如題，報錯資訊如下：

Warning: The following error was caught while executing 'caffe.Net' class destructor:
Error using caffe_
Usage: caffe_('delete_solver', hNet)

Error in caffe.Net/delete (line 72)
      caffe_('delete_net', self.hNet_self);

報錯原因：舊一點版本的caffe的matlab介面中的函式Net.m源程式有bug。

When constructing a network, the internal object initialization of Matlab actually creates a new network and replaces the already instantiated object, causing an empty network to be deleted. This PR checks if the caffe net pointer is defined before calling the net-deletion-function in caffe_.cpp.  （ 取自https://github.com/BVLC/caffe/pull/5588

修復方法：重新安裝新版本的caffe，或者進入目錄，在對應的函式處進行修改：

    function delete (self)   %caffe重新建立網路時會自動刪除之前建立的網路
      if self.isvalid  （或者~isempty(self.hNet_self)）
      caffe_('delete_net', self.hNet_self);
      end
    end