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doc: formula miss

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Alanli 2020-04-16 09:05:00 +09:00
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doc/py_tutorials/py_ml/py_svm/py_svm_basics/py_svm_basics.markdown
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@ -83,7 +83,7 @@ Let us define a kernel function \f$K(p,q)\f$ which does a dot product between tw
\begin{aligned}
K(p,q) = \phi(p).\phi(q) &= \phi(p)^T \phi(q) \\
&= (p_{1}^2,p_{2}^2,\sqrt{2} p_1 p_2).(q_{1}^2,q_{2}^2,\sqrt{2} q_1 q_2) \\
&= p_1 q_1 + p_2 q_2 + 2 p_1 q_1 p_2 q_2 \\
&= p_{1}^2 q_{1}^2 + p_{2}^2 q_{2}^2 + 2 p_1 q_1 p_2 q_2 \\
&= (p_1 q_1 + p_2 q_2)^2 \\
\phi(p).\phi(q) &= (p.q)^2
\end{aligned}