\BOOKMARK [1][-]{section.1}{前言}{}% 1
\BOOKMARK [1][-]{section.2}{论文的主要内容}{}% 2
\BOOKMARK [1][-]{section.3}{pretraining}{}% 3
\BOOKMARK [2][-]{subsection.3.1}{autoencoder}{section.3}% 4
\BOOKMARK [2][-]{subsection.3.2}{RBM}{section.3}% 5
\BOOKMARK [1][-]{section.4}{unrolling}{}% 6
\BOOKMARK [1][-]{section.5}{fine-tuning}{}% 7