alabnii/sciclaimeval-shared-task huggingface dataset:
\documentclass[varwidth=598pt]{standalone}

\usepackage{booktabs} % professional-quality tables
\usepackage{multirow} % multi-row cells in tables
\usepackage{colortbl} % color for tables (\cellcolor, \rowcolor)
\usepackage[table]{xcolor} % enhanced colors for tables
\usepackage{array} % more flexible column formats (often used)
\usepackage{tabularx} % for tables with auto-stretch columns (if used)
\usepackage{graphicx} % for images in tables or figure/table floats
\usepackage{amssymb} % math symbols
\usepackage{amsmath} % math environments
\usepackage{soul} % highlighting (used for colored text/cells)
\usepackage[normalem]{ulem} % underlining, strikethroughs
\usepackage[T1]{fontenc} % font encoding
\usepackage[utf8]{inputenc}% input encoding (legacy, fine for pdflatex)
\usepackage{microtype} % better text appearance
\usepackage{hyperref} % hyperlinks
\usepackage{textcomp} % for extra symbols
\usepackage{enumitem} % for compact lists (if used in table notes)
\usepackage{adjustbox}
\usepackage{tabu}
\usepackage{pifont} % http://ctan.org/pkg/pifont
\usepackage{bbding} % \XSolidBrush
\usepackage{makecell}
\usepackage{arydshln}

\begingroup
\makeatletter
\renewcommand{\fnum@table}{}%
\long\def\@makecaption#1#2{%
\vskip\abovecaptionskip \centering #2\par \vskip\belowcaptionskip }
\makeatother

\begin{document}
\begin{table}
\centering
\begin{adjustbox}
{max width=\textwidth}
\begin{tabular}{lccccccc}
\toprule

\multirow{2}{*}{\textbf{Model}} & \multicolumn{3}{c}{\textbf{Reference-based}} & \multicolumn{4}{c}{\textbf{Reference-free}} \\
\cmidrule(lr){2-4} \cmidrule(lr){5-8} & \textbf{RG-1} & \textbf{RG-2} & \textbf{F-1} & \textbf{PPL} & \textbf{Dist@2} & \textbf{Dist@3} & \textbf{Dist@4} \\
\midrule

C$^{2}$-CRS & \_ & \_ & \_ & \_ & 0.163 & 0.291 & 0.417 \\
UniCRS & \_ & \_ & \_ & \_ & 0.492 & 0.648 & 0.832 \\
RecInDial & \_ & \_ & \_ & \_ & \underline{0.820} & \textbf{1.552} & 0.598 \\
MESE & \_ & \_ & \_ & 12.9 & \textbf{0.822} & 1.152 & 1.313 \\
\hdashline

\textbf{PECRS-small} & \underline{36.28} & \underline{14.77} & \underline{86.04} & \underline{9.89} & 0.745 & \underline{1.462} & \underline{2.132} \\
\textbf{PECRS-medium} & \textbf{36.86} & \textbf{15.27} & \textbf{86.36} & \textbf{8.98} & 0.518 & 0.624 & \textbf{2.154} \\
\bottomrule
\end{tabular}
\end{adjustbox}
\caption{Table 3: Results of conversation task compared with the state-of-the-art
on ReDial.}
\end{table}
\end{document}