“`” lstm\u5982\u4f55\u6765\u9632\u6b62\u68af\u5ea6\u7206\u70b8\u548c\u68af\u5ea6\u6d88\u5931\u7684\uff1f<\/p>\n
\u9488\u5bf9RNN, \u8981\u89e3\u51b3\u68af\u5ea6\u7206\u70b8\u53ef\u4ee5\u4f7f\u7528\u68af\u5ea6\u88c1\u526a\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\uff0c\u800c\u5bf9\u4e8e\u68af\u5ea6\u6d88\u5931\uff0c\u7531\u4e8e<\/p>\n
\u4f20\u7edf\u7684RNN\u662f\u7528\u8986\u76d6\u7684\u7684\u65b9\u5f0f\u8ba1\u7b97\u72b6\u6001\uff1a <img alt=""S_t = f(S_{t-1}, x_t)"" referrerpolicy=""no-referrer"" src=""https:\/\/www.zhihu.com\/equation?tex=S_t+%3D+f%28S_%7Bt-1%7D%2C+x_t%29""> \uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u6709\u70b9\u7c7b\u4f3c\u4e8e\u590d\u5408\u51fd\u6570\uff0c\u90a3\u4e48\u6839\u636e\u94fe\u5f0f\u6c42\u5bfc\u7684\u6cd5\u5219\uff0c\u590d\u5408\u51fd\u6570\u6c42\u5bfc\uff1a\u8bbef\u548cg\u4e3ax\u7684\u53ef\u5bfc\u51fd\u6570\uff0c\u5219 <img alt=""(f \\circ g)'(x) = f'(g(x))g'(x)"" referrerpolicy=""no-referrer"" src=""https:\/\/www.zhihu.com\/equation?tex=%28f+%5Ccirc+g%29%27%28x%29+%3D+f%27%28g%28x%29%29g%27%28x%29""> \uff0c\u4ed6\u4eec\u662f\u4e00\u79cd\u4e58\u79ef\u7684\u65b9\u5f0f\uff0c\u90a3\u4e48\u5982\u679c\u5bfc\u6570\u90fd\u662f\u5c0f\u6570\u6216\u8005\u90fd\u662f\u5927\u4e8e1\u7684\u6570\u7684\u8bdd\uff0c\u5c31\u4f1a\u4f7f\u5f97\u603b\u7684\u68af\u5ea6\u53d1\u751fvanishing\u6216explosion\u7684\u60c5\u51b5\uff0c\u5f53\u7136\u68af\u5ea6\u7206\u70b8(gradient explosion)\u4e0d\u662f\u4e2a\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u4e00\u822c\u9760\u88c1\u526a\u540e\u7684\u4f18\u5316\u7b97\u6cd5\u5373\u53ef\u89e3\u51b3\uff0c\u6bd4\u5982gradient clipping\uff08\u5982\u679c\u68af\u5ea6\u7684\u8303\u6570\u5927\u4e8e\u67d0\u4e2a\u7ed9\u5b9a\u503c\uff0c\u5c06\u68af\u5ea6\u540c\u6bd4\u6536\u7f29\uff09\uff0c\u4f46\u662f\u68af\u5ea6\u6d88\u5931\u505a\u4e0d\u5230\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u8981\u7528lstm\u4e86\u3002<\/p>\n
\u5728lstm\u4e2d\uff0c\u6211\u4eec\u53d1\u73b0\uff0c\u72b6\u6001S\u662f\u901a\u8fc7\u7d2f\u52a0\u7684\u65b9\u5f0f\u6765\u8ba1\u7b97\u7684\uff0c <img alt=""S_t = \\sum_{\\tau=1}^t \\Delta S_{\\tau}"" referrerpolicy=""no-referrer"" src=""https:\/\/www.zhihu.com\/equation?tex=S_t+%3D+%5Csum_%7B%5Ctau%3D1%7D%5Et+%5CDelta+S_%7B%5Ctau%7D""> \u3002\u90a3\u8fd9\u6837\u7684\u8bdd\uff0c\u5c31\u4e0d\u662f\u4e00\u76f4\u590d\u5408\u51fd\u6570\u7684\u5f62\u5f0f\u4e86\uff0c\u5b83\u7684\u7684\u5bfc\u6570\u4e5f\u4e0d\u662f\u4e58\u79ef\u7684\u5f62\u5f0f\uff0c\u8fd9\u6837\u5c31\u4e0d\u4f1a\u53d1\u751f\u68af\u5ea6\u6d88\u5931\u7684\u60c5\u51b5\u4e86\u3002<\/p>\n
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/img-blog.csdn.net\/201809201645371?watermark\/2\/text\/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjNzcyMA==\/font\/5a6L5L2T\/fontsize\/400\/fill\/I0JBQkFCMA==\/dissolve\/70""><\/p>\n
\u00a0<\/p>\n
\u5982\u679c\u53ea\u662f\u5bf9gru\u548clstm\u6765\u8bf4\u7684\u8bdd\uff0c\u4e00\u65b9\u9762GRU\u7684\u53c2\u6570\u66f4\u5c11\uff0c\u56e0\u800c\u8bad\u7ec3\u7a0d\u5feb\u6216\u9700\u8981\u66f4\u5c11\u7684\u6570\u636e\u6765\u6cdb\u5316\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u5982\u679c\u4f60\u6709\u8db3\u591f\u7684\u6570\u636e\uff0cLSTM\u7684\u5f3a\u5927\u8868\u8fbe\u80fd\u529b\u53ef\u80fd\u4f1a\u4ea7\u751f\u66f4\u597d\u7684\u7ed3\u679c\u3002GRU\u4f5c\u4e3aLSTM\u7684\u4e00\u79cd\u53d8\u4f53\uff0c\u5c06\u5fd8\u8bb0\u95e8\u548c\u8f93\u5165\u95e8\u5408\u6210\u4e86\u4e00\u4e2a\u5355\u4e00\u7684\u66f4\u65b0\u95e8\u3002\u540c\u6837\u8fd8\u6df7\u5408\u4e86\u7ec6\u80de\u72b6\u6001\u548c\u9690\u85cf\u72b6\u6001\uff0c\u52a0\u8bf8\u5176\u4ed6\u4e00\u4e9b\u6539\u52a8\u3002\u6700\u7ec8\u7684\u6a21\u578b\u6bd4\u6807\u51c6\u7684 LSTM \u6a21\u578b\u8981\u7b80\u5355\uff0c\u4e5f\u662f\u975e\u5e38\u6d41\u884c\u7684\u53d8\u4f53\u3002<\/p>\n
<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/img-blog.csdn.net\/20180920211809142?watermark\/2\/text\/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjNzcyMA==\/font\/5a6L5L2T\/fontsize\/400\/fill\/I0JBQkFCMA==\/dissolve\/70""><\/p>\n
\u00a0<\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
“`” lstm\u5982\u4f55\u6765\u9632\u6b62\u68af\u5ea6\u7206\u70b8\u548c\u68af\u5ea6\u6d88\u5931\u7684\uff1f \u9488\u5bf9RNN, \u8981\u89e3\u51b3\u68af\u5ea6\u7206\u70b8\u53ef\u4ee5\u4f7f\u7528 […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-44844","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=44844"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44844\/revisions"}],"predecessor-version":[{"id":44845,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44844\/revisions\/44845"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=44844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=44844"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=44844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}