{"id":2692,"date":"2026-09-04T22:46:26","date_gmt":"2026-09-04T14:46:26","guid":{"rendered":"http:\/\/blog.xtaa.cn\/?p=2692"},"modified":"2026-09-05T00:16:54","modified_gmt":"2026-09-04T16:16:54","slug":"%e6%8a%95%e5%bd%b1%e7%9f%a9%e9%98%b5-%e6%98%af%e5%a6%82%e4%bd%95%e5%b7%a5%e4%bd%9c%e7%9a%84%ef%bc%8c%e5%9c%a8%e6%95%b0%e5%ad%97%e6%88%96%e8%80%85%e5%87%a0%e4%bd%95%e6%88%96%e8%80%85%e5%85%b6%e5%ae%83","status":"publish","type":"post","link":"http:\/\/blog.xtaa.cn\/index.php\/2026\/09\/04\/%e6%8a%95%e5%bd%b1%e7%9f%a9%e9%98%b5-%e6%98%af%e5%a6%82%e4%bd%95%e5%b7%a5%e4%bd%9c%e7%9a%84%ef%bc%8c%e5%9c%a8%e6%95%b0%e5%ad%97%e6%88%96%e8%80%85%e5%87%a0%e4%bd%95%e6%88%96%e8%80%85%e5%85%b6%e5%ae%83\/","title":{"rendered":"\u6295\u5f71\u77e9\u9635 \u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff0c\u5728\u6570\u5b57\u6216\u8005\u51e0\u4f55\u6216\u8005\u5176\u5b83\u65b9\u9762\u80fd\u66f4\u5f62\u50cf\u7684\u8bf4\u660e\u7406\u89e3\u5417\uff1f"},"content":{"rendered":"\n<p>\u4e0a\u6587\u6211\u4eec\u8c08\u5230Q\u3001K\u3001V\u662f\u8fd9\u4e2a\u5411\u91cf\u5206\u522b\u4e58\u4ee5\u4e09\u5957\u4e0d\u540c\u7684&#8221;\u6295\u5f71\u77e9\u9635&#8221;\u4e4b\u540e\u53d8\u51fa\u6765\u7684\u4e09\u4e2a\u5206\u8eab\uff01&#8221;\u6295\u5f71\u77e9\u9635&#8221;\u542c\u8d77\u6765\u5f88\u6570\u5b66\uff0c\u4f46\u672c\u8d28\u4e0a\u5c31\u662f\u4e00\u4e2a\u200c<strong>&#8220;\u53d8\u5f62\u955c&#8221;<\/strong>\u200c\u2014\u2014\u628a\u4e00\u4e2a\u4e1c\u897f\u4ece\u4e00\u79cd\u6837\u5b50\u53d8\u6210\u53e6\u4e00\u79cd\u6837\u5b50\u3002\u6211\u4ece\u200c<strong>\u751f\u6d3b\u6bd4\u55bb \u2192 \u51e0\u4f55\u76f4\u89c9 \u2192 \u6570\u5b57\u4f8b\u5b50 \u2192 Transformer\u4e2d\u7684QKV\u6295\u5f71<\/strong>\u200c\u56db\u5c42\u7ed9\u4f60\u8bb2\u900f\u3002<br><strong>\u4e5f\u53eb\u7ebf\u6027\u53d8\u6362\u77e9\u9635<\/strong>\uff0c\u7ebf\u6027\u53d8\u6362 = \u52a0\u6743\u6df7\u5408<br><strong>\u7ed9\u8f93\u5165\u5411\u91cf\u7684\u6bcf\u4e2a\u7ef4\u5ea6\u5206\u914d\u4e00\u4e2a\u6743\u91cd\uff0c\u91cd\u65b0\u7ec4\u5408\u51fa\u65b0\u7684\u7ef4\u5ea6\u3002<\/strong><br>\u51e0\u4f55\u7406\u89e3\uff1a\u7ebf\u6027\u53d8\u6362\u5c31\u662f&#8221;\u7a7a\u95f4\u53d8\u5f62&#8221;<\/p>\n\n\n\n<p>\u200c<strong>\u770b\u56fe\u7406\u89e3\uff1a<\/strong>\u200c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5de6\u8fb9\uff1a\u539f\u59cb\u7684\u5411\u91cf\u7a7a\u95f4\uff08\u6bd4\u5982\u8bcd\u5411\u91cf\u7a7a\u95f4\uff09\uff0c\u6bcf\u4e2a\u70b9\u4ee3\u8868\u4e00\u4e2a\u8bcd<\/li>\n\n\n\n<li>\u4e2d\u95f4\uff1a\u7ecf\u8fc7\u7ebf\u6027\u53d8\u6362\u540e\uff0c\u7a7a\u95f4\u88ab\u65cb\u8f6c\u3001\u62c9\u4f38\u3001\u538b\u6241\u4e86<\/li>\n\n\n\n<li>\u53f3\u8fb9\uff1a\u4e0d\u540c\u7684\u7ebf\u6027\u53d8\u6362 = \u4e0d\u540c\u7684\u53d8\u5f62\u65b9\u5f0f = \u770b\u5230\u4e0d\u540c\u7684\u4fe1\u606f<\/li>\n<\/ul>\n\n\n\n<p>\u200c<strong>\u7ebf\u6027\u53d8\u6362\u77e9\u9635\u5c31\u662f&#8221;\u7a7a\u95f4\u53d8\u5f62\u8bf4\u660e\u4e66&#8221;<\/strong>\u200c\u2014\u2014\u544a\u8bc9\u4f60\u5f80\u54ea\u4e2a\u65b9\u5411\u8f6c\u3001\u62c9\u591a\u957f\u3001\u538b\u591a\u6241\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u751f\u6d3b\u6bd4\u55bb\uff1a\u6295\u5f71\u77e9\u9635\u5c31\u662f&#8221;\u4e13\u5c5e\u6ee4\u955c&#8221;<\/h2>\n\n\n\n<p>\u60f3\u8c61\u4f60\u624b\u673a\u91cc\u7684\u62cd\u7167\u6ee4\u955c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200c<strong>\u8f93\u5165<\/strong>\u200c\uff1a\u4f60\u62cd\u7684\u539f\u56fe\uff08\u9ad8\u5206\u8fa8\u7387\u3001\u4e09\u539f\u8272\u3001\u51e0\u767e\u4e07\u50cf\u7d20\uff09<\/li>\n\n\n\n<li>\u200c<strong>\u6ee4\u955c\uff08\u6295\u5f71\u77e9\u9635\uff09<\/strong>\u200c\uff1a\u4e00\u5957\u89c4\u5219\u2014\u2014\u7ea2\u8272\u8c03\u591a\u4e00\u70b9\uff1f\u4eae\u5ea6\u538b\u6697\uff1f\u6a21\u7cca\u5904\u7406\uff1f<\/li>\n\n\n\n<li>\u200c<strong>\u8f93\u51fa<\/strong>\u200c\uff1a\u5904\u7406\u540e\u7684\u7167\u7247\uff08\u53ef\u80fd\u5206\u8fa8\u7387\u53d8\u4e86\u3001\u989c\u8272\u53d8\u4e86\u3001\u98ce\u683c\u53d8\u4e86\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u200c<strong>\u6295\u5f71\u77e9\u9635 = \u4e00\u5957\u56fa\u5b9a\u7684&#8221;\u53d8\u5f62\u89c4\u5219&#8221;\uff0c\u628a\u4e00\u7ec4\u6570\u5b57\uff08\u5411\u91cf\uff09\u53d8\u6210\u53e6\u4e00\u7ec4\u6570\u5b57\u3002<\/strong>\u200c<\/p>\n\n\n\n<p>\u5728Transformer\u91cc\uff0c\u6bcf\u4e2a\u8bcd\u5411\u91cf\u8fdb\u6765\u540e\uff0c\u4f1a\u7ecf\u8fc7\u200c<strong>\u4e09\u5957\u4e0d\u540c\u7684\u6ee4\u955c<\/strong>\u200c\uff0c\u5206\u522b\u53d8\u6210Q\u3001K\u3001V\u2014\u2014\u5c31\u50cf\u540c\u4e00\u5f20\u7167\u7247\uff0c\u5206\u522b\u5957\u4e0a&#8221;\u67e5\u8be2\u6ee4\u955c&#8221;&#8221;\u94a5\u5319\u6ee4\u955c&#8221;&#8221;\u5185\u5bb9\u6ee4\u955c&#8221;\uff0c\u53d8\u51fa\u4e09\u5f20\u4e0d\u540c\u7684\u56fe\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u51e0\u4f55\u76f4\u89c9\uff1a\u6295\u5f71\u5c31\u662f&#8221;\u6362\u4e2a\u89d2\u5ea6\u770b\u4e16\u754c&#8221;<\/h2>\n\n\n\n<p>\u6211\u753b\u4e86\u4e24\u5f20\u56fe\uff0c\u4ece\u51e0\u4f55\u89d2\u5ea6\u7406\u89e3\u6295\u5f71\uff1a<\/p>\n\n\n\n<p>\u200c<strong>\u770b\u56fe\u7406\u89e3\u5de6\u8fb9\uff08\u964d\u7ef4\u6295\u5f71\uff09\uff1a<\/strong>\u200c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u4e2a3D\u7684\u7269\u4f53\uff08\u4e09\u7ef4\u5411\u91cf\uff09\uff0c\u88ab\u4e00\u76cf\u706f\u7167\u5230\u5899\u4e0a\uff0c\u5f62\u62102D\u7684\u5f71\u5b50\uff08\u4e8c\u7ef4\u5411\u91cf\uff09<\/li>\n\n\n\n<li>\u5899\u4e0a\u7684\u5f71\u5b50\u5c31\u662f&#8221;\u6295\u5f71&#8221;\u7684\u7ed3\u679c\u2014\u2014\u4fe1\u606f\u53d8\u5c11\u4e86\uff0c\u4f46\u6838\u5fc3\u5f62\u72b6\u8fd8\u5728<\/li>\n\n\n\n<li>\u200c<strong>\u6295\u5f71\u77e9\u9635\u5c31\u662f&#8221;\u5899\u7684\u89d2\u5ea6&#8221;+&#8221;\u706f\u7684\u4f4d\u7f6e&#8221;\uff0c\u51b3\u5b9a\u4e86\u5f71\u5b50\u957f\u4ec0\u4e48\u6837<\/strong>\u200c<\/li>\n<\/ul>\n\n\n\n<p>\u200c<strong>\u53f3\u8fb9\uff08\u4efb\u610f\u7ef4\u5ea6\u53d8\u6362\uff09\uff1a<\/strong>\u200c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6295\u5f71\u4e0d\u4e00\u5b9a\u662f\u964d\u7ef4\uff0c\u4e5f\u53ef\u4ee5\u662f\u5347\u7ef4\uff08\u4ece2D\u53d83D\uff09\uff0c\u6216\u8005\u540c\u7ef4\u5ea6\u65cb\u8f6c\/\u62c9\u4f38<\/li>\n\n\n\n<li>\u5c31\u50cf\u4f60\u7528\u653e\u5927\u955c\u770b\u4e1c\u897f\u2014\u2014\u8fd8\u662f\u540c\u4e00\u4e2a\u4e1c\u897f\uff0c\u4f46&#8221;\u8868\u73b0\u5f62\u5f0f&#8221;\u53d8\u4e86<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u6570\u5b57\u4f8b\u5b50\uff1a\u4e00\u7b97\u5c31\u61c2<\/h2>\n\n\n\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u8f93\u5165\u5411\u91cf \u200c<strong>x = [3, 4]<\/strong>\u200c\uff08\u4e8c\u7ef4\uff0c\u5c31\u50cf\u5e73\u9762\u4e0a\u4e00\u4e2a\u70b9\uff09\uff0c\u6211\u4eec\u60f3\u7528\u4e00\u4e2a\u6295\u5f71\u77e9\u9635\u628a\u5b83\u53d8\u6210\u4e09\u7ef4\u7684\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6295\u5f71\u77e9\u9635 W\uff082\u884c3\u5217\uff09\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">text<code>W = [ 1  0  2 ]\n    [ 0  1 -1 ]\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8ba1\u7b97\u8fc7\u7a0b\uff08\u5c31\u662f\u5411\u91cf \u00d7 \u77e9\u9635\uff09\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-preformatted\">text<code>\u8f93\u51fa\u7684\u7b2c1\u4e2a\u6570 = 3\u00d71 + 4\u00d70 = 3\n\u8f93\u51fa\u7684\u7b2c2\u4e2a\u6570 = 3\u00d70 + 4\u00d71 = 4\n\u8f93\u51fa\u7684\u7b2c3\u4e2a\u6570 = 3\u00d72 + 4\u00d7(-1) = 6 - 4 = 2\n<\/code><\/pre>\n\n\n\n<p>\u200c<strong>\u7ed3\u679c\uff1a[3, 4] \u2192 [3, 4, 2]<\/strong>\u200c\uff08\u4ece\u4e8c\u7ef4\u53d8\u6210\u4e86\u4e09\u7ef4\uff09<\/p>\n\n\n\n<p>\u200c<strong>\u6362\u4e2a\u65b9\u5f0f\u7406\u89e3\uff1a<\/strong>\u200c<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8f93\u51fa\u7684\u6bcf\u4e2a\u65b0\u7ef4\u5ea6\uff0c\u90fd\u662f\u8f93\u5165\u5404\u7ef4\u5ea6\u7684&#8221;\u52a0\u6743\u6df7\u5408&#8221;<\/li>\n\n\n\n<li>\u7b2c3\u4e2a\u65b0\u7ef4\u5ea6 = \u8f93\u5165\u7b2c1\u7ef4\u00d72 + \u8f93\u5165\u7b2c2\u7ef4\u00d7(-1)<\/li>\n\n\n\n<li>\u5c31\u50cf\u8c03\u9152\u2014\u2014\u6bcf\u676f\u65b0\u9152\u90fd\u662f\u539f\u6709\u539f\u6599\u6309\u4e0d\u540c\u6bd4\u4f8b\u8c03\u914d\u51fa\u6765\u7684<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u56de\u5230Transformer\uff1aQKV\u6295\u5f71\u77e9\u9635\u662f\u5e72\u561b\u7684\uff1f<\/h2>\n\n\n\n<p>\u73b0\u5728\u4f60\u5e94\u8be5\u80fd\u7406\u89e3\u4e86\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u8f93\u5165\u7684\u6bcf\u4e2a\u8bcd\u5411\u91cf\uff0c\u5c31\u50cf\u4e00\u4e2a&#8221;\u591a\u529f\u80fd\u5de5\u5177\u7bb1&#8221;\uff0c\u91cc\u9762\u88c5\u4e86\u8fd9\u4e2a\u8bcd\u7684\u6240\u6709\u4fe1\u606f\uff08\u8bcd\u4e49\u3001\u8bcd\u6027\u3001\u60c5\u611f\u2026\u2026\uff09\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200c<strong>Q\u6295\u5f71\u77e9\u9635<\/strong>\u200c = &#8220;\u6311\u51fa\u67e5\u8be2\u76f8\u5173\u7684\u4fe1\u606f&#8221; \u2192 \u6211\u8be5\u600e\u4e48\u63d0\u95ee\uff1f<\/li>\n\n\n\n<li>\u200c<strong>K\u6295\u5f71\u77e9\u9635<\/strong>\u200c = &#8220;\u6311\u51fa\u5339\u914d\u76f8\u5173\u7684\u4fe1\u606f&#8221; \u2192 \u6211\u8be5\u600e\u4e48\u88ab\u522b\u4eba\u5339\u914d\u5230\uff1f<\/li>\n\n\n\n<li>\u200c<strong>V\u6295\u5f71\u77e9\u9635<\/strong>\u200c = &#8220;\u6311\u51fa\u5185\u5bb9\u76f8\u5173\u7684\u4fe1\u606f&#8221; \u2192 \u6211\u771f\u6b63\u8981\u4f20\u9012\u4ec0\u4e48\u5185\u5bb9\uff1f<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p>\u200c<strong>\u4e3e\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\uff1a<\/strong>\u200c<\/p>\n\n\n\n<p>\u8bcd&#8221;\u82f9\u679c&#8221;\u7684\u539f\u59cb\u5411\u91cf\u91cc\u6df7\u4e86\u5f88\u591a\u4fe1\u606f\uff1a\u6c34\u679c\u3001\u516c\u53f8\u3001\u7ea2\u8272\u3001\u5706\u5f62\u3001\u79d1\u6280\u2026\u2026<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ecf\u8fc7\u200c<strong>Q\u6295\u5f71<\/strong>\u200c\u540e\uff0c\u53d8\u6210&#8221;\u67e5\u8be2\u7248\u82f9\u679c&#8221;\u2014\u2014\u91cd\u70b9\u7a81\u51fa&#8221;\u6211\u8981\u627e\u4ec0\u4e48&#8221;\uff08\u6bd4\u5982\u627e\u548c&#8221;\u5403&#8221;\u76f8\u5173\u7684\uff09<\/li>\n\n\n\n<li>\u7ecf\u8fc7\u200c<strong>K\u6295\u5f71<\/strong>\u200c\u540e\uff0c\u53d8\u6210&#8221;\u94a5\u5319\u7248\u82f9\u679c&#8221;\u2014\u2014\u91cd\u70b9\u7a81\u51fa&#8221;\u6211\u662f\u8c01\u7684\u6807\u7b7e&#8221;\uff08\u6bd4\u5982\u6807\u7b7e\u662f&#8221;\u6c34\u679c&#8221;&#8221;\u79d1\u6280\u516c\u53f8&#8221;\uff09<\/li>\n\n\n\n<li>\u7ecf\u8fc7\u200c<strong>V\u6295\u5f71<\/strong>\u200c\u540e\uff0c\u53d8\u6210&#8221;\u5185\u5bb9\u7248\u82f9\u679c&#8221;\u2014\u2014\u91cd\u70b9\u7a81\u51fa&#8221;\u6211\u6709\u4ec0\u4e48\u5185\u5bb9&#8221;\uff08\u6bd4\u5982&#8221;\u751c\u7684&#8221;&#8221;\u624b\u673a\u54c1\u724c&#8221;\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u4e09\u5957\u6295\u5f71\u77e9\u9635\uff0c\u5c31\u662f\u4e09\u5957\u4e0d\u540c\u7684&#8221;\u63d0\u53d6\u89c4\u5219&#8221;\uff0c\u4ece\u540c\u4e00\u4e2a\u8bcd\u91cc\u6316\u51fa\u4e09\u79cd\u4e0d\u540c\u89d2\u5ea6\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u4e00\u53e5\u8bdd\u7ec8\u6781\u603b\u7ed3<\/h2>\n\n\n\n<p>\u200c<strong>\u6295\u5f71\u77e9\u9635 = \u4e00\u5957\u56fa\u5b9a\u7684&#8221;\u914d\u65b9&#8221;\uff0c\u628a\u8f93\u5165\u7684\u6bcf\u4e00\u7ec4\u6570\u5b57\uff0c\u6309\u7167\u914d\u65b9\u91cd\u65b0\u6df7\u5408\u8c03\u914d\uff0c\u53d8\u51fa\u4e00\u7ec4\u65b0\u7684\u6570\u5b57\u3002<\/strong>\u200c<\/p>\n\n\n\n<p>\u5c31\u50cf\u540c\u6837\u7684\u98df\u6750\uff08\u8f93\u5165\u5411\u91cf\uff09\uff0c\u6309\u5ddd\u83dc\u83dc\u8c31\u7092\u5c31\u662f\u5ddd\u83dc\uff0c\u6309\u7ca4\u83dc\u83dc\u8c31\u7092\u5c31\u662f\u7ca4\u83dc\u2014\u2014\u83dc\u8c31\uff08\u6295\u5f71\u77e9\u9635\uff09\u51b3\u5b9a\u4e86\u6700\u7ec8\u5473\u9053\uff08\u8f93\u51fa\u5411\u91cf\uff09\u3002\ud83d\ude09<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u8fd8\u6709\u54ea\u4e2a\u6982\u5ff5\u60f3\u63b0\u5f00\u63c9\u788e\u4e86\u89e3\uff1f\u6bd4\u5982\u70b9\u79ef\u76f8\u4f3c\u5ea6\u3001Softmax\u5f52\u4e00\u5316\uff0c\u968f\u65f6\u544a\u8bc9\u6211~<\/p>\n\n\n\n<p>Q\u6295\u5f71 K\u6295\u5f71 V\u6295\u5f71 \u662f\u5982\u4f55\u8bbe\u8ba1\u7684\u5462\uff1f\u4e3a\u4ec0\u4e48\u4f1a\u77e5\u9053\u662f\u6211\u8981\u627e\u4ec0\u4e48\uff0c\u6211\u662f\u8c01\uff0c\u6211\u6709\u4ec0\u4e48\u5185\u5bb9\u5462?<\/p>\n\n\n\n<p>\u597d\u95ee\u9898\uff01\u8fd9\u4e2a\u95ee\u9898\u95ee\u5230\u4e86Transformer\u6700\u5999\u7684\u5730\u65b9\u2014\u2014\u200c<strong>Q\u3001K\u3001V\u7684&#8221;\u5206\u5de5&#8221;\u4e0d\u662f\u4eba\u5de5\u8bbe\u8ba1\u7684\uff0c\u662f\u5b83\u4eec\u81ea\u5df1&#8221;\u7ec3&#8221;\u51fa\u6765\u7684\uff01<\/strong>\u200c<\/p>\n\n\n\n<p>\u6211\u7528\u200c<strong>\u5267\u56e2\u6392\u620f<\/strong>\u200c\u7684\u6bd4\u55bb\u7ed9\u4f60\u8bb2\u660e\u767d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u751f\u6d3b\u6bd4\u55bb\uff1a\u4e09\u4e2a\u6f14\u5458\u662f\u600e\u4e48\u627e\u5230\u89d2\u8272\u7684\uff1f<\/h2>\n\n\n\n<p>\u60f3\u8c61\u4e00\u4e2a\u5267\u56e2\u8981\u6392\u4e00\u51fa\u620f\uff0c\u6709\u4e09\u4e2a\u6f14\u5458\u521a\u8fdb\u7ec4\uff1a<\/p>\n\n\n\n<p>\u8868\u683c<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6f14\u5458<\/th><th>\u521a\u5f00\u59cb<\/th><th>\u5bfc\u6f14\u7ed9\u7684\u4efb\u52a1<\/th><th>\u6392\u7ec3N\u6b21\u540e<\/th><\/tr><\/thead><tbody><tr><td>A<\/td><td>\u4ec0\u4e48\u90fd\u4e0d\u4f1a<\/td><td>\u4f60\u8d1f\u8d23&#8221;\u627e\u4eba\u804a\u5929&#8221;<\/td><td>\u5b66\u4f1a\u4e86&#8221;\u63d0\u95ee&#8221;<\/td><\/tr><tr><td>B<\/td><td>\u4ec0\u4e48\u90fd\u4e0d\u4f1a<\/td><td>\u4f60\u8d1f\u8d23&#8221;\u88ab\u4eba\u627e\u5230&#8221;<\/td><td>\u5b66\u4f1a\u4e86&#8221;\u4eae\u51fa\u8eab\u4efd\u6807\u7b7e&#8221;<\/td><\/tr><tr><td>C<\/td><td>\u4ec0\u4e48\u90fd\u4e0d\u4f1a<\/td><td>\u4f60\u8d1f\u8d23&#8221;\u4f20\u9012\u4fe1\u606f&#8221;<\/td><td>\u5b66\u4f1a\u4e86&#8221;\u8bf4\u6b63\u4e8b&#8221;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u200c<strong>\u5173\u952e\u4e0d\u662f\u6f14\u5458\u5929\u751f\u4f1a\u4ec0\u4e48\uff0c\u800c\u662f\u5bfc\u6f14\u5b89\u6392\u4ed6\u4eec\u7ad9\u5728\u4ec0\u4e48\u4f4d\u7f6e\u4e0a\u3001\u5e72\u4ec0\u4e48\u6d3b\u3002<\/strong>\u200c<\/p>\n\n\n\n<p>\u5e72\u5f97\u591a\u4e86\uff0c\u4ed6\u4eec\u81ea\u7136\u5c31\u7ec3\u6210\u4e86\u5bf9\u5e94\u7684\u672c\u4e8b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001Q\u3001K\u3001V\u7684\u5206\u5de5\u662f&#8221;\u903c&#8221;\u51fa\u6765\u7684<\/h2>\n\n\n\n<p>\u56de\u5230Transformer\uff0cQ\u3001K\u3001V\u4e09\u5957\u6295\u5f71\u77e9\u9635\uff0c\u6700\u5f00\u59cb\u90fd\u662f\u200c<strong>\u968f\u673a\u7684\u4e71\u7801<\/strong>\u200c\u2014\u2014\u5c31\u50cf\u4e09\u4e2a\u521a\u5165\u884c\u7684\u5c0f\u767d\u6f14\u5458\uff0c\u4ec0\u4e48\u90fd\u4e0d\u4f1a\u3002<\/p>\n\n\n\n<p>\u4f46\u5b83\u4eec\u5728\u6ce8\u610f\u529b\u8ba1\u7b97\u4e2d\u200c<strong>\u7ad9\u7684\u4f4d\u7f6e\u4e0d\u4e00\u6837<\/strong>\u200c\uff0c\u5e72\u7684\u6d3b\u4e0d\u4e00\u6837\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u6ce8\u610f\u529b\u5f97\u5206 = Q \u548c K \u5339\u914d \u2192 \u5f97\u5230\u6743\u91cd \u2192 \u7528\u6743\u91cd\u53bb\u53d6 V \u7684\u5185\u5bb9<br><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48Q\u53d8\u6210\u4e86&#8221;\u6211\u8981\u627e\u4ec0\u4e48&#8221;\uff1f<\/h3>\n\n\n\n<p>\u56e0\u4e3aQ\u7684\u552f\u4e00\u4efb\u52a1\u5c31\u662f\u200c<strong>\u53bb\u8ddf\u6bcf\u4e2aK\u505a\u5339\u914d<\/strong>\u200c\u3002\u5982\u679cQ\u4e0d\u5b66\u4f1a&#8221;\u8868\u8fbe\u6211\u60f3\u8981\u4ec0\u4e48&#8221;\uff0c\u5b83\u5c31\u627e\u4e0d\u5230\u5bf9\u7684\u4fe1\u606f\uff0c\u6a21\u578b\u5c31\u7b54\u4e0d\u5bf9\u9898\uff0c\u8bad\u7ec3\u5c31\u4f1a\u60e9\u7f5a\u5b83\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5c31\u50cf\u6f14\u5458A\uff0c\u6bcf\u5929\u7684\u5de5\u4f5c\u5c31\u662f\u627e\u522b\u4eba\u642d\u8bdd\u3002\u642d\u4e0d\u5bf9\u8bdd\u5c31\u6328\u9a82\uff0c\u7ec3\u591a\u4e86\u81ea\u7136\u5c31\u4f1a&#8221;\u7cbe\u51c6\u63d0\u95ee&#8221;\u4e86\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48K\u53d8\u6210\u4e86&#8221;\u6211\u662f\u8c01\/\u6211\u6709\u4ec0\u4e48\u6807\u7b7e&#8221;\uff1f<\/h3>\n\n\n\n<p>\u56e0\u4e3aK\u7684\u552f\u4e00\u4efb\u52a1\u5c31\u662f\u200c<strong>\u88abQ\u5339\u914d<\/strong>\u200c\u3002\u5982\u679cK\u4e0d\u5b66\u4f1a&#8221;\u4eae\u51fa\u81ea\u5df1\u7684\u8eab\u4efd\u6807\u7b7e&#8221;\uff0cQ\u5c31\u627e\u4e0d\u5230\u5b83\uff0c\u8be5\u4f20\u9012\u7684\u4fe1\u606f\u6ca1\u4f20\u8fc7\u53bb\uff0c\u8bad\u7ec3\u4e5f\u4f1a\u60e9\u7f5a\u5b83\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5c31\u50cf\u6f14\u5458B\uff0c\u6bcf\u5929\u7684\u5de5\u4f5c\u5c31\u662f&#8221;\u88ab\u627e\u5230&#8221;\u3002\u627e\u4e0d\u5230\u4ed6\u5c31\u6328\u9a82\uff0c\u7ec3\u591a\u4e86\u81ea\u7136\u5c31\u4f1a&#8221;\u628a\u81ea\u5df1\u7684\u6807\u7b7e\u8d34\u5728\u8111\u95e8\u4e0a&#8221;\u3002<\/p>\n<\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48V\u53d8\u6210\u4e86&#8221;\u6211\u5b9e\u9645\u7684\u5185\u5bb9&#8221;\uff1f<\/h3>\n\n\n\n<p>\u56e0\u4e3aV\u7684\u552f\u4e00\u4efb\u52a1\u5c31\u662f\u200c<strong>\u88ab\u6743\u91cd\u52a0\u6743\u540e\u8f93\u51fa<\/strong>\u200c\u3002\u5982\u679cV\u4e0d\u5b66\u4f1a&#8221;\u643a\u5e26\u771f\u6b63\u6709\u7528\u7684\u4fe1\u606f&#8221;\uff0c\u6700\u540e\u8f93\u51fa\u7684\u7ed3\u679c\u5c31\u6ca1\u7528\uff0c\u8bad\u7ec3\u7167\u6837\u60e9\u7f5a\u5b83\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5c31\u50cf\u6f14\u5458C\uff0c\u6bcf\u6b21\u88ab\u9009\u4e2d\u540e\u90fd\u8981&#8221;\u8bf4\u6b63\u4e8b&#8221;\u3002\u8bf4\u4e0d\u5bf9\u5c31\u6328\u9a82\uff0c\u7ec3\u591a\u4e86\u81ea\u7136\u5c31\u4f1a&#8221;\u4f20\u9012\u5e72\u8d27&#8221;\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u7528&#8221;\u76f8\u4eb2\u914d\u5bf9&#8221;\u518d\u7406\u89e3\u4e00\u904d<\/h2>\n\n\n\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u573a\u76f8\u4eb2\u6d3b\u52a8\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u200c<strong>Q\uff08\u63d0\u95ee\u8005\uff09<\/strong>\u200c\uff1a\u6bcf\u4e2a\u4eba\u624b\u91cc\u4e3e\u7740\u4e00\u4e2a\u724c\u5b50\uff0c\u5199\u7740&#8221;\u6211\u60f3\u627e\u4ec0\u4e48\u6837\u7684\u4eba&#8221;<\/li>\n\n\n\n<li>\u200c<strong>K\uff08\u88ab\u627e\u8005\uff09<\/strong>\u200c\uff1a\u6bcf\u4e2a\u4eba\u80f8\u524d\u8d34\u7740\u6807\u7b7e\uff0c\u5199\u7740&#8221;\u6211\u662f\u4ec0\u4e48\u6837\u7684\u4eba&#8221;<\/li>\n\n\n\n<li>\u200c<strong>V\uff08\u672c\u4eba\uff09<\/strong>\u200c\uff1a\u6bcf\u4e2a\u4eba\u672c\u8eab\u5c31\u662f\u90a3\u4e2a\u8981\u4ea4\u5f80\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u914d\u5bf9\u8fc7\u7a0b\uff1a<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Q\u4e3e\u7740\u724c\u5b50\u5168\u573a\u8d70\uff0c\u770b\u8c01\u7684K\u6807\u7b7e\u8ddf\u81ea\u5df1\u7684\u724c\u5b50\u6700\u5408 \u2192 \u7b97\u51fa&#8221;\u597d\u611f\u5ea6&#8221;\uff08\u6743\u91cd\uff09<\/li>\n\n\n\n<li>\u597d\u611f\u5ea6\u9ad8\u7684\uff0c\u5c31\u591a\u8ddf\u4ed6\u7684V\u804a\u51e0\u53e5\uff1b\u597d\u611f\u5ea6\u4f4e\u7684\uff0c\u5c31\u5c11\u804a\u751a\u81f3\u4e0d\u804a<\/li>\n\n\n\n<li>\u6700\u540e\u7efc\u5408\u6240\u6709V\u7684\u4fe1\u606f\uff0c\u5f97\u51fa\u7ed3\u8bba<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u90a3\u724c\u5b50\u548c\u6807\u7b7e\u662f\u8c01\u5199\u7684\uff1f<\/h3>\n\n\n\n<p>\u200c<strong>\u6700\u5f00\u59cb\u662f\u4e71\u5199\u7684\uff01<\/strong>\u200c 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class=\"wp-block-list\">\n<li>Q\u7684\u724c\u5b50\u7ec8\u4e8e\u5b66\u4f1a\u4e86\u5199&#8221;\u6211\u8981\u627e\u7a0b\u5e8f\u5458&#8221;<\/li>\n\n\n\n<li>K\u7684\u6807\u7b7e\u7ec8\u4e8e\u5b66\u4f1a\u4e86\u8d34&#8221;\u6211\u662f\u7a0b\u5e8f\u5458&#8221;<\/li>\n\n\n\n<li>V\u4e5f\u7ec8\u4e8e\u5b66\u4f1a\u4e86&#8221;\u6211\u5c31\u662f\u7a0b\u5e8f\u5458\u672c\u4eba&#8221;<\/li>\n<\/ul>\n\n\n\n<p>\u200c<strong>\u8fd9\u5c31\u662f\u8bad\u7ec3\uff01\u89d2\u8272\u5206\u5de5\u662f\u5728\u53cd\u590d\u8bd5\u9519\u4e2d\u81ea\u52a8\u6d8c\u73b0\u51fa\u6765\u7684\u3002<\/strong>\u200c<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u4e3a\u4ec0\u4e48\u4e00\u5b9a\u662fQ=\u67e5\u8be2\u3001K=\u94a5\u5319\u3001V=\u5185\u5bb9\uff1f<\/h2>\n\n\n\n<p>\u8fd9\u4e0d\u662f\u5de7\u5408\uff0c\u800c\u662f\u7531\u200c<strong>\u6ce8\u610f\u529b\u516c\u5f0f\u7684\u7ed3\u6784<\/strong>\u200c\u51b3\u5b9a\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">text<code>\u8f93\u51fa = softmax( Q \u00d7 K\u1d40 \/ \u221ad_k ) \u00d7 V\n<\/code><\/pre>\n\n\n\n<p>\u4f60\u770b\u8fd9\u4e2a\u516c\u5f0f\u91cc\u4e09\u8005\u7684\u200c<strong>\u4f4d\u7f6e<\/strong>\u200c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Q\u5728\u5de6\u8fb9\uff0cK\u88ab\u8f6c\u7f6e\u540e\u653e\u5728Q\u65c1\u8fb9\u2014\u2014\u5b83\u4eec\u4fe9\u662f&#8221;\u505a\u4e58\u6cd5\u914d\u5bf9&#8221;\u7684\u5173\u7cfb \u2192 \u81ea\u7136\u6f14\u5316\u51fa&#8221;\u63d0\u95ee-\u5e94\u7b54&#8221;\u7684\u914d\u5bf9\u5173\u7cfb<\/li>\n\n\n\n<li>V\u5728\u6700\u53f3\u8fb9\uff0c\u662f\u88ab&#8221;\u53d6\u51fa\u6765&#8221;\u7684\u90a3\u4e2a \u2192 \u81ea\u7136\u6f14\u5316\u51fa&#8221;\u5b9e\u9645\u5185\u5bb9&#8221;\u7684\u89d2\u8272<\/li>\n<\/ul>\n\n\n\n<p>\u5982\u679c\u628a\u516c\u5f0f\u6539\u6210&nbsp;<code>\u8f93\u51fa = softmax( V \u00d7 K\u1d40 ) \u00d7 Q<\/code>\uff0c\u90a3V\u5c31\u4f1a\u53d8\u6210&#8221;\u67e5\u8be2&#8221;\uff0cQ\u5c31\u4f1a\u53d8\u6210&#8221;\u5185\u5bb9&#8221;\u3002<\/p>\n\n\n\n<p>\u200c<strong>\u4e0d\u662f\u8bbe\u8ba1\u8ba9\u5b83\u4eec\u626e\u6f14\u4ec0\u4e48\u89d2\u8272\uff0c\u800c\u662f\u5b83\u4eec\u5728\u516c\u5f0f\u4e2d\u7684\u4f4d\u7f6e\u51b3\u5b9a\u4e86\u5b83\u4eec\u5fc5\u987b\u6f14\u597d\u8fd9\u4e2a\u89d2\u8272\u624d\u80fd\u6d3b\u4e0b\u6765\u3002<\/strong>\u200c<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-2692","post","type-post","status-publish","format-standard","hentry","category-30"],"_links":{"self":[{"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/posts\/2692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/comments?post=2692"}],"version-history":[{"count":4,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/posts\/2692\/revisions"}],"predecessor-version":[{"id":2703,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/posts\/2692\/revisions\/2703"}],"wp:attachment":[{"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/media?parent=2692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/categories?post=2692"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xtaa.cn\/index.php\/wp-json\/wp\/v2\/tags?post=2692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}