帮我美化这个表格（主要是关于间距）

Question

使用以下代码：

\documentclass{article}
\usepackage{tabu}
\usepackage{graphics}
\usepackage{booktabs}
\begin{document}
\begin{center}
\resizebox{0.9\linewidth}{!}{%
\setlength\extrarowheight{2pt}
\begin{tabu}{
  >{\bfseries\raggedright}p{0.35\linewidth}   
  >{\raggedright         }p{0.35\linewidth}
  >{\raggedright         }p{0.35\linewidth}  
}
\toprule
\rowfont{\bfseries}
      & Patching  & Small-dictionary fitting \\
\midrule
Rationale for use & remove elements inconvenient to compress & keep only elements inconveient to compress \\
Intended scope of application & minimum necessary & maximum possible \\
Number of elements remaining to compress after application & the full column's length   & less than full column length (hopefully much less) \\
Elements inconveient to compress reside in & the smaller subcolumn & the smaller subcolumn \\
Compression ratio of affected data & very poor (worse than uncompressed) & very good (probably better than rest of data) \\
Potential for overhead & per each patched position & per each original column element \\
Repeat application & useless & relevant, possibly even with same-or-lower width \\
\bottomrule
\end{tabu}
}
\end{center}
\end{document}

我不喜欢的事情：

• 行间距大于单元格间距，使得行看起来好像是断开的，但实际上并没有，反之亦然
• 我宁愿不必手动调整列宽和缩放比例
• 下面有足够的空间\midrule，但上面几乎没有空间\bottomrule

我应该怎么做才能让它看起来更好？（除了我不喜欢的之外，请随意提出建议，包括纯粹的“代码美化”建议。）

Answer 1

避免\resizebox在文本区域中放置表格。

您可以使用X列，而不必猜测宽度。

\documentclass{article}
\usepackage{tabu}
\usepackage{ragged2e}
\usepackage{booktabs}
\usepackage{microtype}

\begin{document}
\begin{center}
\small % if you prefer
\begin{tabu}{
  @{}
  >{\bfseries\RaggedRight}X<{\unskip\strut}
  >{\RaggedRight         }X<{\unskip\strut}
  >{\RaggedRight         }X<{\unskip\strut}
  @{}
}
\toprule
      & \bfseries Patching  & \bfseries Small-dictionary fitting \\
\midrule
Rationale for use &
  remove elements inconvenient to compress &
  keep only elements inconvenient to compress \\
\addlinespace
Intended scope of application &
  minimum necessary &
  maximum possible \\
\addlinespace
Number of elements remaining to compress after application &
  the full column's length &
  less than full column length (hopefully much less) \\
\addlinespace
Elements inconvenient to compress reside in &
  the smaller subcolumn &
  the smaller subcolumn \\
\addlinespace
Compression ratio of affected data &
  very poor (worse than uncompressed) &
  very good (probably better than rest of data) \\
\addlinespace
Potential for overhead &
  per each patched position &
  per each original column element \\
\addlinespace
Repeat application &
  useless &
  relevant, possibly even with same-or-lower width \\
\bottomrule
\end{tabu}
\end{center}
\end{document}

Answer 2

我认为这看起来稍微好一些（但我不知道你的行间距和单元格间距是什么意思）：

\documentclass{article}
\usepackage{tabularx}
\usepackage{graphics}
\usepackage{booktabs}
\begin{document}
\begin{center}
\resizebox{0.9\linewidth}{!}{%
\setlength\extrarowheight{4pt}
\begin{tabularx}{\textwidth}{
  >{\bfseries\raggedright\arraybackslash}X
  >{\raggedright\arraybackslash         }X
  >{\raggedright\arraybackslash         }X
}
\toprule
      & \bfseries Patching  & \bfseries Small-dictionary fitting \\
\midrule
Rationale for use & remove elements inconvenient to compress & keep only elements inconveient to compress \\
Intended scope of application & minimum necessary & maximum possible \\
Number of elements remaining to compress after application & the full column's length   & less than full column length (hopefully much less) \\
Elements inconveient to compress reside in & the smaller subcolumn & the smaller subcolumn \\
Compression ratio of affected data & very poor (worse than uncompressed) & very good (probably better than rest of data) \\
Potential for overhead & per each patched position & per each original column element \\
Repeat application & useless & relevant, possibly even with same-or-lower width \\
\bottomrule
\end{tabularx}
}
\end{center}
\end{document}