<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[hatii的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/hatii</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; hatii]]></copyright><item><title><![CDATA[黑马的js作业day1]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/149727054</link><guid>https://blog.youkuaiyun.com/hatii/article/details/149727054</guid><author>hatii</author><pubDate>Mon, 28 Jul 2025 22:32:00 +0800</pubDate><description><![CDATA[本文展示了一个简单的订单系统实现demo，主要思路是：先搭建静态HTML框架和CSS样式，然后通过JavaScript动态获取用户输入（商品价格、数量、地址），计算总价后渲染输出到页面。代码实现包括基本的表格布局和交互逻辑，通过prompt获取用户输入，使用模板字符串动态生成订单表格内容。这个示例展现了前端开发中从静态页面到动态交互的基本实现过程。]]></description><category></category></item><item><title><![CDATA[遥感，TV正则化（Total Variation Regularization）。]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/149723144</link><guid>https://blog.youkuaiyun.com/hatii/article/details/149723144</guid><author>hatii</author><pubDate>Mon, 28 Jul 2025 18:48:47 +0800</pubDate><description><![CDATA[总损失公式： \mathcal{L} = \mathcal{L}_{rec} + \mu \left( \sum_{l=1}^L \left\| G^l(e_s) \right\|_1 + \sum_{l=1}^L \left\| G^l(e_g) \right\|_1 \right)- 重建损失： \mathcal{L}_{rec} = \sum_k \sum_i \| f_\theta(X_t^k, P_i^k, M_i^k, e_s^i, e_g^i) - X_0^k \|_1；]]></description><category></category></item><item><title><![CDATA[初级数据分析-python(第一节数据存储)]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/127837785</link><guid>https://blog.youkuaiyun.com/hatii/article/details/127837785</guid><author>hatii</author><pubDate>Sun, 13 Nov 2022 21:28:57 +0800</pubDate><description><![CDATA[在大数据时代，各领域都为数据分析提供海量的数据源。数据可以分为非结构化数据、半结构化数据和结构化数据。对于数据分析师而言，工作中经常面对的数据格式有excel数据，JSON数据，以及SQLite等数据库数据。因此，本章节将以这三种格式的数据为例，讲解数据的常用存取方法。对于csv格式文件，可以用csv模块的csv.reader()方法读取，也可以利用pandas的read_csv()方法读取。对于xlsx和xls格式文件，可以用pandas和read_Excel()方法读取。]]></description><category></category></item><item><title><![CDATA[西瓜书:决策树]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126999024</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126999024</guid><author>hatii</author><pubDate>Thu, 22 Sep 2022 20:20:43 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[C语言考试练习题_排列]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126843476</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126843476</guid><author>hatii</author><pubDate>Tue, 13 Sep 2022 23:02:04 +0800</pubDate><description><![CDATA[有4个互不相同的数字，输出由其中三个不重复数字组成的排列。]]></description><category></category></item><item><title><![CDATA[机器学习（西瓜书）绪论]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126843097</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126843097</guid><author>hatii</author><pubDate>Tue, 13 Sep 2022 22:27:25 +0800</pubDate><description><![CDATA[绪论02模型评估与选择03线性回归。]]></description><category></category></item><item><title><![CDATA[C语言考试练习题_保留字母]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126823663</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126823663</guid><author>hatii</author><pubDate>Mon, 12 Sep 2022 22:00:20 +0800</pubDate><description><![CDATA[编一个程序，输入一个字符串，将组成字符串的所有非英文字母的字符删除后输出。输入一串字符串 对其中的每个字符进行逐一判断 若为字母则可以输出。一个字符串，长度不超过80个字符。删掉非英文字母后的字符串。]]></description><category></category></item><item><title><![CDATA[ACM初级： A+B for Input-Output Practice (VI)]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126806567</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126806567</guid><author>hatii</author><pubDate>Sun, 11 Sep 2022 16:35:50 +0800</pubDate><description><![CDATA[经过分析,这是oj系统中的一个坑,其实是有结束条件的,就类似于c语言中的EOF,c++训练,由于不知道数据要输入多少行,,就可以实现控制结束条件的了(cin失败返回false)无法用for循环进行控制要测试的行数目,也莫得结束条件。利用cin写再while循环中。]]></description><category></category></item><item><title><![CDATA[ACM初级：A+B for Input-Output Practice (II)]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126799549</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126799549</guid><author>hatii</author><pubDate>Sat, 10 Sep 2022 20:55:40 +0800</pubDate><description><![CDATA[while（n)这时候不太好用的。]]></description><category></category></item><item><title><![CDATA[ACM初级 A+B for Input-Output Practice (I)]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126799485</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126799485</guid><author>hatii</author><pubDate>Sat, 10 Sep 2022 20:47:10 +0800</pubDate><description><![CDATA[解题关键：看懂英文题意。]]></description><category></category></item><item><title><![CDATA[二级C语言-阶乘公式求值]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126789028</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126789028</guid><author>hatii</author><pubDate>Fri, 09 Sep 2022 20:53:24 +0800</pubDate><description><![CDATA[二级C语言，初级算法]]></description><category></category></item><item><title><![CDATA[二级C语言-寻找矩阵最值]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126788587</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126788587</guid><author>hatii</author><pubDate>Fri, 09 Sep 2022 20:14:19 +0800</pubDate><description><![CDATA[初级算法题，二级c语言]]></description><category></category></item><item><title><![CDATA[迭代法求平方根]]></title><link>https://blog.youkuaiyun.com/hatii/article/details/126713507</link><guid>https://blog.youkuaiyun.com/hatii/article/details/126713507</guid><author>hatii</author><pubDate>Mon, 05 Sep 2022 21:14:35 +0800</pubDate><description><![CDATA[牛顿迭代法求平方根]]></description><category></category></item></channel></rss>