在非合并表中居中？

Question

这是我正在处理的片段：

\begin{landscape}
    \begin{table}[hbt!]
        \centering
        \begin{tabularx}{5.75in}%
            {@{} P{1in} P{0.4in} P{0.4in} P{0.5in} P{0.5in} P{0.4in} P{0.4in} P{0.5in} P{0.5in} @{}}
            \toprule
            \multicolumn{1}{c}{\multirow{3}{*}{\textbf{Average Accuracy}}} 
                        & \multicolumn{4}{c}{\textbf{ResNet-50}}                                    & \multicolumn{4}{c}{\textbf{MobileNet-V2}} \tabularnewline
            \cmidrule(lr){2-9}
                        & \multicolumn{2}{c}{Segmentation}      & \multicolumn{2}{c}{Non-Segmentation}  & \multicolumn{2}{c}{Segmentation}      & \multicolumn{2}{c}{Non-Segmentation} \tabularnewline
            \cmidrule(lr){2-9}
                        & \centering SVM    &  \centering KNN   & \centering SVM    &  \centering KNN   & \centering SVM    &  \centering KNN   & \centering SVM    & \centering SVM    &  \centering  KNN \tabularnewline
            \midrule
            Training    & 0.85      & 0.74          & 0.73          & 0.72          & 0.76      & 0.70          & 0.70          & 0.69 \tabularnewline
            Test        & 0.84      & 0.73          & 0.72          & 0.70          & 0.75      & 0.69          & 0.69          & 0.62 \tabularnewline
            \bottomrule
        \end{tabularx}
        \caption{Cassava Disease Detection System Performance Results \parencite{Sedat2021Disease}}
        \label{table:Cassava Disease Detection System Performance Results}
    \end{table}
\end{landscape}

但是，第 3 行居中仅适用于合并单元格，因此我必须手动将非合并单元格的文本居中。但是，我遇到了一个许多人都熟悉的错误，即使最后一列文本居中。有人知道如何修复它吗？非常感谢您的帮助。谢谢！

Answer 1

您的标题和副标题太长：请缩短它们。这样就不需要横向模式了。

\documentclass{article}

\usepackage{booktabs,siunitx}
\usepackage{biblatex}

\begin{document}

\begin{table}[hbtp!]
\centering

\begin{tabular}{
  @{}
  l
  *{8}{S[table-format=1.2]}
  @{}
}
\toprule
\smash{\bfseries\begin{tabular}[t]{@{}l@{}}Average \\ Accuracy\end{tabular}} &
\multicolumn{4}{c}{\textbf{ResNet-50}} &
\multicolumn{4}{c@{}}{\textbf{MobileNet-V2}} \\
\cmidrule(lr){2-5} \cmidrule(l){6-9}
& \multicolumn{2}{c}{S} & \multicolumn{2}{c}{NS}
& \multicolumn{2}{c}{S} & \multicolumn{2}{c@{}}{NS} \\
\cmidrule(lr){2-3} \cmidrule(lr){4-5} \cmidrule(lr){6-7} \cmidrule(l){8-9}
& {SVM} & {KNN} & {SVM} & {KNN} & {SVM} & {KNN} & {SVM} & {KNN} \\
\midrule
Training  & 0.85 & 0.74 & 0.73 & 0.72 & 0.76 & 0.70 & 0.70 & 0.69 \\
Test      & 0.84 & 0.73 & 0.72 & 0.70 & 0.75 & 0.69 & 0.69 & 0.62 \\
\bottomrule
\multicolumn{9}{@{}l@{}}{\strut\footnotesize S: Segmented; NS: Nonsegmented}
\end{tabular}

\caption{Cassava Disease Detection System Performance Results \parencite{Sedat2021Disease}}
\label{table:Cassava Disease Detection System Performance Results}
\end{table}

\end{document}

看到输出后，您可能希望将表格扩展到文本宽度。

\documentclass{article}

\usepackage{booktabs,siunitx}
\usepackage{biblatex}

\begin{document}

\begin{table}[hbtp!]

\setlength{\tabcolsep}{0pt}% leave TeX the spacing

\begin{tabular*}{\textwidth}{
  @{\extracolsep{\fill}}
  l
  *{8}{S[table-format=1.2]}
}
\toprule
\smash{\bfseries\begin{tabular}[t]{@{}l@{}}Average \\ Accuracy\end{tabular}} &
\multicolumn{4}{c}{\textbf{ResNet-50}} &
\multicolumn{4}{c}{\textbf{MobileNet-V2}} \\
\cmidrule{2-5} \cmidrule{6-9}
& \multicolumn{2}{c}{S} & \multicolumn{2}{c}{NS}
& \multicolumn{2}{c}{S} & \multicolumn{2}{c}{NS} \\
\cmidrule{2-3} \cmidrule{4-5} \cmidrule{6-7} \cmidrule{8-9}
& {SVM} & {KNN} & {SVM} & {KNN} & {SVM} & {KNN} & {SVM} & {KNN} \\
\midrule
Training  & 0.85 & 0.74 & 0.73 & 0.72 & 0.76 & 0.70 & 0.70 & 0.69 \\
Test      & 0.84 & 0.73 & 0.72 & 0.70 & 0.75 & 0.69 & 0.69 & 0.62 \\
\bottomrule
\multicolumn{9}{l}{\strut\footnotesize S: Segmented; NS: Nonsegmented}
\end{tabular*}

\caption{Cassava Disease Detection System Performance Results \parencite{Sedat2021Disease}}
\label{table:Cassava Disease Detection System Performance Results}
\end{table}

\end{document}