function?rbm?=?rbmtrain（rbm?x?opts）
????assert（isfloat（x）?‘x?must?be?a?float‘）;
????assert（all（x（:）>=0）?&&?all（x（:）<=1）?‘all?data?in?x?must?be?in?[0:1]‘）;
????m?=?size（x?1）;
????numbatches?=?m?/?opts.batchsize;
????
????assert（rem（numbatches?1）?==?0?‘numbatches?not?integer‘）;

????for?i?=?1?:?opts.numepochs
????????kk?=?randperm（m）;
????????err?=?0;
????????for?l?=?1?:?numbatches
????????????batch?=?x（kk（（l?-?1）?*?opts.batchsize?+?1?:?l?*?opts.batchsize）?:）;
????????????
????????????v1?=?batch;
????????????h1?=?sigmrnd（repmat（rbm.c‘?opts.batchsize?1）?+?v1?*?rbm.W‘）;
????????????v2?=?sigmrnd（repmat（rbm.b‘?opts.batchsize?1）?+?h1?*?rbm.W）;
????????????h2?=?sigm（repmat（rbm.c‘?opts.batchsize?1）?+?v2?*?rbm.W‘）;

????????????c1?=?h1‘?*?v1;
????????????c2?=?h2‘?*?v2;

????????????rbm.vW?=?rbm.momentum?*?rbm.vW?+?rbm.alpha?*?（c1?-?c2）?????/?opts.batchsize;
????????????rbm.vb?=?rbm.momentum?*?rbm.vb?+?rbm.alpha?*?sum（v1?-?v2）‘?/?opts.batchsize;
????????????rbm.vc?=?rbm.momentum?*?rbm.vc?+?rbm.alpha?*?sum（h1?-?h2）‘?/?opts.batchsize;

????????????rbm.W?=?rbm.W?+?rbm.vW;
????????????rbm.b?=?rbm.b?+?rbm.vb;
????????????rbm.c?=?rbm.c?+?rbm.vc;

????????????err?=?err?+?sum（sum（（v1?-?v2）?.^?2））?/?opts.batchsize;
????????end
????????
????????disp（[‘epoch?‘?num2str（i）?‘/‘?num2str（opts.numepochs）??‘.?Average?reconstruction?error?is:?‘?num2str（err?/?numbatches）]）;
????????
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1401??2020-09-26?16:52??rbmtrain.m