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minor typo #4

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2 changes: 1 addition & 1 deletion nano_r1.ipynb
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Expand Up @@ -74,7 +74,7 @@
" $ y_1, y_2, \\cdots, y_G \\sim \\pi_\\theta(y|x) $\n",
"\n",
" These $G$ responses form what is called a *group* in GRPO.\n",
" - Compute a reward $R_i$ for each response and normalize them tocalculate the GRPO advantage within each group.\n",
" - Compute a reward $R_i$ for each response and normalize them to calculate the GRPO advantage within each group.\n",
" - Create a list of $N \\times G$ episodes, i.e., pairs of $(x_i, y_i)$ along with their corresponding advantages.\n",
" - Estimate the policy gradient $\\vec{g}_{pg}$ from these episodes.\n",
" - Update the model parameters: \n",
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