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laowu2016 · Jan 20, 2018 · 1c78358 · 1c78358
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diff --git a/...rning/14.7 Independent Component Analysis and Exploratory Projection Pursuit.md b/...rning/14.7 Independent Component Analysis and Exploratory Projection Pursuit.md
@@ -44,14 +44,15 @@ $$
 
 $$
 \begin{align}
-X_1&=a_{11}S_1+a_{12}S_2+\cdots+a_{1p}S_p+\epsilon_1\\
-X_2&=a_{21}S_1+a_{22}S_2+\cdots+a_{2p}S_p+\epsilon_2\\
+X_1&=a_{11}S_1+a_{12}S_2+\cdots+a_{1p}S_q+\epsilon_1\\
+X_2&=a_{21}S_1+a_{22}S_2+\cdots+a_{2p}S_q+\epsilon_2\\
 \vdots &=\vdots\\
-X_p&=a_{p1}S_1+a_{p2}S_2+\cdots+a_{pp}S_p+\epsilon_p
+X_p&=a_{p1}S_1+a_{p2}S_2+\cdots+a_{pp}S_q+\epsilon_p
 \end{align}
-\qquad (14.78)
+\qquad (14.80)
 $$
 
+或者写成$X=\A S+\epsilon$。这里$S$是$q < p$个揭示潜变量或者因子的向量，$\A$是$p\times q$的因子载荷(loadings)矩阵，$\varepsilon_j$是零均值不相干的扰动。
 
 ## 独立分量分析
 

diff --git a/yeti/base.html b/yeti/base.html
@@ -59,9 +59,8 @@
 }
 	</style>
 -->
-{%- for path in extra_javascript %}
-<script src="{{ path }}"></script>
-{%- endfor %}
+<script data-cfasync="false" type="text/javascript" async src="https://cdn.bootcss.com/mathjax/2.7.2-beta.0/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+</script>
     </head>
     <body>
 
@@ -87,7 +86,9 @@
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         <script src="{{ base_url }}/js/base.js"></script>
 	<script src="{{ base_url }}/js/jquery.dropdown.js"></script>
-
+        {%- for path in extra_javascript %}
+        <script src="{{ path }}"></script>
+        {%- endfor %}
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