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R语言 distr包 Pois-class()函数中文帮助文档(中英文对照)

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发表于 2012-9-16 21:59:20 | 显示全部楼层 |阅读模式
Pois-class(distr)
Pois-class()所属R语言包:distr

                                        Class "ois"
                                         类“波伊什”

                                         译者:生物统计家园网 机器人LoveR

描述----------Description----------

The Poisson distribution has density
泊松分布密度

p(x) = lambda^x exp(-lambda)/x!</i>
P(X)=拉姆达^ X(-λ)/ X!</ I>

C.f. rpois
参见rpois


类对象----------Objects from the Class----------

Objects can be created by calls of the form Pois(lambda). This object is a Poisson distribution.
可以创建对象通过调用的形式Pois(lambda)。这个对象是一个泊松分布。


插槽----------Slots----------

  


imgObject of class "Naturals": The space of the image of this distribution has got dimension 1 and the name "Natural Space".
img对象的类"Naturals":这个分布的图像的空间得到了维度1和“自然空间”的名称。

paramObject of class "oisParameter": the parameter of this distribution (lambda), declared at its instantiation
param类的对象"oisParameter":这个分布的参数(λ),在其实例的声明

rObject of class "function": generates random numbers (calls function rpois)
r类的对象"function":产生随机数(调用函数rpois)

dObject of class "function": density function (calls function dpois)
d对象之类"function":密度函数(调用函数dpois)

pObject of class "function": cumulative function (calls function ppois)
p类的对象"function":累计功能(调用函数ppois)

qObject of class "function": inverse of the cumulative function (calls function qpois). The quantile is defined as the smallest value x such that F(x) &ge; p, where F is the distribution function.
q类的对象"function":的累积函数的逆(调用函数qpois)。位数被定义为最小的值x等F(x) &ge; p,其中F是分布函数。

supportObject of class "numeric": a (sorted) vector containing the support of the discrete density function
support类的对象"numeric":(排序)向量的离散密度函数的支持

.withArithlogical: used internally to issue warnings as to  interpretation of arithmetics
.withArith逻辑:在内部使用发出警告的算术解释

.withSimlogical: used internally to issue warnings as to  accuracy
.withSim逻辑:在内部使用发出警告,准确性

.logExactlogical: used internally to flag the case where  there are explicit formulae for the log version of density, cdf, and  quantile function
.logExact逻辑:内部使用,用于标记的情况下有明确的公式的log版本的密度,民防部队和分位数函数

.lowerExactlogical: used internally to flag the case where  there are explicit formulae for the lower tail version of cdf and quantile  function
.lowerExact逻辑:在内部使用标记的情况下,下尾版本的累积分布函数和分位数的功能有明确的公式

Symmetryobject of class "DistributionSymmetry"; used internally to avoid unnecessary calculations.   
Symmetry类的对象"DistributionSymmetry";内部使用,以避免不必要的计算。


扩展----------Extends----------

Class "DiscreteDistribution", directly. Class "UnivariateDistribution", by class "DiscreteDistribution". Class "Distribution", by class "DiscreteDistribution".
类"DiscreteDistribution",直接。类"UnivariateDistribution",的类"DiscreteDistribution"的。类"Distribution",的类"DiscreteDistribution"的。


方法----------Methods----------

  


+signature(e1 = "ois", e2 = "ois"): For the Poisson distribution the exact convolution formula is implemented thereby improving the general numerical approximation.
+signature(e1 = "ois", e2 = "ois"):泊松分布的确切卷积公式来实现,从而改善总体的数值逼近。

initializesignature(.Object = "ois"): initialize method
初始化signature(.Object = "ois"):初始化方法

lambdasignature(object = "ois"): returns the slot lambda of the parameter of the distribution
拉姆达signature(object = "Pois"):返回的参数的分布的槽的lambda

lambda<-signature(object = "Pois"): modifies the slot lambda of the parameter of the distribution   
拉姆达< - signature(object = "Pois"):修改的参数的分布的槽的lambda


注意----------Note----------

Working with a computer, we use a finite interval as support which carries at least mass 1-getdistrOption("TruncQuantile").
一台电脑,我们用有限的时间间隔为支持至少进行质量1-getdistrOption("TruncQuantile")。


(作者)----------Author(s)----------



Thomas Stabla <a href="mailto:statho3@web.de">statho3@web.de</a>,<br>
Florian Camphausen <a href="mailto:fcampi@gmx.de">fcampi@gmx.de</a>,<br>
Peter Ruckdeschel <a href="mailtoeter.Ruckdeschel@itwm.fraunhofer.de">Peter.Ruckdeschel@itwm.fraunhofer.de</a>,<br>
Matthias Kohl <a href="mailto:Matthias.Kohl@stamats.de">Matthias.Kohl@stamats.de</a>




参见----------See Also----------

PoisParameter-class DiscreteDistribution-class Naturals-class rpois
PoisParameter-classDiscreteDistribution-classNaturals-classrpois


实例----------Examples----------


P &lt;- Pois(lambda = 1) # P is a Poisson distribution with lambda = 1.[P是一个泊松分布,λ= 1。]
r(P)(1) # one random number generated from this distribution, e.g. 1[从这个分布中产生一个随机数,例如1]
d(P)(1) # Density of this distribution is 0.3678794 for x = 1.[这个分布的密度是0.3678794为x = 1。]
p(P)(0.4) # Probability that x &lt; 0.4 is 0.3678794.[概率X <0.4为0.3678794。]
q(P)(.1) # x = 0 is the smallest value x such that p(B)(x) &gt;= 0.1.[x = 0是最小的值x,使得P(B)(x)的> = 0.1。]
lambda(P) # lambda of this distribution is 1.[lambda值的这种分布是1。]
lambda(P) &lt;- 2 # lambda of this distribution is now 2.[这种分布的lambda值现在是2。]
R &lt;- Pois(lambda = 3) # R is a Poisson distribution with lambda = 2.[R为λ= 2的泊松分布。]
S &lt;- P + R # R is a Poisson distribution with lambda = 5(=2+3).[R是一个泊松分布的lambda = 5(2 +3)。]

转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。


注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
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