我有一张表格，我希望其第一列水平居中，单元格如下：
“带注释的消息”
“注释流程”
“提供指南”
“注释者协议”
有两条线，但我遇到了问题。
我对乳胶表格还不熟悉......
另外，我不知道为什么表格没有居中......
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}
\begin{table}[H]
\begin{tabular}{P{2.5cm}|P{2.5cm}|P{2.5cm}|P{2.5cm}|P{2.5cm}|P{2.5cm}}
\hline
\multirow{3}{*}{\textbf{Paper}} & \textbf{\cite{Davidson2017}} & \textbf{\cite{Nobata2017}} & \textbf{\cite{Zhang17}} & \textbf{\cite{Warner}} & \textbf{\cite{Kwok2013}}\\
\hline
\multirow{5}{*}{\textbf{Collection}} & Twitter search engine with words present in Hatebase.org. lexicon. & Comments posted on Yahoo! Finance and News. & Twitter seach engine about refugees and Muslims & Yahoo! News and offensive websites id by AJC. & Twitter accounts known to be racist.\\
\hline
\multirow{2}{*}{\textbf{Annotated messages}} & 25.000 tweets & 2.000 comments & 2.435 tweets & 1.000 paragraphs & 24.582 tweets\\
\hline
\multirow{4}{*}{\textbf{Annotation Process}} & At least three CrowdFlower workers. & Mechanical Turk experiment. & unanimous agreement between two researchers & Three annotators & annotated by authors \\
\hline
\multirow{2}{*}{\textbf{Provided Guidelines}} & yes & yes & no & no & no\\
\hline
\multirow{3}{*}{\textbf{Annotator Agreement}} & Inter-coder agreement of 92\% & Fleiss's Kappa of 0.401 & unanimous agreement & Fleiss's Kappa of 0.63 & -\\
\hline
\end{tabular}
\smallskip
\caption{Dataset annotation process used in other studies}
\end{table}
答案1
multirow对于此表，您不需要：只需使用tabularx，将X列类型重新定义为X{#1}。
无关：您应该避免使用H安置字母——它通常会导致页面上出现大片空白。
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[showframe]{geometry}
\usepackage{tabularx, float}
\begin{document}
\renewcommand{\tabularxcolumn}[1]{>{\centering\arraybackslash}m{#1}}
\begin{table}[H]
\centering
\setlength{\extrarowheight}{2pt}
\begin{tabularx}{\linewidth}{>{\bfseries}X|*{5}{X|}}
\hline
Paper & \textbf{\cite{Davidson2017}} & \textbf{\cite{Nobata2017}} & \textbf{\cite{Zhang17}} & \textbf{\cite{Warner}} & \textbf{\cite{Kwok2013}}\\
\hline
Collection & Twitter search engine with words present in Hatebase.org. lexicon. & Comments posted on Yahoo! Finance and News. & Twitter seach engine about refugees and Muslims & Yahoo! News and offensive websites id by AJC. & Twitter accounts known to be racist.\\
\hline
Annotated messages & 25.000 tweets & 2.000 comments & 2.435 tweets & 1.000 paragraphs & 24.582 tweets\\
\hline
Annotation Process & At least three CrowdFlower workers. & Mechanical Turk experiment. & unanimous agreement between two researchers & Three annotators & annotated by authors \\
\hline
Provided Guidelines & yes & yes & no & no & no\\
\hline
Annotator Agreement & Inter-coder agreement of 92\% & Fleiss's Kappa of 0.401 & unanimous agreement & Fleiss's Kappa of 0.63 & – \\
\hline
\end{tabularx}
\smallskip
\caption{Dataset annotation process used in other studies}
\end{table}
\end{document}
