Viterbi
An implementation of HMM-Viterbi Algorithm
- How to Use
public static void main(String[] args)
{
int[] result = Viterbi.compute(observations, states, start_probability, transititon_probability, emission_probability);
for (int r : result)
{
System.out.print(Weather.values()[r] + " ");
}
}- About the algorithm
See Wiki
Viterbi
通用维特比算法的Java实现
- 调用方法
public static void main(String[] args)
{
int[] result = Viterbi.compute(observations, states, start_probability, transititon_probability, emission_probability);
for (int r : result)
{
System.out.print(Weather.values()[r] + " ");
}
}- 算法详解
代码本身没什么新意，看到Git上没有好用的Viterbi的Java实现，所以补个缺。特点是简单好懂，一个方法搞定。调用简单，往compute方法里填充HMM的五元组就能得到最佳标注序列。 附赠一个对经典天气预测问题的求解，问题的描述和思路详见前文： 详见《HMM与分词、词性标注、命名实体识别》