{"id":3331,"date":"2022-02-27T15:08:22","date_gmt":"2022-02-27T07:08:22","guid":{"rendered":"https:\/\/egonlin.com\/?p=3331"},"modified":"2022-02-27T15:08:22","modified_gmt":"2022-02-27T07:08:22","slug":"%e7%ac%ac%e5%9b%9b%e7%af%87%ef%bc%9a%e5%9d%90%e6%a0%87%e8%bd%b4%e4%b8%8b%e9%99%8d%e6%b3%95","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=3331","title":{"rendered":"\u7b2c\u56db\u7bc7\uff1a\u5750\u6807\u8f74\u4e0b\u964d\u6cd5"},"content":{"rendered":"<h1>\u5750\u6807\u8f74\u4e0b\u964d\u6cd5<\/h1>\n<p>&emsp;&emsp;\u5750\u6807\u8f74\u4e0b\u964d\u6cd5\u987e\u540d\u601d\u4e49\uff0c\u6cbf\u7740\u5750\u6807\u8f74\u4e0b\u964d\u3002\u5750\u6807\u8f74\u4e0b\u964d\u6cd5\u548c\u68af\u5ea6\u4e0b\u964d\u6cd5\u4f7f\u7528\u7684\u90fd\u662f\u8fed\u4ee3\u6cd5\uff0c\u5373\u4f7f\u7528\u542f\u53d1\u5f0f\u7684\u65b9\u5f0f\u4e00\u6b65\u4e00\u6b65\u8fed\u4ee3\u6c42\u89e3\u51fd\u6570\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<p>&emsp;&emsp;\u53ef\u4ee5\u60f3\u8c61\u4e00\u4e2a\u53ef\u5fae\u7684\u51f8\u51fd\u6570$J(\\omega)$\uff0c\u5176\u4e2d$\\omega$\u662f\u4e00\u4e2a$n*1$\u7ef4\u7684\u5411\u91cf\u3002\u5982\u679c\u5728\u8fd9$n$\u7ef4\u7a7a\u95f4\u4e2d\u5b58\u5728\u7740\u67d0\u4e00\u70b9$\\overline{\\omega}$\u80fd\u591f\u4f7f\u5f97$J(\\omega)$\u5728\u6bcf\u4e00\u4e2a\u5750\u6807\u8f74\u4e0a\u90fd\u662f\u6700\u5c0f\u7684\uff0c\u90a3\u4e48\u6211\u4eec\u5219\u53ef\u4ee5\u8bf4$J(\\overline{\\omega})$\u662f\u5168\u5c40\u6700\u5c0f\u503c\u3002\u5982\u4e8c\u7ef4\u7a7a\u95f4$(x,y)$\u4e2d\u7684\u66f2\u7ebf$x^2$\uff0c\u5f53$x$\u548c$y$\u90fd\u662f\u6700\u5c0f\u7684\u65f6\u5019\uff0c\u5373\u4e3a\u66f2\u7ebf$x^2$\u6700\u5c0f\u503c\u7684\u65f6\u5019\u3002(\u6ce8\uff1aLasso\u56de\u5f52\u7684\u76ee\u6807\u51fd\u6570\u867d\u7136\u4e0d\u53ef\u5fae\uff0c\u4f46\u662f\u7531\u4e8e\u76ee\u6807\u51fd\u6570\u975e\u6b63\u5219\u9879\u662f\u53ef\u5fae\u7684\uff0cL1\u6b63\u5219\u9879\u662f\u51f8\u51fd\u6570\uff0c\u56e0\u6b64\u4e5f\u53ef\u4ee5\u4f7f\u7528\u8be5\u7ed3\u8bba\u3002)<\/p>\n<h1>\u5750\u6807\u8f74\u4e0b\u964d\u6cd5\u6d41\u7a0b<\/h1>\n<p><\/p><div 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href=\"https:\/\/egonlin.com\/wp-login.php?action=register\">Register<\/a><\/div><div id=\"Link1\"><a href=\"https:\/\/egonlin.com\/wp-login.php?action=lostpassword\">Forgotten username or password?<\/a><\/div><div id=\"StatusBarFooter\"><\/div><\/div><\/div><div id=aru_remaining_content><\/div>","protected":false},"excerpt":{"rendered":"<p>\u5750\u6807\u8f74\u4e0b\u964d\u6cd5 &emsp;&emsp;\u5750\u6807\u8f74\u4e0b\u964d\u6cd5\u987e\u540d\u601d\u4e49\uff0c\u6cbf\u7740\u5750\u6807\u8f74\u4e0b\u964d\u3002\u5750\u6807\u8f74\u4e0b\u964d\u6cd5\u548c\u68af\u5ea6\u4e0b\u964d\u6cd5\u4f7f\u7528\u7684\u90fd\u662f 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