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    <title>DL on Mohit Dulani</title>
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      <title>Post training methods in LLM using RL</title>
      <link>https://complete-dope.github.io/codex/posts/reinforcement-learning/</link>
      <pubDate>Sat, 23 Aug 2025 00:00:00 +0000</pubDate>
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      <description>&lt;p&gt;Tags :
&lt;a href=&#34;https://www.youtube.com/watch?v=TjHH_--7l8g&#34;&gt;PPO&lt;/a&gt;&lt;br&gt;
&lt;a href=&#34;https://yugeten.github.io/posts/2025/01/ppogrpo/&#34;&gt;RLHF&lt;/a&gt;&lt;/p&gt;
&lt;h3 id=&#34;maths&#34;&gt;Maths&lt;/h3&gt;
&lt;p&gt;Reinforcement learning, here the agent takes / decides some action to take based on the current state and other variables present at timestep t, and then its takes that action and a reward is followed and weights are updated based on the rewards received by model&lt;/p&gt;
&lt;p&gt;Consider this basic &lt;code&gt;hello world&lt;/code&gt; example of RL&lt;/p&gt;
&lt;p&gt;State : Any place / position where the agent can be&lt;/p&gt;
&lt;p&gt;Action : Up , down , left , right these are the action the agent can take&lt;/p&gt;</description>
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