Write a significant portion of the report

report/main.tex

@@ -16,14 +16,16 @@
 \usepackage{booktabs}
 \usepackage{multirow,bigdelim}
 \usepackage{float}
+\usepackage{todonotes}
 
 \usepackage{upgreek} %upalpha in Saxena2021 Reference
-
 \usepackage[utf8]{inputenc}
 \usepackage{hyperref}
 \hypersetup{breaklinks=true,colorlinks=true,linkcolor=blue,citecolor=blue,filecolor=magenta,urlcolor=blue}
 
-
+\usepackage{siunitx}
+\usepackage{cleveref}
+\usepackage{csquotes}
 
 
 \usepackage{xcolor}
@@ -31,6 +33,16 @@
 %\newcommand{\comment}[1]{\textcolor{blue}{#1}}
 
 %\newcommand{\WN}[1]{{\color{red} #1}}
+\newcommand{\norm}[1]{\left\lVert#1\right\rVert}
+\newcommand{\cols}{C_\mathrm{OLS}}
+\newcommand{\colr}{C_\mathrm{Ridge}}
+\newcommand{\coll}{C_\mathrm{Lasso}}
+\newcommand{\mse}{\mathrm{MSE}}
+\newcommand{\bias}{\mathrm{Bias}}
+\newcommand{\var}{\mathrm{Var}}
+\newcommand{\E}{\mathbb{E}}
+\newcommand{\N}{N_\mathrm{train}}
+\newcommand{\Nt}{N_{\mathrm{test}}}
 
 \makeatletter
 \def\@bibdataout@aps{%
@@ -72,22 +84,21 @@ apsrev41Control%
 \tableofcontents
 
 
-\section{Introduction} 
+\section{Introduction} \label{sec:introduction}
 \input{chapters/introduction.tex}
 
 
-\section{Methods}
-
+\section{Methods} \label{sec:methods}
 \input{chapters/methods.tex}
 
-\section{Results}
+\section{Results} \label{sec:results}
 \input{chapters/results.tex}
 
-\section{Conclusion}
+\section{Conclusion} \label{sec:conclusion}
 \input{chapters/conclusion.tex}
 
-\section{Perspective}
-\input{chapters/perspective.tex} 
+\section{Perspective} \label{sec:perspective}
+\input{chapters/perspective.tex}
 
 \bibliography{include/sources/references} % add  references to this file
 \end{document}