curled inequality
时间: 2023-10-28 19:58:46 浏览: 53
Curled不等式是应用于概率论和统计学中的一个重要的不等式。它被用来比较两个猜测的后验概率。根据Curled不等式,对于任意两个猜测h1和h2,它们的后验概率P(h1 | D)和P(h2 | D)之间的大小关系可以通过它们的先验概率P(h1)和P(h2)以及给定数据的条件概率P(D | h1)和P(D | h2)来比较。Curled不等式表明,如果P(h1)和P(h2)相等,那么P(D | h1)大于P(D | h2),则P(h1 | D)大于P(h2 | D)。换句话说,当两个猜测的先验概率相等时,给定数据的条件概率越大,相应的后验概率就越大。这一结论对于贝叶斯方法的计算和推理非常重要。
相关问题
arduino用按键控制4个流水灯和蜂鸣器的代码
可以参考以下代码:
```C++
int ledPins[] = {2, 3, 4, 5}; // 4个流水灯的引脚
int buzzerPin = 6; // 蜂鸣器引脚
int buttonPin = 7; // 按键引脚
bool isPlaying = false; // 是否正在播放蜂鸣器声音
int curLed = 0; // 当前亮灯的序号
void setup() {
// 初始化引脚
for (int i = 0; i < 4; i++) {
pinMode(ledPins[i], OUTPUT);
digitalWrite(ledPins[i], LOW); // 初始时关闭所有灯
}
pinMode(buzzerPin, OUTPUT);
pinMode(buttonPin, INPUT_PULLUP);
randomSeed(analogRead(A0)); // 初始化随机数生成器
}
void loop() {
if (digitalRead(buttonPin) == LOW) { // 按键按下
if (!isPlaying) { // 如果没有播放声音
isPlaying = true;
buzz(); // 播放蜂鸣器声音
}
} else {
if (isPlaying) { // 如果正在播放声音
isPlaying = false;
noTone(buzzerPin); // 停止播放蜂鸣器声音
} else {
// 依次点亮流水灯
digitalWrite(ledPins[curLed], HIGH);
delay(50);
digitalWrite(ledPins[curLed], LOW);
curLed = (curLed + 1) % 4; // 循环遍历4个灯
}
}
}
void buzz() {
int freq = random(500, 1000);
for (int i = 0; i < 100; i++) {
tone(buzzerPin, freq);
delay(10);
noTone(buzzerPin);
delay(10);
}
}
```
希望能帮到你。
创建父类:动物。拥有姓名、月份、物种三个属性,有吃东西、输出年龄的方法。 创建子类狗,继承父类,有体重和尾巴两个属性,有定义尾巴形状、输出物种、获取体重的方法。 创建子类企鹅,继承父类,有体重这个属性,有跑、输出物种、获取体重的方法。 创建测试类。定义企鹅、输出方法,定义狗,输出方法。 用Java写
以下是Java代码实现:
```java
// 父类 Animal
class Animal {
protected String name;
protected int month;
protected String species;
public Animal(String name, int month, String species) {
this.name = name;
this.month = month;
this.species = species;
}
public void eat() {
System.out.println(name + " is eating.");
}
public void outputAge() {
System.out.println(name + " is " + month + " months old.");
}
}
// 子类 Dog
class Dog extends Animal {
private double weight;
private String tailShape;
public Dog(String name, int month, String species, double weight, String tailShape) {
super(name, month, species);
this.weight = weight;
this.tailShape = tailShape;
}
public void defineTailShape(String shape) {
tailShape = shape;
System.out.println(name + "'s tail shape is " + tailShape + ".");
}
public void outputSpecies() {
System.out.println(name + " is a " + species + ".");
}
public double getWeight() {
return weight;
}
}
// 子类 Penguin
class Penguin extends Animal {
private double weight;
public Penguin(String name, int month, String species, double weight) {
super(name, month, species);
this.weight = weight;
}
public void run() {
System.out.println(name + " is running.");
}
public void outputSpecies() {
System.out.println(name + " is a " + species + ".");
}
public double getWeight() {
return weight;
}
}
// 测试类
public class Test {
public static void main(String[] args) {
// 创建企鹅对象
Penguin penguin = new Penguin("Peng", 6, "Emperor penguin", 20.5);
// 输出物种和体重
penguin.outputSpecies();
System.out.println(penguin.getWeight());
// 创建狗对象
Dog dog = new Dog("Max", 12, "Golden retriever", 25.8, "curled");
// 输出物种和体重
dog.outputSpecies();
System.out.println(dog.getWeight());
}
}
```
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