Update 12.md

docs/1.7/12.md

 # PYTHORCH: NN
 
 > 原文：<https://pytorch.org/tutorials/beginner/examples_nn/polynomial_nn.html#sphx-glr-beginner-examples-nn-polynomial-nn-py>
+>
+> 校对：DrDavidS
 
 一个三阶多项式，通过最小化平方欧几里得距离来训练，并预测函数 `y = sin(x)` 在`-pi`到`pi`上的值。
 
@@ -86,5 +88,3 @@ print(f'Result: y = {linear_layer.bias.item()} + {linear_layer.weight[:, 0].item
 [下载 Python 源码：`polynomial_nn.py`](https://pytorch.org/tutorials/_downloads/b4767df4367deade63dc8a0d3712c1d4/polynomial_nn.py)
 
 [下载 Jupyter 笔记本：`polynomial_nn.ipynb`](https://pytorch.org/tutorials/_downloads/7bc167d8b8308ae65a717d7461d838fa/polynomial_nn.ipynb)
-
-校对：DrDavidS
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