{"id":44993,"date":"2023-12-11T15:04:33","date_gmt":"2023-12-11T07:04:33","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=44993"},"modified":"2023-12-11T15:04:33","modified_gmt":"2023-12-11T07:04:33","slug":"%e8%af%b7%e4%bd%a0%e8%af%b4%e4%b8%80%e8%af%b4%e6%8e%a8%e8%8d%90%e7%ae%97%e6%b3%95%ef%bc%8cfm%ef%bc%8clr%ef%bc%8cembedding-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%af%b7%e4%bd%a0%e8%af%b4%e4%b8%80%e8%af%b4%e6%8e%a8%e8%8d%90%e7%ae%97%e6%b3%95%ef%bc%8cfm%ef%bc%8clr%ef%bc%8cembedding-2\/","title":{"rendered":"\u8bf7\u4f60\u8bf4\u4e00\u8bf4\u63a8\u8350\u7b97\u6cd5\uff0cfm\uff0clr\uff0cembedding"},"content":{"rendered":"

“`” \u53c2\u8003\u56de\u7b54\uff1a<\/p>\n

\u63a8\u8350\u7b97\u6cd5\uff1a<\/p>\n

\u57fa\u4e8e\u4eba\u53e3\u5b66\u7684\u63a8\u8350\u3001\u57fa\u4e8e\u5185\u5bb9\u7684\u63a8\u8350\u3001\u57fa\u4e8e\u7528\u6237\u7684\u534f\u540c\u8fc7\u6ee4\u63a8\u8350\u3001\u57fa\u4e8e\u9879\u76ee\u7684\u534f\u540c\u8fc7\u6ee4\u63a8\u8350\u3001\u57fa\u4e8e\u6a21\u578b\u7684\u534f\u540c\u8fc7\u6ee4\u63a8\u8350\u3001\u57fa\u4e8e\u5173\u8054\u89c4\u5219\u7684\u63a8\u8350<\/p>\n

FM\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637289817_6CBE803838BD47DA6A26DD810D78B3AC""><\/p>\n

LR\uff1a<\/p>\n

\u903b\u8f91\u56de\u5f52\u672c\u8d28\u4e0a\u662f\u7ebf\u6027\u56de\u5f52\uff0c\u53ea\u662f\u5728\u7279\u5f81\u5230\u7ed3\u679c\u7684\u6620\u5c04\u4e2d\u52a0\u5165\u4e86\u4e00\u5c42\u903b\u8f91\u51fd\u6570g(z)\uff0c\u5373\u5148\u628a\u7279\u5f81\u7ebf\u6027\u6c42\u548c\uff0c\u7136\u540e\u4f7f\u7528\u51fd\u6570g(z)\u4f5c\u4e3a\u5047\u8bbe\u51fd\u6570\u6765\u9884\u6d4b\u3002g(z)\u53ef\u4ee5\u5c06\u8fde\u7eed\u503c\u6620\u5c04\u52300 \u548c1\u3002g(z)\u4e3asigmoid function.<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637314282_ABB45846A64BE026999B9DABBA362E7B""><\/p>\n

\u5219<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637336566_C010D5A3D04510FDEF55D95CD161A772""><\/p>\n

sigmoid function \u7684\u5bfc\u6570\u5982\u4e0b\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637357116_8D7C8B52CDF9D7EC482A998311A2B818""><\/p>\n

\u903b\u8f91\u56de\u5f52\u7528\u6765\u5206\u7c7b0\/1 \u95ee\u9898\uff0c\u4e5f\u5c31\u662f\u9884\u6d4b\u7ed3\u679c\u5c5e\u4e8e0 \u6216\u80051 \u7684\u4e8c\u503c\u5206\u7c7b\u95ee\u9898\u3002\u8fd9\u91cc\u5047\u8bbe\u4e86\u4e8c\u503c\u6ee1\u8db3\u4f2f\u52aa\u5229\u5206\u5e03\uff0c\u4e5f\u5c31\u662f<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637381679_F86D134E5F5D14B70687DC5056207F35""><\/p>\n

\u5176\u4e5f\u53ef\u4ee5\u5199\u6210\u5982\u4e0b\u7684\u5f62\u5f0f\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637414266_2341937DFE3AB4397DA2D3208D941214""><\/p>\n

\u5bf9\u4e8e\u8bad\u7ec3\u6570\u636e\u96c6\uff0c\u7279\u5f81\u6570\u636ex={x1, x2, \u2026 , xm}\u548c\u5bf9\u5e94\u7684\u5206\u7c7b\u6807\u7b7ey={y1, y2, \u2026 , ym}\uff0c\u5047\u8bbem\u4e2a\u6837\u672c\u662f\u76f8\u4e92\u72ec\u7acb\u7684\uff0c\u90a3\u4e48\uff0c\u6781\u5927\u4f3c\u7136\u51fd\u6570\u4e3a\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637431278_30275CD5F73DDC724BBF2B58F9D45873""><\/p>\n

log\u4f3c\u7136\u4e3a\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637486261_09AE66DE1E5BC09CEE7BA7671FD57127""><\/p>\n

\u5982\u4f55\u4f7f\u5176\u6700\u5927\u5462\uff1f\u4e0e\u7ebf\u6027\u56de\u5f52\u7c7b\u4f3c\uff0c\u6211\u4eec\u4f7f\u7528\u68af\u5ea6\u4e0a\u5347\u7684\u65b9\u6cd5\uff08\u6c42\u6700\u5c0f\u4f7f\u7528\u68af\u5ea6\u4e0b\u964d\uff09\uff0c\u90a3\u4e48<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637470767_2C54D430EF1DB11745101A428E1DFF8A"">\u3002<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637510300_EDB8DB5C2AFC07D939F66F3EB0446E91""><\/p>\n

\u5982\u679c\u53ea\u7528\u4e00\u4e2a\u8bad\u7ec3\u6837\u4f8b\uff08x\uff0cy\uff09\uff0c\u91c7\u7528\u968f\u673a\u68af\u5ea6\u4e0a\u5347\u89c4\u5219\uff0c\u90a3\u4e48\u968f\u673a\u68af\u5ea6\u4e0a\u5347\u66f4\u65b0\u89c4\u5219\u4e3a\uff1a<\/p>\n

<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637659967_D9809693D0D46FB380CD1561583B08A0""><\/p>\n

Embedding\uff1a<\/p>\n

Embedding\u5728\u6570\u5b66\u4e0a\u8868\u793a\u4e00\u4e2amaping\uff1a<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637687727_E68A0F3E25D4E8A01B9489357EE9A93E"">\uff0c\u4e5f\u5c31\u662f\u4e00\u4e2afunction\u3002\u5176\u4e2d\u8be5\u51fd\u6570\u6ee1\u8db3\u4e24\u4e2a\u6027\u8d28\uff1a1\uff09injective \uff08\u5355\u5c04\u7684\uff09\uff1a\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684\u5355\u5c04\u51fd\u6570\uff0c\u6bcf\u4e2aY\u53ea\u6709\u552f\u4e00\u7684X\u5bf9\u5e94;2\uff09structure-preserving\uff08\u7ed3\u6784\u4fdd\u5b58\uff09\uff1a\u6bd4\u5982\u5728X\u6240\u5c5e\u7684\u7a7a\u95f4\u4e0a<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637707145_3E12A2902C5F5C6E8ED1380D7A7DAA6F"">\uff0c\u90a3\u4e48\u6620\u5c04\u540e\u5728Y\u6240\u5c5e\u7a7a\u95f4\u4e0a\u540c\u7406<img alt=""img"" referrerpolicy=""no-referrer"" src=""https:\/\/uploadfiles.nowcoder.com\/images\/20190315\/311436_1552637574195_F515A3790698D5F759A645E8216D1177"">\u3002<\/p>\n

\u90a3\u4e48\u5bf9\u4e8eword embedding,\u5c31\u662f\u627e\u5230\u4e00\u4e2a\u6620\u5c04(\u51fd\u6570)\u5c06\u5355\u8bcd(word)\u6620\u5c04\u5230\u53e6\u5916\u4e00\u4e2a\u7a7a\u95f4(\u5176\u4e2d\u8fd9\u4e2a\u6620\u5c04\u5177\u6709injective\u548cstructure-preserving\u7684\u7279\u70b9),\u751f\u6210\u5728\u4e00\u4e2a\u65b0\u7684\u7a7a\u95f4\u4e0a\u7684\u8868\u8fbe\uff0c\u8be5\u8868\u8fbe\u5c31\u662fword representation\u3002<\/p>\n

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

“`” \u53c2\u8003\u56de\u7b54\uff1a \u63a8\u8350\u7b97\u6cd5\uff1a \u57fa\u4e8e\u4eba\u53e3\u5b66\u7684\u63a8\u8350\u3001\u57fa\u4e8e\u5185\u5bb9\u7684\u63a8\u8350\u3001\u57fa\u4e8e\u7528\u6237\u7684\u534f\u540c\u8fc7\u6ee4\u63a8 […]<\/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-44993","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44993","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=44993"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44993\/revisions"}],"predecessor-version":[{"id":44994,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/44993\/revisions\/44994"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=44993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=44993"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=44993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}