{"id":40697,"date":"2023-12-11T14:51:23","date_gmt":"2023-12-11T06:51:23","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=40697"},"modified":"2023-12-11T14:51:23","modified_gmt":"2023-12-11T06:51:23","slug":"bn%e6%9c%ba%e5%88%b6%ef%bc%8c%e5%85%ac%e5%bc%8f%e5%89%8d%e5%90%91%e5%92%8c%e5%8f%8d%e5%90%91%ef%bc%8cbn%e6%80%8e%e4%b9%88%e8%ae%ad%e7%bb%83%ef%bc%8c%e4%bb%a5%e5%8f%8a%e4%bd%9c%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/bn%e6%9c%ba%e5%88%b6%ef%bc%8c%e5%85%ac%e5%bc%8f%e5%89%8d%e5%90%91%e5%92%8c%e5%8f%8d%e5%90%91%ef%bc%8cbn%e6%80%8e%e4%b9%88%e8%ae%ad%e7%bb%83%ef%bc%8c%e4%bb%a5%e5%8f%8a%e4%bd%9c%e7%94%a8%ef%bc%9f\/","title":{"rendered":"BN\u673a\u5236\uff0c\u516c\u5f0f(\u524d\u5411\u548c\u53cd\u5411)\uff0cBN\u600e\u4e48\u8bad\u7ec3\uff0c\u4ee5\u53ca\u4f5c\u7528\uff1f"},"content":{"rendered":"

“`” BN\u4e0d\u662f\u51ed\u7a7a\u62cd\u8111\u888b\u62cd\u51fa\u6765\u7684\u597d\u70b9\u5b50\uff0c\u5b83\u662f\u6709\u542f\u53d1\u6765\u6e90\u7684\uff1a\u4e4b\u524d\u7684\u7814\u7a76\u8868\u660e\u5982\u679c\u5728\u56fe\u50cf\u5904\u7406\u4e2d\u5bf9\u8f93\u5165\u56fe\u50cf\u8fdb\u884c\u767d\u5316<\/p>\n

<blockquote>\u6240\u8c13\u767d\u5316\uff0c\u5c31\u662f\u5bf9\u8f93\u5165\u6570\u636e\u5206\u5e03\u53d8\u6362\u52300\u5747\u503c\uff0c\u5355\u4f4d\u65b9\u5dee\u7684\u6b63\u6001\u5206\u5e03<\/p><\/blockquote><\/p>\n

<p>\uff08Whiten\uff09\u64cd\u4f5c\u7684\u8bdd,\u90a3\u4e48\u795e\u7ecf\u7f51\u7edc\u4f1a\u8f83\u5feb\u6536\u655b\uff0c\u90a3\u4e48BN\u4f5c\u8005\u5c31\u5f00\u59cb\u63a8\u8bba\u4e86\uff1a\u56fe\u50cf\u662f\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\u7684\u8f93\u5165\u5c42\uff0c\u505a\u767d\u5316\u80fd\u52a0\u5feb\u6536\u655b\uff0c\u90a3\u4e48\u5176\u5b9e\u5bf9\u4e8e\u6df1\u5ea6\u7f51\u7edc\u6765\u8bf4\uff0c\u5176\u4e2d\u67d0\u4e2a\u9690\u5c42\u7684\u795e\u7ecf\u5143\u662f\u4e0b\u4e00\u5c42\u7684\u8f93\u5165\uff0c\u610f\u601d\u662f\u5176\u5b9e\u6df1\u5ea6\u795e\u7ecf\u7f51\u7edc\u7684\u6bcf\u4e00\u4e2a\u9690\u5c42\u90fd\u662f\u8f93\u5165\u5c42\uff0c\u4e0d\u8fc7\u662f\u76f8\u5bf9\u4e0b\u4e00\u5c42\u6765\u8bf4\u800c\u5df2\uff0c\u90a3\u4e48\u80fd\u4e0d\u80fd\u5bf9\u6bcf\u4e2a\u9690\u5c42\u90fd\u505a\u767d\u5316\u5462\uff1f\u8fd9\u5c31\u662f\u542f\u53d1BN\u4ea7\u751f\u7684\u539f\u521d\u60f3\u6cd5\uff0c\u800cBN\u4e5f\u786e\u5b9e\u5c31\u662f\u8fd9\u4e48\u505a\u7684\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u5bf9\u6df1\u5c42\u795e\u7ecf\u7f51\u7edc\u6bcf\u4e2a\u9690\u5c42\u795e\u7ecf\u5143\u7684\u6fc0\u6d3b\u503c\u505a\u7b80\u5316\u7248\u672c\u7684\u767d\u5316\u64cd\u4f5c\u3002<\/p>\n

BN\u7684\u57fa\u672c\u601d\u60f3\u5176\u5b9e\u76f8\u5f53\u76f4\u89c2\uff1a\u56e0\u4e3a\u6df1\u5c42\u795e\u7ecf\u7f51\u7edc\u5728\u505a\u975e\u7ebf\u6027\u53d8\u6362\u524d\u7684\u6fc0\u6d3b\u8f93\u5165\u503c\uff08\u5c31\u662f\u90a3\u4e2ax=WU+B\uff0cU\u662f\u8f93\u5165\uff09\u968f\u7740\u7f51\u7edc\u6df1\u5ea6\u52a0\u6df1\u6216\u8005\u5728\u8bad\u7ec3\u8fc7\u7a0b\u4e2d\uff0c\u5176\u5206\u5e03\u9010\u6e10\u53d1\u751f\u504f\u79fb\u6216\u8005\u53d8\u52a8\uff0c\u4e4b\u6240\u4ee5\u8bad\u7ec3\u6536\u655b\u6162\uff0c\u4e00\u822c\u662f\u6574\u4f53\u5206\u5e03\u9010\u6e10\u5f80\u975e\u7ebf\u6027\u51fd\u6570\u7684\u53d6\u503c\u533a\u95f4\u7684\u4e0a\u4e0b\u9650\u4e24\u7aef\u9760\u8fd1\uff08\u5bf9\u4e8eSigmoid\u51fd\u6570\u6765\u8bf4\uff0c\u610f\u5473\u7740\u6fc0\u6d3b\u8f93\u5165\u503cWU+B\u662f\u5927\u7684\u8d1f\u503c\u6216\u6b63\u503c\uff09\uff0c\u6240\u4ee5\u8fd9\u5bfc\u81f4\u540e\u5411\u4f20\u64ad\u65f6\u4f4e\u5c42\u795e\u7ecf\u7f51\u7edc\u7684\u68af\u5ea6\u6d88\u5931\u3002<\/p>\n

\u8fd9\u662f\u8bad\u7ec3\u6df1\u5c42\u795e\u7ecf\u7f51\u7edc\u6536\u655b\u8d8a\u6765\u8d8a\u6162\u7684\u672c\u8d28\u539f\u56e0\uff0c\u800cBN\u5c31\u662f\u901a\u8fc7\u4e00\u5b9a\u7684\u89c4\u8303\u5316\u624b\u6bb5\uff0c\u628a\u6bcf\u5c42\u795e\u7ecf\u7f51\u7edc\u4efb\u610f\u795e\u7ecf\u5143\u8fd9\u4e2a\u8f93\u5165\u503c\u7684\u5206\u5e03\u5f3a\u884c\u62c9\u56de\u5230\u5747\u503c\u4e3a0\u65b9\u5dee\u4e3a1\u7684\u6807\u51c6\u6b63\u6001\u5206\u5e03\uff0c\u5176\u5b9e\u5c31\u662f\u628a\u8d8a\u6765\u8d8a\u504f\u7684\u5206\u5e03\u5f3a\u5236\u62c9\u56de\u6bd4\u8f83\u6807\u51c6\u7684\u5206\u5e03\uff0c\u8fd9\u6837\u4f7f\u5f97\u6fc0\u6d3b\u8f93\u5165\u503c\u843d\u5728\u975e\u7ebf\u6027\u51fd\u6570\u5bf9\u8f93\u5165\u6bd4\u8f83\u654f\u611f\u7684\u533a\u57df\uff0c\u8fd9\u6837\u8f93\u5165\u7684\u5c0f\u53d8\u5316\u5c31\u4f1a\u5bfc\u81f4\u635f\u5931\u51fd\u6570\u8f83\u5927\u7684\u53d8\u5316\uff0c\u610f\u601d\u662f\u8fd9\u6837\u8ba9\u68af\u5ea6\u53d8\u5927\uff0c\u907f\u514d\u68af\u5ea6\u6d88\u5931\u95ee\u9898\u4ea7\u751f\uff0c\u800c\u4e14\u68af\u5ea6\u53d8\u5927\u610f\u5473\u7740\u5b66\u4e60\u6536\u655b\u901f\u5ea6\u5feb\uff0c\u80fd\u5927\u5927\u52a0\u5feb\u8bad\u7ec3\u901f\u5ea6\u3002<\/p>\n

\u5176\u5b9e\u4e00\u53e5\u8bdd\u5c31\u662f\uff1a\u5bf9\u4e8e\u6bcf\u4e2a\u9690\u5c42\u795e\u7ecf\u5143\uff0c\u628a\u9010\u6e10\u5411\u975e\u7ebf\u6027\u51fd\u6570\u6620\u5c04\u540e\u5411\u53d6\u503c\u533a\u95f4\u6781\u9650\u9971\u548c\u533a\u9760\u62e2\u7684\u8f93\u5165\u5206\u5e03\u5f3a\u5236\u62c9\u56de\u5230\u5747\u503c\u4e3a0\u65b9\u5dee\u4e3a1\u7684\u6bd4\u8f83\u6807\u51c6\u7684\u6b63\u6001\u5206\u5e03\uff0c\u4f7f\u5f97\u975e\u7ebf\u6027\u53d8\u6362\u51fd\u6570\u7684\u8f93\u5165\u503c\u843d\u5165\u5bf9\u8f93\u5165\u6bd4\u8f83\u654f\u611f\u7684\u533a\u57df\uff0c\u4ee5\u6b64\u907f\u514d\u68af\u5ea6\u6d88\u5931\u95ee\u9898\u3002\u56e0\u4e3a\u68af\u5ea6\u4e00\u76f4\u90fd\u80fd\u4fdd\u6301\u6bd4\u8f83\u5927\u7684\u72b6\u6001\uff0c\u6240\u4ee5\u5f88\u660e\u663e\u5bf9\u795e\u7ecf\u7f51\u7edc\u7684\u53c2\u6570\u8c03\u6574\u6548\u7387\u6bd4\u8f83\u9ad8\uff0c\u5c31\u662f\u53d8\u52a8\u5927\uff0c\u5c31\u662f\u8bf4\u5411\u635f\u5931\u51fd\u6570\u6700\u4f18\u503c\u8fc8\u52a8\u7684\u6b65\u5b50\u5927\uff0c\u4e5f\u5c31\u662f\u8bf4\u6536\u655b\u5730\u5feb\u3002\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u9053\u7406\u5f88\u6df1\u523b\u3002<\/p>\n

\u5c31\u662f\u8bf4\u7ecf\u8fc7BN\u540e\uff0c\u76ee\u524d\u5927\u90e8\u5206Activation\u7684\u503c\u843d\u5165\u975e\u7ebf\u6027\u51fd\u6570\u7684\u7ebf\u6027\u533a\u5185\uff0c\u5176\u5bf9\u5e94\u7684\u5bfc\u6570\u8fdc\u79bb\u5bfc\u6570\u9971\u548c\u533a\uff0c\u8fd9\u6837\u6765\u52a0\u901f\u8bad\u7ec3\u6536\u655b\u8fc7\u7a0b\u3002<\/p>\n

\u516c\u5f0f\uff1a<\/p>\n

<img src=""http:\/\/res.mianshigee.com\/upload\/article\/20200108\/71cf834b-6773-449a-9f84-77151e4c7be6.jpg"" style=""width: 567.998px;""><br><\/p>\n

\u4f5c\u7528\uff1a<\/p>\n

BN\uff08Batch Normalization\uff09\u5c42\u7684\u4f5c\u7528\uff081\uff09\u52a0\u901f\u6536\u655b\uff0c\u9632\u6b62\u68af\u5ea6\u6d88\u5931<\/p>\n

\uff082\uff09\u63a7\u5236\u8fc7\u62df\u5408\uff0c\u53ef\u4ee5\u5c11\u7528\u6216\u4e0d\u7528Dropout\u548c\u6b63\u5219<\/p>\n

\uff083\uff09\u964d\u4f4e\u7f51\u7edc\u5bf9\u521d\u59cb\u5316\u6743\u91cd\u4e0d\u654f\u611f<\/p>\n

\uff084\uff09\u5141\u8bb8\u4f7f\u7528\u8f83\u5927\u7684\u5b66\u4e60\u7387<\/p>\n

\u5728\u6bcf\u4e00\u5c42\u8f93\u5165\u7684\u65f6\u5019\uff0c\u52a0\u4e2aBN\u9884\u5904\u7406\u64cd\u4f5c\u3002BN\u5e94\u4f5c\u7528\u5728\u975e\u7ebf\u6027\u6620\u5c04\u524d\uff0c\u5373\u5bf9x=Wu+b\u505a\u89c4\u8303\u5316\u3002\u5728BN\u4e2d\uff0c\u662f\u901a\u8fc7\u5c06activation\u89c4\u8303\u4e3a\u5747\u503c\u548c\u65b9\u5dee\u4e00\u81f4\u7684\u624b\u6bb5\u4f7f\u5f97\u539f\u672c\u4f1a\u51cf\u5c0f\u7684activation\u7684scale\u53d8\u5927\u3002\u53ef\u4ee5\u8bf4\u662f\u4e00\u79cd\u66f4\u6709\u6548\u7684local response normalization\u65b9\u6cd5\u3002<\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” BN\u4e0d\u662f\u51ed\u7a7a\u62cd\u8111\u888b\u62cd\u51fa\u6765\u7684\u597d\u70b9\u5b50\uff0c\u5b83\u662f\u6709\u542f\u53d1\u6765\u6e90\u7684\uff1a\u4e4b\u524d\u7684\u7814\u7a76\u8868\u660e\u5982\u679c\u5728\u56fe\u50cf\u5904 […]<\/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-40697","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40697","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=40697"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40697\/revisions"}],"predecessor-version":[{"id":40698,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40697\/revisions\/40698"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=40697"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=40697"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=40697"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}