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Joao Paulo Papa edited Introduction.tex
over 8 years ago
Commit id: beb64223648370a4b115b3c7ccd1b8a93354df45
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index 08c5ae7..9694e15 100644
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...
\begin{eqnarray}
\label{e.hmcr}
\hat{x}_{m+1,j} & = & \left\{ \begin{array}{ll} x_{A,j} & \mbox{{ with probability
HMCR}} $HMCR$}} \\
\theta \in \bm{\Phi}_j & \mbox{{ with probability
(1-HMCR),}} (1-$HMCR$),}}
\end{array}\right.
\end{eqnarray}
where $A\sim {\cal U}(1,2,\ldots,m)$, and $\bm{\Phi}=\{\bm{\Phi}_1,\bm{\Phi}_2,\ldots,\bm{\Phi}_m\}$ stands for the set of feasible values for each decision variable.
...
\begin{eqnarray}
\label{e.par}
x_{m+1,j} & = & \left\{ \begin{array}{ll} x_{m+1,j}\pm \varphi_j \varrho & \mbox{{ with probability
PAR}} $PAR$}} \\
x_{m+1,j} & \mbox{{ with probability
(1-PAR).}} (1-$PAR$).}}
\end{array}\right.
\end{eqnarray}
The pitch adjustment is often used to improve solutions and to escape from local optima. This mechanism concerns shifting the neighboring values of some decision variable in the harmony, where $\varrho$ is an arbitrary distance bandwidth, and $\varphi_j\sim {\cal U}(0,1)$.
...
\begin{eqnarray}
\label{e.hmcr_sghs}
x_{m+1,j} & = & \left\{ \begin{array}{ll} x_{A,j}\pm \varphi_j \varrho & \mbox{{ with probability
HMCR}} $HMCR$}} \\
\theta \in \bm{\Phi}_j & \mbox{{ with probability
(1-HMCR)}.} (1-$HMCR$)}.}
\end{array}\right.
\end{eqnarray}
...
\begin{equation}
\label{e.position_tmp_bat}
\tilde{\textbf{x}}^{t+1}=\textbf{x}^t_i+\textbf{v}^{t+1}_i, \tilde{\textbf{x}}^{t+1}=\textbf{x}^t_i+\textbf{v}^{t+1}_i.
\end{equation}
Further, we apply a random walk with probability $p_r$ (also known as ``pulse rate"):
\begin{eqnarray}
\label{e.random_walk_bat}
\tilde{\textbf{x}}^{t+1} & = & \left\{ \begin{array}{ll} \tilde{\textbf{x}}^{t+1}+\epsilon\bar{A} & \mbox{{ with probability $p_r$}} \\
\tilde{\textbf{x}}^{t+1} & \mbox{{ with probability (1-$p_r$)}.}
\end{array}\right.
\end{eqnarray}
%\begin{equation}