[{"title":"( 2 个子文件 31.3MB ) mnist已经转换好的手写数字图片","children":[{"title":"mnist","children":[{"title":"train_images.zip <span style='color:#111;'> 51.47MB </span>","children":null,"spread":false},{"title":"test_images.zip <span style='color:#111;'> 8.58MB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]