基本概念 样本空间: 随机试验E的所有可能结果组成的集合, 为E的样本空间, 记为S 随机事件: E的样本空间S的子集为E的随机事件, 简称事件, 由一个样本点组成的单点集, 称为基本事件 对立事件/逆事件: 若A并B=S, 且A交B=空, 则称A与B互为逆事件, A与B互为对立事件. A上面加一横即A的逆事件 频率: 在相同的条件下进行了n次试验, 事件A发生的次数为A的频数, 与n的比值成为A的频率 概率: 设E为随机试验, S是E的样本空间, 对于E的每一个事件A赋予一个实数, 记为P(A…
Previously in this series: The beta distribution Empirical Bayes estimation Credible intervals The Bayesian approach to false discovery rates Bayesian A/B testing Beta-binomial regression Understanding empirical Bayesian hierarchical modeling Mixture…
https://www.quora.com/How-do-I-learn-mathematics-for-machine-learning   How do I learn mathematics for machine learning? Promoted by Time Doctor Software for productivity tracking. Time tracking and productivity improvement software with screenshots…
Home Web Board ProblemSet Standing Status Statistics   Problem F: 求平均年龄 Problem F: 求平均年龄 Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 720  Solved: 394[Submit][Status][Web Board] Description 定义一个Persons类,用于保存若干个人的姓名(string类型)和年龄(int类型),定义其方法 void ad…
1.Normal distribution In probability theory, the normal (or Gaussian or Gauss or Laplace–Gauss) distribution is a very common continuous probability distribution. Normal distributions are important in statistics and are often used in the natural and…
想要输出""的话: cout<<"A person whose name is \""<<name<<"\" and age is "<<age<<" is created!"<<endl; Home Web Board ProblemSet Standing Status Statistics   Problem G: 克隆人来了!…
Stat2.2x Probability(概率)课程由加州大学伯克利分校(University of California, Berkeley)于2014年在edX平台讲授. PDF笔记下载(Academia.edu) Summary Standard Error The standard error of a random variable $X$ is defined by $$SE(X)=\sqrt{E((X-E(X))^2)}$$ $SE$ measures the rough size…
Uva 11181 Probability|Given Problem's Link:   http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=18546 Mean: n个人去逛超市,第i个人会购买东西的概率是Pi.出超市以后发现有r个人买了东西,问你每个人购买东西的实际概率是多少. analyse: 转换模型: 有n个员工,每个员工被选出来的概率是Pi.最后选出了r个,问你第i个员工在这r个中的概率是多少. 设: 事件A---…
Home Web Board ProblemSet Standing Status Statistics   Problem I: 成绩排序 Problem I: 成绩排序 Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 490  Solved: 403[Submit][Status][Web Board] Description 定义Student类: 1. 数据成员string name和int score表示一个学生的姓名.成绩. 2. 无参构…
Home Web Board ProblemSet Standing Status Statistics   Problem H: 整型数组运算符重载 Problem H: 整型数组运算符重载 Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 643  Solved: 401[Submit][Status][Web Board] Description 定义Array类: 1.拥有数据成员int length和int *mems,分别是数组中元素的个数…