ContinuousDistributions (HanLP portable-1.5.3 API)

java.lang.Object
- com.hankcs.hanlp.classification.statistics.ContinuousDistributions

```
public class ContinuousDistributions
extends Object
```
提供常见连续分布的概率密度函数和累积分布函数计算

作者:

Vasilis Vryniotis

构造器概要

构造器
构造器和说明

ContinuousDistributions()

构造器
构造器和说明
`ContinuousDistributions()`

方法概要

All Methods Static Methods Concrete Methods
限定符和类型	方法和说明
`static double`	`ChisquareCdf(double x, int df)` 给定卡方值和自由度，计算从0到x的累积分布函数值
`static double`	`ChisquareInverseCdf(double p, int df)` 给定卡方分布的p值和自由度，返回卡方值。
`protected static double`	`GammaCdf(double x, double a)` 伽马函数
`static double`	`GaussCdf(double z)` 给定高斯函数的z值，返回p值（累积分布函数值） http://jamesmccaffrey.wordpress.com/2010/11/05/programmatically-computing-the-area-under-the-normal-curve/
`protected static double`	`Gcf(double x, double A)` Internal function used by GammaCdf
`protected static double`	`Gser(double x, double A)` Internal function used by GammaCdf
`static double`	`LogGamma(double Z)` Log Gamma Function

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - ContinuousDistributions
```
public ContinuousDistributions()
```
- 方法详细资料
  - ChisquareCdf
```
public static double ChisquareCdf(double x,
                                  int df)
                           throws IllegalArgumentException
```
    给定卡方值和自由度，计算从0到x的累积分布函数值
    
    参数:
    
    x - 卡方值
    
    df - 自由度
    
    返回:
    
    从0到x的累积分布函数值
    
    抛出:
    
    IllegalArgumentException
  - GaussCdf
```
public static double GaussCdf(double z)
```
    给定高斯函数的z值，返回p值（累积分布函数值）
    http://jamesmccaffrey.wordpress.com/2010/11/05/programmatically-computing-the-area-under-the-normal-curve/
    
    参数:
    
    z - 从负无穷到正无穷的值
    
    返回:
    
    高斯函数累积分布函数值
  - LogGamma
```
public static double LogGamma(double Z)
```
    Log Gamma Function
    
    参数:
    
    Z -
    
    返回:
  - Gcf
```
protected static double Gcf(double x,
                            double A)
```
    Internal function used by GammaCdf
    
    参数:
    
    x -
    
    A -
    
    返回:
  - Gser
```
protected static double Gser(double x,
                             double A)
```
    Internal function used by GammaCdf
    
    参数:
    
    x -
    
    A -
    
    返回:
  - GammaCdf
```
protected static double GammaCdf(double x,
                                 double a)
                          throws IllegalArgumentException
```
    伽马函数
    
    参数:
    
    x -
    
    a -
    
    返回:
    
    抛出:
    
    IllegalArgumentException
  - ChisquareInverseCdf
```
public static double ChisquareInverseCdf(double p,
                                         int df)
```
    给定卡方分布的p值和自由度，返回卡方值。内部采用二分搜索实现，移植自JS代码： http://www.fourmilab.ch/rpkp/experiments/analysis/chiCalc.js
    
    参数:
    
    p - p值（置信度）
    
    df -
    
    返回:

类 ContinuousDistributions

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

ContinuousDistributions

方法详细资料

ChisquareCdf

GaussCdf

LogGamma

Gcf

Gser

GammaCdf

ChisquareInverseCdf