## 2 Materials and Methods
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**No.**} & **Feature** & **Description** & **Type** & **Mean \(\pm\) std** \\  & **Label** & & **(Value Range)** & \\ \hline
1 & B & age & Integer & 60.24 \(\pm\) 7.31 \\ \hline
2 & E1 & Type of the operation on the & & Categorical & \\  & & right lung & & \\ \hline
3 & E2 & Type of the operation on the & & Categorical & \\  & & left lung & & \\ \hline
4 & K & BMI (\(\frac{\text{kg}}{\text{m}^{2}}\)) & Float & 26.07 \(\pm\) 1.84 \\ \hline
5 & O & Type of respiratory function & Categorical & \\ \hline
6 & P & COPD (Chronic Obstructive & Float & \\  & & Pulmonary Disease) index & [0.9210, 2.2166] & 1.66 \(\pm\) 0.22 \\ \hline
7 & S & Preoperative FEV1—Preoperative & & \\  & & forced expiratory volume in the & Integer & \\  & & first second (L) & [1570, 4350] & 2656.96 \(\pm\) 510.98 \\ \hline
8 & T & \%—Preoperative FEV1 & & \\  & & volume in the first second in [\%] & Integer & \\
9 & U & & vital capacity (L) & [2040, 6780] & 3968.99 \(\pm\) 872.34 \\ \hline
10 & V & Preoperative VC \%—Preoperative & & \\  & & vital capacity in [\%] & [76, 148] & 109.23 \(\pm\) 15.87 \\ \hline
11 & W & \
\begin{tabular}{c} Preoperative FVC—Preoperative \\ forced vital capacity (L) \\ \end{tabular} &
\begin{tabular}{c} Integer \\ [2010, 5960] \\ \end{tabular} & 3754.05 \(\pm\) 755.19 \\ \hline
12 & X & \
\begin{tabular}{c} Preoperative FVC \%—Preoperative \\ forced vital capacity in [\%] \\ \end{tabular} &
\begin{tabular}{c} Integer \\ [73, 143] \\ \end{tabular} & 107.86 \(\pm\) 15.04 \\ \hline
13 & Y & \
\begin{tabular}{c} Preoperative V Cin \\ vital capacity in inspiration (L) \\ \end{tabular} &
\begin{tabular}{c} Integer \\ [2070, 6020] \\ \end{tabular} & 3822.78 \(\pm\) 794.46 \\ \hline
14 & Z & \%—Preoperative V Cin & & \\  & & & inspiration in [\%] & [76, 143] & 105.51 \(\pm\) 14.20 \\ \hline
15 & AA & Preoperative FEV1 \%/FVC &
\begin{tabular}{c} Float \\ [47.10, 97.36] \\ \end{tabular} & 71.32 \(\pm\) 9.41 \\ \hline
16 & CD & TLC—Total lung capacity (L) & \
\begin{tabular}{c} Integer \\ [4100, 9650] \\ \end{tabular} &
\begin{tabular}{c} 6953.16 \(\pm\) \\ 1220.52 \\ \end{tabular} \\ \hline
17 & CE & TLC \%—Total lung capacity in [\%] &
\begin{tabular}{c} Integer \\ [90, 160] \\ \end{tabular} & 116.27 \(\pm\) 14.41 \\ \hline
18 & CF & RV—Residual volume (L) &
\begin{tabular}{c} Integer \\ [770, 5670] \\ \end{tabular} & 2988.10 \(\pm\) 805.40 \\ \hline
19 & CG & RV \%—Residual volume in [\%] &
\begin{tabular}{c} Integer \\ [45, 292] \\ \end{tabular} & 137.13 \(\pm\) 34.03 \\ \hline
20 & CH & \
\begin{tabular}{c} FRC (ITGV)—Functional residual \\ capacity (L) \\ \end{tabular} &
\begin{tabular}{c} Integer \\ [2090, 6200] \\ \end{tabular} & 4227.72 \(\pm\) 922.76 \\ \hline
21 & CI & \
\begin{tabular}{c} FRC (ITGV) \%—Functional \\ residual capacity in [\%] \\ \end{tabular} &
\begin{tabular}{c} Integer \\ [78, 223] \\ \end{tabular} & 133.67 \(\pm\) 27.32 \\ \hline
22 & CJ & RV/TLC (\% predicted) &
\begin{tabular}{c} Integer \\ [48, 178] \\ \end{tabular} & 109.49 \(\pm\) 20.25 \\ \hline
23 & CK & FRC (ITGV) \% (\% predicted) &
\begin{tabular}{c} Integer \\ [39, 151] \\ \end{tabular} & 107.51 \(\pm\) 18.53 \\ \hline
24 & CY & \
\begin{tabular}{c} Mobility of the right \\ hemidiaphragm measured \\ radiographically (cm) \\ \end{tabular} &
\begin{tabular}{c} Float \\ [0.9, 4.3] \\ \end{tabular} & 4.16 \(\pm\) 1.41 \\ \hline
25 & DB & \
\begin{tabular}{c} Mobility of the left hemidiaphragm \\ measured radiographically (cm) \\ \end{tabular} &
\begin{tabular}{c} Float \\ [0.4, 4.70] \\ \end{tabular} & 4.08 \(\pm\) 1.39 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Feature description. For the feature vector \(X_{i}\), we selected 25 features, omitting ten features expressed in absolute measures, while keeping those same features expressed in relative values.