the equation in the algorithm environment doesn't in the middle

Question

I have the following problem: the equation in the algorithm doesn't in the middle of algorithm, how can I forward the equation, the code is as follows:

\begin{algorithm}[H]
\SetKwFor{KWHILE}{for}{do}{endfor}
    \caption{algorithm }
    \label{algo1} %
    \KWHILE{stop condition}{    
    \begin{enumerate}[(a)]
        \item sparse coding：problem$$\underset{{{\mathbf{x}}_{i}}}{\mathop{\min }}\,\left\| {{\mathbf{y}}_{i}}-{{\mathbf{D}}^{\left( J-1 \right)}}{{\mathbf{x}}_{i}} \right\|_{2}^{2}\ \ \ \ s.t.\ \ \ {{\left\| {{\mathbf{x}}_{i}} \right\|}_{0}}\le s$$ \\
        \item dictionary update：...
    \end{enumerate}}
\end{algorithm}

Can anyone help me with this?

Welcome to TeX.SE! Please tell us which packages need to be loaded in order to make your code compilable. Please also tell us which document class you use. — Mico, Mar 21 '17 at 14:47
In a list, I always put an equation inside a \parbox{\linewidth}, or possibly \hspace*{\dimexpr\linewidth-\textwidth}\parbox{\textwidth}. — John Kormylo, Mar 21 '17 at 15:37
You might want to read http://tex.stackexchange.com/questions/503/why-is-preferable-to — samcarter_is_at_topanswers.xyz, Mar 21 '17 at 16:50

Dr. Manuel Kuehner · Answer 1 · 2017-03-22T00:25:26.807

Not an answer.

I tried to guess what packages you use:

\documentclass{article}

% Show layout borders
\usepackage{showframe}

% \SetKwFor
\usepackage[boxed]{algorithm2e}

% \begin{enumerate}[(a)]
\usepackage{enumerate}

% \underset
\usepackage{mathtools}

\begin{document}

\section*{Your Code}

\begin{algorithm}[H]
\SetKwFor{KWHILE}{for}{do}{endfor}
    \caption{algorithm }
    \label{algo1} %
    \KWHILE{stop condition}{    
    \begin{enumerate}[(a)]
        \item sparse coding：problem
        $$
        \underset{{{\mathbf{x}}_{i}}}{\mathop{\min }}\,\left\| {{\mathbf{y}}_{i}}-{{\mathbf{D}}^{\left( J-1 \right)}}{{\mathbf{x}}_{i}} \right\|_{2}^{2}\ \ \ \ s.t.\ \ \ {{\left\| {{\mathbf{x}}_{i}} \right\|}_{0}}\le s
        $$
        \item dictionary update：...
    \end{enumerate}
    }
\end{algorithm}

\section*{Just the Equation}

        $$
        \underset{{{\mathbf{x}}_{i}}}{\mathop{\min }}\,\left\| {{\mathbf{y}}_{i}}-{{\mathbf{D}}^{\left( J-1 \right)}}{{\mathbf{x}}_{i}} \right\|_{2}^{2}\ \ \ \ s.t.\ \ \ {{\left\| {{\mathbf{x}}_{i}} \right\|}_{0}}\le s
        $$

\section*{enumerate and Equation}

    \begin{enumerate}[(a)]
    \item sparse coding：problem
    $$
        \underset{{{\mathbf{x}}_{i}}}{\mathop{\min }}\,\left\| {{\mathbf{y}}_{i}}-{{\mathbf{D}}^{\left( J-1 \right)}}{{\mathbf{x}}_{i}} \right\|_{2}^{2}\ \ \ \ s.t.\ \ \ {{\left\| {{\mathbf{x}}_{i}} \right\|}_{0}}\le s
    $$
    \item dictionary update：...
    \end{enumerate}

\end{document}

Please indicate where the middle of the equation should be? (copy the picture above to your computer and use the software paint or similar or a pen if necessary)
I also deleted \\ in the equation.

the equation in the algorithm environment doesn't in the middle

1 Answers1