The Wayback Machine - https://web.archive.org/web/20170629111105/http://ja.cppreference.com/w/cpp/numeric/random/piecewise_linear_distribution
名前空間
変種
    操作

      std::piecewise_linear_distribution

      提供: cppreference.com
      < cpp‎ | numeric‎ | random

      このページは、Google 翻訳を使って英語版から機械翻訳されました。

      翻訳には誤りや奇妙な言い回しがあるかもしれません。文章の上にポインタをおくと、元の文章が見れます。誤りを修正して翻訳を改善する手助けをしてください。翻訳についての説明は、ここをクリックしてください。

      このページの英語版を見るにはここをクリックしてください

       
      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::piecewise_linear_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.
      piecewise_linear_distribution::piecewise_linear_distribution
      piecewise_linear_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.
      piecewise_linear_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.
      piecewise_linear_distribution::param
      piecewise_linear_distribution::min
      piecewise_linear_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 RealType =double>
      class piecewise_linear_distribution;
      		(C++11およびそれ以降)

      std::piecewise_linear_distribution produces random floating-point numbers, which are distributed according to a linear probability density function within each of the several subintervals [b
      i      , b
      i+1      )      . The distribution is such that the probability density at each interval boundary is exactly the predefined value p
      i      .

      The probability density for any b
      i      ≤x<b
      i+1       is p
      i
      b
      i+1      -x
      b
      i+1      -b
      i
       + p
      i+1
      x-b
      i
      b
      i+1      -b
      i
      , where probability densities at interval boundaries p
      k       are calculated as w
      k      /S       where S is the sum of all None
      1
      2
      (w
      k      +w
      k+1      )(b
      k+1      −b
      k      )      .

      The set of interval boundaries b
      i       and the set of weights at boundaries w
      i       are the parameters of this distribution.

      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_typeRealType
      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.
      区間の境界のリストを取得します
      Original:
      obtains the list of interval boundaries
      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]
      区間の境界での確率密度のリストを取得します
      Original:
      obtains the list of probability densities at interval boundaries
      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.

      (関数)[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.

      (関数)[edit]

      [編集]例

      このコードを実行します
      #include <iostream>#include <iomanip>#include <string>#include <map>#include <random>   int main(){ std::random_device rd;std::mt19937 gen(rd());// increase the probability from 0 to 5// remain flat from 5 to 10// decrease from 10 to 15 at the same ratestd::vector<double> i{0, 5, 10, 15};std::vector<double> w{0, 1, 1, 0}; std::piecewise_linear_distribution<> d(i.begin(), i.end(), w.begin());   std::map<int, int> hist;for(int n=0; n<10000;++n){++hist[d(gen)];}for(auto p : hist){std::cout<<std::setw(2)<< p.first<<' '<<std::string(p.second/100, }}

      出力: 

      0 * 1 *** 2 **** 3 ****** 4 ********* 5 ********* 6 ********* 7 ********** 8 ********* 9 ********** 10 ********* 11 ******* 12 **** 13 *** 14 *
      「http://ja.cppreference.com/mwiki/index.php?title=cpp/numeric/random/piecewise_linear_distribution&oldid=27670」から取得
      close