\section{Rectifier\+Function Class Reference}
\label{classmlpack_1_1ann_1_1RectifierFunction}\index{Rectifier\+Function@{Rectifier\+Function}}


The rectifier function, defined by.  


\subsection*{Static Public Member Functions}
\begin{DoxyCompactItemize}
\item 
static double \textbf{ Deriv} (const double x)
\begin{DoxyCompactList}\small\item\em Computes the first derivative of the rectifier function. \end{DoxyCompactList}\item 
{\footnotesize template$<$typename Input\+Type , typename Output\+Type $>$ }\\static void \textbf{ Deriv} (const Input\+Type \&y, Output\+Type \&x)
\begin{DoxyCompactList}\small\item\em Computes the first derivatives of the rectifier function. \end{DoxyCompactList}\item 
static double \textbf{ Fn} (const double x)
\begin{DoxyCompactList}\small\item\em Computes the rectifier function. \end{DoxyCompactList}\item 
{\footnotesize template$<$typename eT $>$ }\\static void \textbf{ Fn} (const arma\+::\+Mat$<$ eT $>$ \&x, arma\+::\+Mat$<$ eT $>$ \&y)
\begin{DoxyCompactList}\small\item\em Computes the rectifier function using a dense matrix as input. \end{DoxyCompactList}\item 
{\footnotesize template$<$typename eT $>$ }\\static void \textbf{ Fn} (const arma\+::\+Cube$<$ eT $>$ \&x, arma\+::\+Cube$<$ eT $>$ \&y)
\begin{DoxyCompactList}\small\item\em Computes the rectifier function using a 3rd-\/order tensor as input. \end{DoxyCompactList}\end{DoxyCompactItemize}


\subsection{Detailed Description}
The rectifier function, defined by. 

\begin{eqnarray*} f(x) &=& \max(0, x) \\ f'(x) &=& \left\{ \begin{array}{lr} 1 & : x > 0 \\ 0 & : x \le 0 \end{array} \right. \end{eqnarray*} 

Definition at line 45 of file rectifier\+\_\+function.\+hpp.



\subsection{Member Function Documentation}
\mbox{\label{classmlpack_1_1ann_1_1RectifierFunction_acd77fae79f7ba1f4b9a21e07a261e537}} 
\index{mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}!Deriv@{Deriv}}
\index{Deriv@{Deriv}!mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}}
\subsubsection{Deriv()\hspace{0.1cm}{\footnotesize\ttfamily [1/2]}}
{\footnotesize\ttfamily static double Deriv (\begin{DoxyParamCaption}\item[{const double}]{x }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}, {\ttfamily [static]}}



Computes the first derivative of the rectifier function. 


\begin{DoxyParams}{Parameters}
{\em x} & Input data. \\
\hline
\end{DoxyParams}
\begin{DoxyReturn}{Returns}
f\textquotesingle{}(x) 
\end{DoxyReturn}


Definition at line 91 of file rectifier\+\_\+function.\+hpp.



Referenced by Rectifier\+Function\+::\+Deriv().

\mbox{\label{classmlpack_1_1ann_1_1RectifierFunction_ac7573a8739be4400959956c5cc42d19b}} 
\index{mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}!Deriv@{Deriv}}
\index{Deriv@{Deriv}!mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}}
\subsubsection{Deriv()\hspace{0.1cm}{\footnotesize\ttfamily [2/2]}}
{\footnotesize\ttfamily static void Deriv (\begin{DoxyParamCaption}\item[{const Input\+Type \&}]{y,  }\item[{Output\+Type \&}]{x }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}, {\ttfamily [static]}}



Computes the first derivatives of the rectifier function. 


\begin{DoxyParams}{Parameters}
{\em y} & Input data. \\
\hline
{\em x} & The resulting derivatives. \\
\hline
\end{DoxyParams}


Definition at line 103 of file rectifier\+\_\+function.\+hpp.



References Rectifier\+Function\+::\+Deriv().

\mbox{\label{classmlpack_1_1ann_1_1RectifierFunction_a11bd9a1195e6b107f9fee73643bc328b}} 
\index{mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}!Fn@{Fn}}
\index{Fn@{Fn}!mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}}
\subsubsection{Fn()\hspace{0.1cm}{\footnotesize\ttfamily [1/3]}}
{\footnotesize\ttfamily static double Fn (\begin{DoxyParamCaption}\item[{const double}]{x }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}, {\ttfamily [static]}}



Computes the rectifier function. 


\begin{DoxyParams}{Parameters}
{\em x} & Input data. \\
\hline
\end{DoxyParams}
\begin{DoxyReturn}{Returns}
f(x). 
\end{DoxyReturn}


Definition at line 54 of file rectifier\+\_\+function.\+hpp.

\mbox{\label{classmlpack_1_1ann_1_1RectifierFunction_ab98eb0966f8d770ad8ce5eb422cc41c0}} 
\index{mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}!Fn@{Fn}}
\index{Fn@{Fn}!mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}}
\subsubsection{Fn()\hspace{0.1cm}{\footnotesize\ttfamily [2/3]}}
{\footnotesize\ttfamily static void Fn (\begin{DoxyParamCaption}\item[{const arma\+::\+Mat$<$ eT $>$ \&}]{x,  }\item[{arma\+::\+Mat$<$ eT $>$ \&}]{y }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}, {\ttfamily [static]}}



Computes the rectifier function using a dense matrix as input. 


\begin{DoxyParams}{Parameters}
{\em x} & Input data. \\
\hline
{\em y} & The resulting output activation. \\
\hline
\end{DoxyParams}


Definition at line 66 of file rectifier\+\_\+function.\+hpp.

\mbox{\label{classmlpack_1_1ann_1_1RectifierFunction_a6e5b128d616e05849ca1fc1833f7d569}} 
\index{mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}!Fn@{Fn}}
\index{Fn@{Fn}!mlpack\+::ann\+::\+Rectifier\+Function@{mlpack\+::ann\+::\+Rectifier\+Function}}
\subsubsection{Fn()\hspace{0.1cm}{\footnotesize\ttfamily [3/3]}}
{\footnotesize\ttfamily static void Fn (\begin{DoxyParamCaption}\item[{const arma\+::\+Cube$<$ eT $>$ \&}]{x,  }\item[{arma\+::\+Cube$<$ eT $>$ \&}]{y }\end{DoxyParamCaption})\hspace{0.3cm}{\ttfamily [inline]}, {\ttfamily [static]}}



Computes the rectifier function using a 3rd-\/order tensor as input. 


\begin{DoxyParams}{Parameters}
{\em x} & Input data. \\
\hline
{\em y} & The resulting output activation. \\
\hline
\end{DoxyParams}


Definition at line 79 of file rectifier\+\_\+function.\+hpp.



The documentation for this class was generated from the following file\+:\begin{DoxyCompactItemize}
\item 
/var/www/mlpack.\+ratml.\+org/mlpack.\+org/\+\_\+src/mlpack-\/git/src/mlpack/methods/ann/activation\+\_\+functions/\textbf{ rectifier\+\_\+function.\+hpp}\end{DoxyCompactItemize}