GIVE YOU FOR THE 5-MONTH

这篇深情的诗篇表达了作者与其爱人之间紧密相连的情感纽带。无论身在何处,心中的爱意始终伴随,彼此的命运交织在一起,共同经历生活的点滴。
I carry your heart with me , I carry it in my heart , I am never without it .

Anywhere I go , you go , my dear .

And whatever is done by only me , is you doing , my darling.

I fear no fate.. ...
根据原作 https://pan.quark.cn/s/459657bcfd45 的源码改编 Classic-ML-Methods-Algo 引言 建立这个项目,是为了梳理和总结传统机器学习(Machine Learning)方法(methods)或者算法(algo),和各位同仁相互学习交流. 现在的深度学习本质上来自于传统的神经网络模型,很大程度上是传统机器学习的延续,同时也在不少时候需要结合传统方法来实现. 任何机器学习方法基本的流程结构都是通用的;使用的评价方法也基本通用;使用的一些数学知识也是通用的. 本文在梳理传统机器学习方法算法的同时也会顺便补充这些流程,数学上的知识以供参考. 机器学习 机器学习是人工智能(Artificial Intelligence)的一个分支,也是实现人工智能最重要的手段.区别于传统的基于规则(rule-based)的算法,机器学习可以从数据中获取知识,从而实现规定的任务[Ian Goodfellow and Yoshua Bengio and Aaron Courville的Deep Learning].这些知识可以分为四种: 总结(summarization) 预测(prediction) 估计(estimation) 假想验证(hypothesis testing) 机器学习主要关心的是预测[Varian在Big Data : New Tricks for Econometrics],预测的可以是连续性的输出变量,分类,聚类或者物品之间的有趣关联. 机器学习分类 根据数据配置(setting,是否有标签,可以是连续的也可以是离散的)和任务目标,我们可以将机器学习方法分为四种: 无监督(unsupervised) 训练数据没有给定...
Write a C++ program that defines a class DateV2 that (1) Contains all the members in the class DateV1; Programming for Engineers C++ (2) Has two constructors as follows: One takes three parameters, int y, int m, int n; The other is the default constructor that takes no parameter (3) Has additional public member functions as follows: string getWeekDay(); // return the week day, for example, Sunday if day is 0, etc bool Leap(); // return if the year is leap int differFrom(DateV2& oneDate); // return the difference in days between the calling object // and the oneDate object void printDate(); // print the year, the month in English, the day, and the week day Test class DateV2 in the main function as follows: (1) Declare and set the objects today and tomorrow as in Problem 2. (2) Declare and initialize (by a constructor) an object to represent your OWN birthday. (3) Use the member function printDate to print today, tomorrow, and your birthday. (4) Output the weekday of today, tomorrow, and your own birthday. (5) Output how many days has passed since your birth (the difference between your birthday and today). Hint: i) We can use another string array to store the English name for week days (Sunday, Monday, through Saturday) ii) We know that it is Monday on Year 1, Month 1, and Day 1 iii) A good idea is to first design a function to compute the number of days that has passed since Year 1, Month 1, and Day 1, and then to use this function to compute the week day for a give date and to compute the difference between two dates. You can store the number of days for each of the 12 months in an integer array, which helps in counting the days.
05-22
```c++ #include <iostream> #include <string> using namespace std; class DateV1 { public: int year, month, day; DateV1() { year = 2021; month = 10; day = 1; } DateV1(int y, int m, int d) { year = y; month = m; day = d; } }; class DateV2 : public DateV1 { public: DateV2() : DateV1() {} DateV2(int y, int m, int d) : DateV1(y, m, d) {} string getWeekDay() { string weekdays[] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; int days = countDays(); return weekdays[days % 7]; } bool Leap() { if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) return true; return false; } int differFrom(DateV2& oneDate) { int days = countDays() - oneDate.countDays(); return days < 0 ? -days : days; } void printDate() { string months[] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; cout << year << "-" << months[month - 1] << "-" << day << endl; } private: int countDays() { int days = 0; for (int i = 1; i < year; i++) { if (Leap()) days += 366; else days += 365; } int monthDays[] = {31,28,31,30,31,30,31,31,30,31,30,31}; if (Leap()) monthDays[1] = 29; for (int i = 1; i < month; i++) { days += monthDays[i - 1]; } days += day - 1; return days; } }; int main() { DateV2 today(2021, 10, 1); DateV2 tomorrow(2021, 10, 2); DateV2 myBirthday(2000, 10, 1); cout << "Today's date: "; today.printDate(); cout << "Tomorrow's date: "; tomorrow.printDate(); cout << "My birthday: "; myBirthday.printDate(); cout << endl << "Weekday of today: " << today.getWeekDay() << endl; cout << "Weekday of tomorrow: " << tomorrow.getWeekDay() << endl; cout << "Weekday of my birthday: " << myBirthday.getWeekDay() << endl; cout << endl << "Days since my birthday: " << today.differFrom(myBirthday) << endl; return 0; } ```
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