\begin{frame}[allowframebreaks=1]{result}
\begin{table}[H]
\centering
\begin{longtable}{rlr}
\toprule
classifier & preprocess & error rate(\%) \\
\midrule
LMS & compressed, PCA & 21.52 \\
LMS & compressed, FE & 22.6 \\
LMS & compressed, deskewed, FE & 14.43 \\
LMS & compressed, deskewed, & 12.37 \\
3-NN & compressed & 5.46 \\
3-NN & compressed, deskewed & 4.1 \\
3-NN & compressed, PCA & 4.7 \\
3-NN & compressed, deskewed, PCA & 9.76 \\
\newpage
3-NN & compressed, FE & 9.76 \\
3-NN & compressed, deskewed, FE & 7.03 \\
Adaboost.MH & compressed, PCA & 15.57 \\
Adaboost.MH & compressed, deskewed, PCA & 10.83 \\
Adaboost.MH & compressed, FE & 8.76 \\
Adaboost.MH & compressed, deskewed, FE & 7.24 \\
ANN(50-49-1) & compressed, PCA & 24.96 \\
ANN(50-6-1) & compressed, PCA & 24.59 \\
ANN(50-9-1) & compressed, PCA & 29.38 \\
\newpage
ANN(166-165-1) & compressed, deskewed, FE & 31.49 \\
ANN(166-7-1) & compressed, deskewed, FE & 22.73 \\
ANN(166-15-1) & compressed, deskewed, FE & 28.02 \\
ANN(50-49-1) & compressed, deskewed, PCA & 21.63 \\
ANN(50-6-1) & compressed, deskewed, PCA & 11.37 \\
ANN(50-9-1) & compressed, deskewed, PCA & 23.17 \\
\bottomrule
\caption{error rate}
\label{tab:errRate}%
\end{longtable}%
\end{table}
\end{frame}
我不知道为什么这帧之后会出现一个新的空白帧？如何消除它？我正在使用ctex。