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    <title>yxshu Blog</title>
    <description>按时间整理课程学习、技术实践、项目复盘，以及 AI 与算法相关的笔记。</description>
    <link>/blog/</link>
    
      <item>
        <title>9.9.26</title>
        <description>我发誓明天开始背雅思单词。。。</description>
        <pubDate>Tue, 08 Sep 2026 23:59:00 GMT</pubDate>
        <link>/blog/thoughts-2026-09-09/</link>
        <guid>/blog/thoughts-2026-09-09/</guid>
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      <item>
        <title>错排问题的多种解法</title>
        <description>错排问题（Derangement）</description>
        <pubDate>Mon, 07 Sep 2026 19:12:00 GMT</pubDate>
        <link>/blog/derangement-methods/</link>
        <guid>/blog/derangement-methods/</guid>
      </item>
    
      <item>
        <title>十二重计数</title>
        <description>十二重计数 (the twelvefold way), by G.- C.Rota (1932-1999).</description>
        <pubDate>Mon, 07 Sep 2026 14:39:00 GMT</pubDate>
        <link>/blog/twelvefold-way/</link>
        <guid>/blog/twelvefold-way/</guid>
      </item>
    
      <item>
        <title>机器学习-01</title>
        <description>Notes of the online lectures about Machine Learning by Prof. Zhihua Zhou on Bilibili.</description>
        <pubDate>Mon, 31 Aug 2026 21:11:00 GMT</pubDate>
        <link>/blog/machine-learning-01/</link>
        <guid>/blog/machine-learning-01/</guid>
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