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不迷茫，不等待 2018-11-09 19:07:03 +08:00
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ch9_图像分割/第九章_图像分割.md
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@ -617,8 +617,9 @@ $$
$$ $$
\sum_{i}\psi _i^{scr}\left(y_i|X,S\right)+\sum _i-logP\left(y_i| X,\theta\right)+\sum_{i,j}\psi _{ij}\left(y_i,y_j|X\right) \sum_{i}\psi _i^{scr}\left(y_i|X,S\right)+\sum _i-logP\left(y_i| X,\theta\right)+\sum_{i,j}\psi _{ij}\left(y_i,y_j|X\right)
$$ $$
     
上式的最优化是通过交替求$Y$和$\theta$的最优值来实现的。文章中发现通过三次迭代就能得到比较好的结果。 上式的最优化是通过交替求 $Y$ 和 $\theta$ 的最优值来实现的。文章中发现通过三次迭代就能得到比较好的结果。
<center><img src="./img/ch9/figure_9.9_3.png"></center> <center><img src="./img/ch9/figure_9.9_3.png"></center>
**9.9.2 图像级别标记** **9.9.2 图像级别标记**