<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Wyc72409的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Wyc72409</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Wyc72409]]></copyright><item><title><![CDATA[删除占用的端口]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/163730279</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/163730279</guid><author>Wyc72409</author><pubDate>Thu, 13 Aug 2026 17:02:52 +0800</pubDate><description><![CDATA[这条命令会列出所有和8080端口相关的连接。会显示程序的名字，帮你判断是否是一个可以安全结束的进程。执行成功后，端口就会被释放。，这就是占用该端口的进程PID（进程标识符）。这一步很重要，否则可能没权限终止某些进程。重点关注最后面的数字 12345。替换成你实际要查询的端口号。]]></description><category></category></item><item><title><![CDATA[agent第一周学习]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/162874894</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/162874894</guid><author>Wyc72409</author><pubDate>Tue, 14 Jul 2026 14:56:02 +0800</pubDate><description><![CDATA[如果面试问：Transformer 是怎么理解一句话的？你可以这样回答：Transformer首先通过Tokenizer将文本转换为Token，再通过Embedding将Token映射成向量，并加入位置编码。进入Transformer Block后，通过Multi-Head Self-Attention让每个Token动态关注上下文信息，再通过Feed Forward进行特征加工，Residual和LayerNorm保证深层网络稳定训练。经过多层堆叠后，模型获得上下文语义表示，最终预测输出。]]></description><category></category></item><item><title><![CDATA[正态总体样本方差、t 分布 纯文本笔记]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/162235307</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/162235307</guid><author>Wyc72409</author><pubDate>Tue, 23 Jun 2026 15:04:03 +0800</pubDate><description><![CDATA[若 Z~N (0,1)，W~χ²(df)，二者相互独立，则： t = Z / √(W/df) ~ t (df) 本题目标：构造自由度 df=n-1 的 t 分布，即 W 必须服从 χ²(n-1)]]></description><category></category></item><item><title><![CDATA[标准正态的使用]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/162233460</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/162233460</guid><author>Wyc72409</author><pubDate>Tue, 23 Jun 2026 14:18:03 +0800</pubDate><description><![CDATA[总体：\(X\sim N(\mu,\sigma^2)\)，\(\boldsymbol{\sigma}\) 是，样本量 n，样本均值 \(\bar{X}\) 核心公式： \(Z=\frac{\bar{X}-\mu}{\sigma/\sqrt{n}} \sim N(0,1)\) 这个标准正态 Z 统计量，就是置信区间、假设检验共用的工具。]]></description><category></category></item><item><title><![CDATA[Seata]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/161972395</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/161972395</guid><author>Wyc72409</author><pubDate>Sun, 14 Jun 2026 10:42:03 +0800</pubDate><description><![CDATA[Seata =👉。]]></description><category></category></item><item><title><![CDATA[Gateway]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/161972097</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/161972097</guid><author>Wyc72409</author><pubDate>Sun, 14 Jun 2026 10:28:33 +0800</pubDate><description><![CDATA[Gateway =👉。]]></description><category></category></item><item><title><![CDATA[Sentinel]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/161972008</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/161972008</guid><author>Wyc72409</author><pubDate>Sun, 14 Jun 2026 10:24:40 +0800</pubDate><description><![CDATA[Sentinel 是阿里开源的：👉。]]></description><category></category></item><item><title><![CDATA[OpenFeign]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/161971809</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/161971809</guid><author>Wyc72409</author><pubDate>Sun, 14 Jun 2026 10:15:31 +0800</pubDate><description><![CDATA[一句话：👉 你写接口 = Feign帮你发HTTP请求。]]></description><category></category></item><item><title><![CDATA[Nacos]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/161971737</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/161971737</guid><author>Wyc72409</author><pubDate>Sun, 14 Jun 2026 10:12:44 +0800</pubDate><description><![CDATA[Nacos 通过“心跳机制”保证服务存活状态。]]></description><category></category></item><item><title><![CDATA[法律法规与标准化知识]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160959386</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160959386</guid><author>Wyc72409</author><pubDate>Sun, 10 May 2026 20:52:53 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[信息安全与多媒体基础知识]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160958304</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160958304</guid><author>Wyc72409</author><pubDate>Sun, 10 May 2026 19:02:55 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[面向对象技术]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160933362</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160933362</guid><author>Wyc72409</author><pubDate>Sat, 09 May 2026 20:34:47 +0800</pubDate><description><![CDATA[具体分类。]]></description><category></category></item><item><title><![CDATA[UML建模]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160929148</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160929148</guid><author>Wyc72409</author><pubDate>Sat, 09 May 2026 19:39:02 +0800</pubDate><description><![CDATA[我们可以只画图标注关系不写代码属性，也可以根据开发业务需求，单边或双边添加对象引用、List 集合属性，另外只需给关联、聚合、组合标注多重度，泛化继承和接口实现关系不需要标注任何多重度。]]></description><category></category></item><item><title><![CDATA[结构化开发方法（数据流图）]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160928150</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160928150</guid><author>Wyc72409</author><pubDate>Sat, 09 May 2026 17:01:54 +0800</pubDate><description><![CDATA[外部实体不能变化，越往下就分化越细。]]></description><category></category></item><item><title><![CDATA[软件工程基础知识]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160896682</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160896682</guid><author>Wyc72409</author><pubDate>Fri, 08 May 2026 20:45:04 +0800</pubDate><description><![CDATA[左边开发、右边同步测试对应关系：需求分析 ↔ 验收测试概要设计 ↔ 系统测试详细设计 ↔ 集成测试编码 ↔ 单元测试。（最差）一个模块直接改另一个模块的内部代码、内部变量，完全绑死，一改全崩。多个相似功能放一起，靠判断分支区分，比如一个函数既查用户又查订单。，给用户看、反馈、修改，再正式开发分类：抛弃式原型、演化式原型。不管你内部怎么写，我只关心：给输入，能不能给出正确输出。钻进代码里，看每一行、每个分支、循环、条件有没有走到。：分模块、分批开发交付，先做核心功能，再逐步叠加。，一个改全局，全部受影响。]]></description><category></category></item><item><title><![CDATA[程序设计语言基础知识]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160884956</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160884956</guid><author>Wyc72409</author><pubDate>Fri, 08 May 2026 17:38:41 +0800</pubDate><description><![CDATA[所以第 (1) 题答案是。所以第 (2) 题答案是。先画出树，然后后序遍历。]]></description><category></category></item><item><title><![CDATA[数据库的基本知识点]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160880407</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160880407</guid><author>Wyc72409</author><pubDate>Fri, 08 May 2026 11:29:16 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[计算机网络基础]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160878081</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160878081</guid><author>Wyc72409</author><pubDate>Fri, 08 May 2026 09:37:29 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[计算机操作系统]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160867817</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160867817</guid><author>Wyc72409</author><pubDate>Fri, 08 May 2026 09:11:58 +0800</pubDate><description><![CDATA[像树形结构，解决大文件索引表放不下的问题。，索引块里直接指向所有数据块。]]></description><category></category></item><item><title><![CDATA[计算机操作系统 ]]></title><link>https://blog.youkuaiyun.com/Wyc72409/article/details/160800297</link><guid>https://blog.youkuaiyun.com/Wyc72409/article/details/160800297</guid><author>Wyc72409</author><pubDate>Thu, 07 May 2026 21:36:21 +0800</pubDate><description><![CDATA[分页是 “为了内存利用率”，强行把程序和内存切成固定大小的块，解决外部碎片问题，但破坏了程序的逻辑结构。分段是 “为了程序逻辑”，按模块把程序分成大小不一的段，方便共享、保护和模块化管理，但会产生外部碎片。]]></description><category></category></item></channel></rss>