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\begin{document}
\begin{table}
\centering
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\begin{tabular}{@{}cccccc@{}}
\toprule \multirow{2}{*}{Task} & \multirow{2}{*}{ConDA} & \multirow{2}{*}{\begin{tabular}[c]{@{}c@{}}Source\\ Only\end{tabular}} & \multirow{2}{*}{$\Delta$F1} & \multirow{2}{*}{\begin{tabular}[c]{@{}c@{}}ConDA\\ Avg.\end{tabular}} & \multirow{2}{*}{\begin{tabular}[c]{@{}c@{}}Source Only\\ Avg.\end{tabular}} \\
& & & & & \\
\midrule F19 $\rightarrow$ C & 93 & 96 & -3 & \multirow{5}{*}{57.2} & \multirow{5}{*}{\textbf{84.6}} \\
G2X $\rightarrow$ C & 61 & 81 & -20 & & \\
G3 $\rightarrow$ C & 61 & 69 & -8 & & \\
GM $\rightarrow$ C & 22 & 99 & -77 & & \\
X $\rightarrow$ C & 49 & 78 & -29 & & \\
\midrule C $\rightarrow$ F19 & 40 & 73 & -33 & \multirow{5}{*}{41.2} & \multirow{5}{*}{\textbf{54.8}} \\
G2X $\rightarrow$ F19 & 83 & 83 & 0 & & \\
G3 $\rightarrow$ F19 & 62 & 63 & -1 & & \\
GM $\rightarrow$ F19 & 4 & 27 & -23 & & \\
X $\rightarrow$ F19 & 17 & 28 & -11 & & \\
\midrule C $\rightarrow$ G2X & 77 & 77 & 0 & \multirow{5}{*}{74.4} & \multirow{5}{*}{\textbf{86.6}} \\
F19 $\rightarrow$ G2X & 90 & 98 & -8 & & \\
G3 $\rightarrow$ G2X & 73 & 69 & 4 & & \\
GM $\rightarrow$ G2X & 81 & 95 & -14 & & \\
X $\rightarrow$ G2X & 51 & 94 & -43 & & \\
\midrule C $\rightarrow$ G3 & 60 & 81 & -21 & \multirow{5}{*}{64.8} & \multirow{5}{*}{\textbf{83.2}} \\
F19 $\rightarrow$ G3 & 48 & 89 & -41 & & \\
G2X $\rightarrow$ G3 & 87 & 82 & 5 & & \\
GM $\rightarrow$ G3 & 74 & 77 & -3 & & \\
X $\rightarrow$ G3 & 55 & 87 & -32 & & \\
\midrule C $\rightarrow$ GM & 26 & 95 & -69 & \multirow{5}{*}{37.6} & \multirow{5}{*}{\textbf{73.4}} \\
F19 $\rightarrow$ GM & 10 & 68 & -58 & & \\
G2X $\rightarrow$ GM & 66 & 92 & -26 & & \\
G3 $\rightarrow$ GM & 67 & 68 & -1 & & \\
X $\rightarrow$ GM & 19 & 44 & -25 & & \\
\midrule C $\rightarrow$ X & 81 & 94 & -13 & \multirow{5}{*}{81} & \multirow{5}{*}{\textbf{90.2}} \\
F19 $\rightarrow$ X & 77 & 95 & -18 & & \\
G2X $\rightarrow$ X & 87 & 94 & -7 & & \\
G3 $\rightarrow$ X & 73 & 69 & 4 & & \\
GM $\rightarrow$ X & 87 & 99 & -12 & & \\
\bottomrule
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\caption{Table 2: Performance of \textbf{ConDA} on unlabeled target domains.
Source-only model for each task S $\rightarrow$ T refers to zero-shot evaluation
of a model trained on S and evaluated on test set of T. $\Delta$F1 is increase
(or decrease, in a few cases) in F1 scores of the \textbf{ConDA} model over the
source-only model. Avg. scores in \textbf{bold} indicate where ConDA out-performs
the source-only model.}
\end{table}
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