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    <description>记录学习与思考，探索技术的边界</description>
    <language>zh-CN</language>
    <lastBuildDate>Wed, 29 Jul 2026 09:44:06 GMT</lastBuildDate>
    <item>
      <title>welcome1</title>
      <link>https://blog.jinghsy.cn/posts/welcome1</link>
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      <description></description>
      <pubDate>Wed, 29 Jul 2026 00:00:00 GMT</pubDate>
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    <item>
      <title>欢迎来到我的博客</title>
      <link>https://blog.jinghsy.cn/posts/welcome</link>
      <guid>https://blog.jinghsy.cn/posts/welcome</guid>
      <description>用 Next.js 自建的极简博客，展示 Markdown、公式与代码高亮。</description>
      <pubDate>Tue, 28 Jul 2026 00:00:00 GMT</pubDate>
      <category>公告</category>
    </item>
    <item>
      <title>GRPO 及其变体</title>
      <link>https://blog.jinghsy.cn/posts/grpo</link>
      <guid>https://blog.jinghsy.cn/posts/grpo</guid>
      <description>GRPO 去掉 Critic，用组相对优势估计优势函数。</description>
      <pubDate>Mon, 27 Jul 2026 00:00:00 GMT</pubDate>
      <category>RL</category>
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    <item>
      <title>RLHF-PPO 概念梳理</title>
      <link>https://blog.jinghsy.cn/posts/rlhf-ppo</link>
      <guid>https://blog.jinghsy.cn/posts/rlhf-ppo</guid>
      <description>RLHF 场景下 PPO 的关键概念与 KL 约束。</description>
      <pubDate>Sat, 25 Jul 2026 00:00:00 GMT</pubDate>
      <category>RL</category>
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