Cライブラリ
Original:
C library
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rand
srand
RAND_MAX
 
std::geometric_distribution
メンバ関数
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.
geometric_distribution::geometric_distribution
geometric_distribution::reset
世代
Original:
Generation
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
geometric_distribution::operator()
特性
Original:
Characteristics
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
geometric_distribution::p
geometric_distribution::param
geometric_distribution::min
geometric_distribution::max
非メンバ関数
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>>
 
Defined in header <random>
template< class IntType = int >
class geometric_distribution;
 (C + + 11以来)
ランダムな正の整数値i、離散確率関数に従って分布を生成します
Original:
Produces random non-negative integer values i, distributed according to discrete probability function:
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
P(i|p) = p · (1 − p)i
値はyes /シングルの成功を得るために必要であるなしの試験（各確率pで成功）の数を表します.
Original:
The value represents the number of yes/no trials (each succeeding with probability p) which are necessary to obtain a single success.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
std::geometric_distribution<>(p)std::negative_binomial_distribution<>(1, p)とまったく同じです。またstd::exponential_distributionの離散的な対応です.
Original:
std::geometric_distribution<>(p) is exactly equivalent to std::negative_binomial_distribution<>(1, p). It is also the discrete counterpart of std::exponential_distribution.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

目次

[編集] メンバータイプ

メンバー·タイプ
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
不特定のパラメータセットのタイプ
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.

[編集] メンバ関数
新しいディストリビューションを構築します
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.

(パブリックメンバ関数) [edit]
リセットさ分布の内部状態
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.

(パブリックメンバ関数) [edit]
世代
Original:
Generation
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ディストリビューションの次の乱数を生成します
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.

(パブリックメンバ関数) [edit]
特性
Original:
Characteristics
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
pの分布パラメータ（trueを生成する試験の確率）を返します
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.

(パブリックメンバ関数) [edit]
分布パラメータオブジェクトを取得または設定します
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.

(パブリックメンバ関数) [edit]
最小潜在的に生成された値を返します
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.

(パブリックメンバ関数) [edit]
最大潜在的に生成された値を返します
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.

(パブリックメンバ関数) [edit]

[編集] 非メンバ関数
2つのディストリビューションオブジェクトを比較します
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.

(機能) [edit]
擬似乱数分布にストリーム入出力を行います
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.

(機能) [edit]

[編集] 例

geometric_distribution <>（0.5）がデフォルトで、頭を取得するために必要なコイン投げの数を表します
Original:
geometric_distribution<>(0.5) is the default and represents the number of coin tosses that are required to get heads
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <iostream>
#include <iomanip>
#include <string>
#include <map>
#include <random>
int main()
{
    std::random_device rd;
    std::mt19937 gen(rd());
 
    std::geometric_distribution<> d; // same as std::negative_binomial_distribution<> d(1, 0.5);
 
    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

[編集] 外部リンク

Weisstein, Eric W. "Geometric Distribution."MathWorldのから - WolframのWebリソース.
Original:
Weisstein, Eric W. "Geometric Distribution." From MathWorld--A Wolfram Web Resource.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
「http://ja.cppreference.com/mwiki/index.php?title=cpp/numeric/random/geometric_distribution&oldid=19770」より作成