LaTeX Commands for Algorithms

LaTeX codes for inserting algorithms.

package algorithm2e

\usepackage[ruled,linesnumbered]{algorithm2e}

\IncMargin{1.5em}
\begin{algorithm}[h]
	\SetKwData{Left}{left}
	\SetKwData{This}{this}
	\SetKwData{Up}{up}
	\SetKwFunction{Union}{Union}
	\SetKwFunction{FindCompress}{FindCompress}
	\SetKwInOut{Input}{input}
	\SetKwInOut{Output}{output}
	\Input{$\bm{\mathcal{D}} = \{(\mathbf{x}_{n}, \mathbf{y}_{n})\}_{n=1}^{N}$ - the set of observations of two r.v.s;\\ $\lambda$ - parameter of independence}
	\Output{The causal direction}
	\BlankLine

	Standardize observations of each r.v.\;
	Initialize $\beta$ and kernel parameters\;
	Optimize the objective in both directions, denote the the value of HSIC term by $\text{HSIC}_{X\to Y}$ and $\text{HSIC}_{Y\to X}$, respectively\;
	\uIf{$\text{HSIC}_{X\to Y}$ < $\text{HSIC}_{Y\to X}$}{The casual direction is $X\to Y$\;}
	\uElseIf{$\text{HSIC}_{X\to Y}$ > $\text{HSIC}_{Y\to X}$}{The casual direction is $Y\to X$\;}
	\Else{No decision made.}

	\caption{Causal Inference}\label{alg_cd}
\end{algorithm}
\DecMargin{1.5em}

package algorithm and algorithmic

\usepackage{algorithm}
\usepackage{algorithmic}

\begin{algorithm}[ht]
	\caption{exmp alg}
	\label{alg:exmp}
	\renewcommand{\algorithmicrequire}{\textbf{Input:}}
	\renewcommand{\algorithmicensure}{\textbf{Output:}}
	\begin{algorithmic}[1]
		\REQUIRE input of exmp alg
		\ENSURE output of exmp alg
		\STATE statement of exmp;
		\STATE statement of exmp.
		\IF{condition 1 here}
			\STATE statement of condition 1;
		\ELSIF{condition 2 here}
			\STATE statement of condition 2;
		\ELSE
			\STATE statement of other cases.
		\ENDIF
	\end{algorithmic}
\end{algorithm}