1\begin{tabular}{lccc}2\toprule3Model & 1-min RV & 5-min ss RV & Realized kernel \\4\midrule5HAR & 0.451 (1.00) & 0.263 (1.00) & 0.238 (1.00) \\6LogHAR & 0.192 (0.42) & 0.189 (0.72) & 0.204 (0.86) \\7LightGBM & 0.218 (0.48) & 0.218 (0.83) & 0.235 (0.99) \\8\bottomrule9\end{tabular}10