\documentclass[a4paper,10pt]{article}
\usepackage[utf8]{inputenc}

%opening
\title{}
\author{}

\begin{document}

\maketitle

\begin{abstract}

\end{abstract}

\include{1_intro}
\include{2_relwork}
\include{3_method}
\include{4_datasets}
\include{5_results}
\include{6_discussion}
\include{7_conclusion}

\end{document}