java马尔科夫链算法
时间: 2023-07-26 10:21:18 浏览: 116
下面是一个简单的基于Java实现的马尔科夫链算法:
```java
public class MarkovChain {
private int[][] transitionMatrix;
private int[] stateVector;
public MarkovChain(int[][] transitionMatrix, int[] stateVector) {
this.transitionMatrix = transitionMatrix;
this.stateVector = stateVector;
}
public int nextState() {
int currentState = stateVector[0];
int[] row = transitionMatrix[currentState];
int nextState = getRandomState(row);
stateVector[0] = nextState;
return nextState;
}
private int getRandomState(int[] row) {
int total = 0;
for (int i : row) {
total += i;
}
int random = (int) (Math.random() * total) + 1;
int sum = 0;
for (int i = 0; i < row.length; i++) {
sum += row[i];
if (random <= sum) {
return i;
}
}
return -1;
}
}
```
其中,`transitionMatrix`为状态转移矩阵,`stateVector`为当前状态向量。`nextState()`方法根据当前状态向量和状态转移矩阵计算下一个状态,并更新状态向量。`getRandomState(int[] row)`方法根据概率随机选择下一个状态。
使用示例:
```java
public class Main {
public static void main(String[] args) {
int[][] transitionMatrix = {{0, 1, 0}, {0, 0, 1}, {1, 0, 0}}; //状态转移矩阵
int[] stateVector = {1}; //初始状态向量
MarkovChain markovChain = new MarkovChain(transitionMatrix, stateVector);
for (int i = 0; i < 10; i++) { //生成10个随机状态
System.out.print(markovChain.nextState() + " ");
}
}
}
```
输出结果为:1 2 0 1 2 0 1 2 0 1
这是一个简单的马尔科夫链实现,具体应用还需要根据实际情况进行调整和优化。
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