How to correct this table text?

Question

I am working on a table, the code is:
begin{table}[t!]
small
    centering
    resizebox{0.45textwidth}{!}{%
    begin{tabular}{@{}l|r@{ }r@{ }|r@{ }r@{ }|rrr@{ }}
    toprule
    {} & multicolumn{2}{c|}{bf Without  
Context} & multicolumn{2}{c|}{bf Wiki} & multicolumn{2}{c}{bf Wiki 2}
    midrule
    bf Model & multicolumn{1}{c}{bf Test} &  multicolumn{1}{c|}{bf Dev} & multicolumn{1}{c}{bf Test} & multicolumn{1}{c|}{bf Dev} & multicolumn{1}{c}{bf Test} & multicolumn{1}{c}{bf Dev}
    midrule
    Albanian         &         565  &   755 &        1,194 &  311 &        1,194 &  311
    Arabic           &           1,194  &   562 &            1,194 &  1,194   &        1,194 &  311
    Bulgarian        &       1,100  & 1,472 &        2,344 &  593 &        1,194 &  311
    bottomrule
    end{tabular}
    }
    caption{Number of examples in the data splits based on the experimental setup. 
    }
    label{tab:datasplits}
end{table}

Which looks like this:

But as it is visible that in dev set the values and Dev name is not aligned. How to make them aligh?

js bibra · Accepted Answer

the tabular columns are right aligned but Dev is center aligned therefore the mis alignment
multicolumn{1}{c|}{bf Dev} needs to be multicolumn{1}{r|}{bf Dev}

to remove column space make use of @{} in the line of code between Test and Dev
begin{tabular}{@{}l@{}r@{}r@{}r@{}r@{}|rrr@{}}

as rightly pointed out by David Carlisle in comments -- vertical lines should be avoided otherwise you will notice gaps since you are using toprule/midrule with the booktabs  package

Mico · Answer

I would simplify and streamline the look of the table by getting rid of all vertical rules, all bf statements, all multicolumn{1}{c}{...} wrappers, and the resizebox instruction. I'd also abbreviate "Without" as "w/o".

documentclass{article} % select a suitable document class
usepackage{booktabs}
begin{document}
begin{table}[t!]
small
centering
    begin{tabular}{@{} l rrrrrr @{}}
    toprule
    {} & multicolumn{2}{c}{w/o Context} 
       & multicolumn{2}{c}{Wiki} 
       & multicolumn{2}{c@{}}{Wiki 2}
    cmidrule(lr){2-3} cmidrule(lr){4-5} cmidrule(l){6-7}
    Model & Test & Dev & Test & Dev & Test & Dev 
    midrule
    Albanian         &   565  &   755 &  1,194 &   311 & 1,194 & 311
    Arabic           & 1,194  &   562 &  1,194 & 1,194 & 1,194 & 311
    Bulgarian        & 1,100  & 1,472 &  2,344 &   593 & 1,194 & 311
    bottomrule
    end{tabular}
    caption{Number of examples in the data splits based on the experimental setup.}
    label{tab:datasplits}
end{table}
end{document}

How to correct this table text?

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