{"id":227,"date":"2023-02-04T18:42:16","date_gmt":"2023-02-04T10:42:16","guid":{"rendered":"https:\/\/www.vcoco.top\/?p=227"},"modified":"2023-02-05T17:51:57","modified_gmt":"2023-02-05T09:51:57","slug":"chapter-2","status":"publish","type":"post","link":"https:\/\/www.vcoco.top\/index.php\/2023\/02\/04\/chapter-2\/","title":{"rendered":"Chapter-2"},"content":{"rendered":"\n

2-1\u6a21\u578b\u63cf\u8ff0<\/h3>\n\n\n\n
\"\"<\/div>
\u5355\u53d8\u91cf\u7ebf\u6027\u56de\u5f52<\/figcaption><\/figure>\n\n\n\n

2-2\u4ee3\u4ef7\u51fd\u6570<\/h3>\n\n\n\n

\u6700\u5c0f\u5316\u65b9\u5dee\u3002\u4ee3\u4ef7\u51fd\u6570=$min\\sum_{i=1}^{n}(h_\\theta (x^i)-y^i)$<\/p>\n\n\n\n

2-3,2-4\u4ee3\u4ef7\u51fd\u6570<\/h3>\n\n\n\n
\"\"<\/div>
\u7531\u56fe\u53ef\u4ee5\u770b\u51fa$\\theta_1$\u53d61\u65f6\u4ee3\u4ef7\u51fd\u6570\u53d6\u5f97\u6700\u5c0f\u503c<\/figcaption><\/figure>\n\n\n\n
\"\"<\/div>
\u4e8c\u5143\u4ee3\u4ef7\u51fd\u6570\u56fe<\/figcaption><\/figure>\n\n\n\n

2-5\u68af\u5ea6\u4e0b\u964d<\/h3>\n\n\n\n

\u5e38\u89c4\u7b97\u6cd5\uff0c\u4e0d\u4ec5\u7528\u5728\u7ebf\u6027\u56de\u5f52\uff0c\u8fd8\u7528\u5728\u5f88\u591a\u673a\u5668\u5b66\u4e60\u4e2d<\/p>\n\n\n\n

\"\"<\/div>
\u4e00\u76f4\u68af\u5ea6\u4e0b\u964d\u76f4\u5230\u6536\u655b<\/figcaption><\/figure>\n\n\n\n

\u68af\u5ea6\u4e0b\u964d\u8fc7\u7a0b\u4e2d\u8ba1\u7b97\u7684$\\theta_i$\u53ef\u80fd\u548c\u5b9e\u9645\u56fe\u4e2d\u7684$\\theta_i$\u6709\u504f\u5dee\uff0c\u8fd9\u4e2a\u5f71\u54cd\u4e0d\u5927\u3002\u4e0b\u4e00\u6b21\u518d\u8ba1\u7b97\u7528\u7684\u4f9d\u65e7\u662f\u5b9e\u9645\u56fe\u4e2d\u7684\u503c $J(\\theta_{0_{i-1}}, \\theta_{1_{i-1}})$<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

2-6,2-7<\/h3>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

\u4ee5\u4e0a\u8bb2\u7684\u90fd\u662fbatch\u68af\u5ea6\u4e0b\u964d\u6cd5\uff1a\u6bcf\u4e00\u6b21\u8ba1\u7b97\u904d\u5386\u6240\u6709\u6570\u636e\u96c6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

2-1\u6a21\u578b\u63cf\u8ff0 2-2\u4ee3\u4ef7\u51fd\u6570 \u6700\u5c0f\u5316\u65b9\u5dee\u3002\u4ee3\u4ef7\u51fd\u6570=$min\\sum_{i=1}^{n}(h_\\theta […]<\/p>\n","protected":false},"author":1,"featured_media":213,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[82],"tags":[],"class_list":["post-227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machine-learning"],"_links":{"self":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/comments?post=227"}],"version-history":[{"count":4,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/227\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/posts\/227\/revisions\/238"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/media\/213"}],"wp:attachment":[{"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/media?parent=227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/categories?post=227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vcoco.top\/index.php\/wp-json\/wp\/v2\/tags?post=227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}