AliasMethod (DevJava)

java.lang.Object
- dev.utils.common.random.AliasMethod

```
public final class AliasMethod
extends java.lang.Object
```
detail: 随机概率采样算法
作者:
Keith Schwarz
另请参阅:

,

构造器概要

构造器
构造器说明

AliasMethod(java.util.List<java.lang.Double> probabilities)
Constructs a new AliasMethod to sample from a discrete distribution and hand back outcomes based on the probability distribution.

AliasMethod(java.util.List<java.lang.Double> probabilities, java.util.Random random)
Constructs a new AliasMethod to sample from a discrete distribution and hand back outcomes based on the probability distribution.

方法概要

所有方法实例方法具体方法
修饰符和类型方法说明

int next()
获取随机索引 ( 对应几率索引 ) Samples a value from the underlying distribution.

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
  - AliasMethod
```
public AliasMethod(java.util.List<java.lang.Double> probabilities)
```
    Constructs a new AliasMethod to sample from a discrete distribution and hand back outcomes based on the probability distribution.
    Given as input a list of probabilities corresponding to outcomes 0, 1, ..., n - 1, this constructor creates the probability and alias tables needed to efficiently sample from this distribution.
    
    参数:
    
    probabilities - The list of probabilities.
  - AliasMethod
```
public AliasMethod(java.util.List<java.lang.Double> probabilities,
                   java.util.Random random)
```
    Constructs a new AliasMethod to sample from a discrete distribution and hand back outcomes based on the probability distribution.
    Given as input a list of probabilities corresponding to outcomes 0, 1, ..., n - 1, along with the random number generator that should be used as the underlying generator, this constructor creates the probability and alias tables needed to efficiently sample from this distribution.
    
    参数:
    
    probabilities - The list of probabilities.
    
    random - The random number generator
- 方法详细资料
  - next
```
public int next()
```
    获取随机索引 ( 对应几率索引 ) Samples a value from the underlying distribution.
    
    返回:
    
    A random value sampled from the underlying distribution.