{"id":1128,"date":"2023-12-13T23:21:29","date_gmt":"2023-12-13T15:21:29","guid":{"rendered":"https:\/\/edu.secda.info\/scu12354014\/?p=1128"},"modified":"2024-01-06T15:36:14","modified_gmt":"2024-01-06T07:36:14","slug":"20231109-week-9-%e8%a8%88%e9%87%8f%e7%b6%93%e6%bf%9f%e5%ad%b8%e4%bd%9c%e6%a5%ad","status":"publish","type":"post","link":"https:\/\/edu.secda.info\/scu12354014\/?p=1128","title":{"rendered":"\u8a08\u91cf\u7d93\u6fdf\u5b78\u4f5c\u696d Radj,spline regression,duration"},"content":{"rendered":"<p><strong><span style=\"color: #0000ff;\">1. Radj \u662f\u751a\u9ebc\uff1f<\/span><\/strong><\/p>\n<p>\u300cAdjusted R-squared\u300d\uff0c\u4e5f\u5c31\u662f\u300c\u8abf\u6574\u5f8c\u7684R\u5e73\u65b9\u503c\u300d\u3002R\u5e73\u65b9\u503c\u662f\u7528\u4f86\u8861\u91cf\u591a\u5143\u7dda\u6027\u56de\u6b78\u6a21\u578b\u4e2d\u81ea\u8b8a\u91cf\uff08\u89e3\u91cb\u8b8a\u91cf\uff09\u5c0d\u56e0\u8b8a\u91cf\uff08\u88ab\u89e3\u91cb\u8b8a\u91cf\uff09\u7684\u89e3\u91cb\u7a0b\u5ea6\u3002\u800cRadj\u662f\u5c0dR\u5e73\u65b9\u503c\u9032\u884c\u8abf\u6574\u5f8c\u7684\u7248\u672c\uff0c\u8003\u616e\u4e86\u6a21\u578b\u4e2d\u4f7f\u7528\u7684\u81ea\u8b8a\u91cf\u6578\u91cf\uff0c\u56e0\u6b64\u53ef\u4ee5\u66f4\u597d\u5730\u8a55\u4f30\u6a21\u578b\u7684\u89e3\u91cb\u80fd\u529b\uff0c\u53ef\u4ee5\u8003\u616e\u5230\u6a21\u578b\u7684\u300c\u6210\u672c\u300d\uff0c\u589e\u52a0\u7684\u8b8a\u6578\u6709\u6c92\u6709\u908a\u969b\u89e3\u91cb\u529b\u3002<\/p>\n<p>\u5982\u679cy\u88ab\u8abf\u6574\uff0c\u5247\u9808\u628ay\u5747\u9084\u539f\u81f3\u539f\u59cb\uff1b\u6216\u4f7f\u7528SSE(MSE)\u53bb\u505a\u6bd4\u6bd4\u8f03\u3002<\/p>\n<p><strong><span style=\"color: #0000ff;\">2.spline regression<\/span><\/strong><\/p>\n<p>Spline regression \u662f\u4e00\u7a2e\u4f7f\u7528<em>\u5206\u6bb5<\/em>\u591a\u9805\u5f0f\u4f86\u64ec\u5408\u6578\u64da\u7684\u56de\u6b78\u65b9\u6cd5\u3002\u5b83\u5c07\u6578\u64da\u5206\u70ba\u591a\u500b\u5340\u6bb5\uff0c\u5728\u6bcf\u500b\u5340\u6bb5\u5167\u4f7f\u7528\u4e0d\u540c\u7684\u591a\u9805\u5f0f\u9032\u884c\u64ec\u5408\uff0c\u7136\u5f8c\u5c07\u9019\u4e9b\u591a\u9805\u5f0f\u62fc\u63a5\u5728\u4e00\u8d77\u5f62\u6210\u6574\u500b\u56de\u6b78\u51fd\u6578\u3002<\/p>\n<p>y= a+bx+c(x-xcut)+\u00a0 \u00a0 (\u53d6\u6b63)<\/p>\n<p>xcut \u662f\u56fa\u5b9a\u7684\u9ede\uff0c\u5e38\u6578<\/p>\n<p>(x-xcut)+\u00a0 {1. 0 ,if x&lt;xcut 2. x-xcut ,if x&gt;xcut<\/p>\n<p>c = b\u539f\u59cb\u659c\u7387\u7684\u5ef6\u4f38\u548c\u5206\u6bb5\u5f8c\u659c\u7387\u7684\u593e\u89d2\u3002<\/p>\n<p><strong><span style=\"color: #0000ff;\">3.duration<\/span><\/strong><\/p>\n<p>\u5b83\u8861\u91cf\u7684\u662f\u50b5\u5238\u7684\u50f9\u503c\u5c0d\u5229\u7387\u8b8a\u52d5\u7684\u654f\u611f\u6027\u3002\u7576\u5229\u7387\u8b8a\u52d5\u6642\uff0c\u50b5\u5238\u50f9\u503c\u6703\u76f8\u61c9\u8b8a\u5316\uff0c\u800cduration\u5c31\u662f\u8861\u91cf\u9019\u7a2e\u8b8a\u5316\u7684\u5de5\u5177\u4e4b\u4e00\u3002<\/p>\n<p>\u901a\u5e38\uff0c\u7576\u5229\u7387\u4e0a\u5347\u6642\uff0c\u50b5\u5238\u50f9\u503c\u6703\u4e0b\u964d\uff1b\u7576\u5229\u7387\u4e0b\u964d\u6642\uff0c\u50b5\u5238\u50f9\u503c\u6703\u4e0a\u5347\u3002\u800cduration\u544a\u8a34\u6295\u8cc7\u8005\u6216\u8005\u50b5\u5238\u6301\u6709\u8005\uff0c\u50b5\u5238\u50f9\u503c\u6703\u56e0\u5229\u7387\u8b8a\u52d5\u800c\u7522\u751f\u7684\u8b8a\u5316\u5e45\u5ea6\u6709\u591a\u5927\u3002\u66f4\u9577\u7684duration\u610f\u5473\u8457\u50b5\u5238\u50f9\u503c\u66f4\u70ba\u654f\u611f\uff0c\u66f4\u77ed\u7684duration\u5247\u8868\u793a\u5c0d\u5229\u7387\u8b8a\u52d5\u7684\u654f\u611f\u6027\u8f03\u4f4e\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. Radj \u662f\u751a\u9ebc\uff1f \u300cAdjusted R-squared\u300d\uff0c\u4e5f\u5c31\u662f\u300c\u8abf\u6574<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,27],"tags":[],"_links":{"self":[{"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/posts\/1128"}],"collection":[{"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1128"}],"version-history":[{"count":6,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/posts\/1128\/revisions"}],"predecessor-version":[{"id":1311,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=\/wp\/v2\/posts\/1128\/revisions\/1311"}],"wp:attachment":[{"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edu.secda.info\/scu12354014\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}