%參考鏈接???https://www.douban.com/note/665307747/
%代碼對應參考鏈接???https://blog.csdn.net/lanchunhui/article/details/51271824
%mnist相關資料對應鏈接??https://www.douban.com/note/665307747/

%?Version?1.000
%
%?Code?provided?by?Ruslan?Salakhutdinov?and?Geoff?Hinton
%
%?Permission?is?granted?for?anyone?to?copy?use?modify?or?distribute?this
%?program?and?accompanying?programs?and?documents?for?any?purpose?provided
%?this?copyright?notice?is?retained?and?prominently?displayed?along?with
%?a?note?saying?that?the?original?programs?are?available?from?our
%?web?page.
%?The?programs?and?documents?are?distributed?without?any?warranty?express?or
%?implied.??As?the?programs?were?written?for?research?purposes?only?they?have
%?not?been?tested?to?the?degree?that?would?be?advisable?in?any?important
%?application.??All?use?of?these?programs?is?entirely?at?the?user‘s?own?risk.

%?This?program?reads?raw?MNIST?files?available?at?
%?http://yann.lecun.com/exdb/mnist/?
%?and?converts?them?to?files?in?matlab?format?
%?Before?using?this?program?you?first?need?to?download?files:
%?train-images-idx3-ubyte.gz?train-labels-idx1-ubyte.gz?
%?t10k-images-idx3-ubyte.gz?t10k-labels-idx1-ubyte.gz
%?and?gunzip?them.?You?need?to?allocate?some?space?for?this.??

%?This?program?was?originally?written?by?Yee?Whye?Teh?

%?Work?with?test?files?first?
fprintf（1‘You?first?need?to?download?files:\n?train-images-idx3-ubyte.gz\n?train-labels-idx1-ubyte.gz\n?t10k-images-idx3-ubyte.gz\n?t10k-labels-idx1-ubyte.gz\n?from?http://yann.lecun.com/exdb/mnist/\n?and?gunzip?them?\n‘）;?

f?=?fopen（‘t10k-images-idx3-ubyte‘‘r‘）;
[ac