{"id":4431,"date":"2023-07-11T04:37:05","date_gmt":"2023-07-11T04:37:05","guid":{"rendered":"https:\/\/statorials.org\/cn\/%e5%9d%87%e6%96%b9%e6%a0%b9%e8%af%af%e5%b7%ae\/"},"modified":"2023-07-11T04:37:05","modified_gmt":"2023-07-11T04:37:05","slug":"%e5%9d%87%e6%96%b9%e6%a0%b9%e8%af%af%e5%b7%ae","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/%e5%9d%87%e6%96%b9%e6%a0%b9%e8%af%af%e5%b7%ae\/","title":{"rendered":"\u5982\u4f55\u5728 sas \u4e2d\u8ba1\u7b97 rmse"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u8bc4\u4f30\u56de\u5f52\u6a21\u578b\u5bf9\u6570\u636e\u96c6\u7684\u62df\u5408\u7a0b\u5ea6\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u8ba1\u7b97<strong>\u5747\u65b9\u8bef\u5dee<\/strong>\uff0c\u5b83\u662f\u4e00\u4e2a\u6307\u6807\uff0c\u544a\u8bc9\u6211\u4eec\u6a21\u578b\u7684\u9884\u6d4b\u503c\u4e0e\u6570\u636e\u96c6\u7684\u5b9e\u9645\u503c\u4e4b\u95f4\u7684\u5e73\u5747\u8ddd\u79bb\u3002<\/span><\/p>\n<p> <span style=\"color: #000000;\">RMSE \u8d8a\u4f4e\uff0c\u7ed9\u5b9a\u6a21\u578b\u5c31\u8d8a\u80fd\u201c\u62df\u5408\u201d\u6570\u636e\u96c6\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6c42\u5747\u65b9\u8bef\u5dee\u7684\u516c\u5f0f\uff08\u901a\u5e38\u7f29\u5199\u4e3a<strong>RMSE<\/strong> \uff09\u4e3a\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>RMSE =<\/strong> \u221a <span style=\"border-top: 1px solid black;\">\u03a3(P <sub>i<\/sub> \u2013 O <sub>i<\/sub> ) <sup>2<\/sup> \/ n<\/span><\/span><\/p>\n<p><span style=\"color: #000000;\">\u91d1\u5b50\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u03a3\u662f\u4ee3\u8868\u201c\u548c\u201d\u7684\u7b26\u53f7<\/span><\/li>\n<li><span style=\"color: #000000;\">P <sub>i<\/sub>\u662f\u6570\u636e\u96c6\u4e2d<sup>\u7b2c i \u4e2a<\/sup>\u89c2\u6d4b\u503c\u7684\u9884\u6d4b\u503c<\/span><\/li>\n<li><span style=\"color: #000000;\">O <sub>i<\/sub>\u662f\u6570\u636e\u96c6\u4e2d<sup>\u7b2c i \u4e2a<\/sup>\u89c2\u6d4b\u503c\u7684\u89c2\u6d4b\u503c<\/span><\/li>\n<li><span style=\"color: #000000;\">n \u662f\u6837\u672c\u91cf<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u5206\u6b65\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u8ba1\u7b97 SAS \u4e2d\u7b80\u5355\u7ebf\u6027\u56de\u5f52\u6a21\u578b\u7684 RMSE\u3002<\/span><\/p>\n<h2><span style=\"color: #000000;\"><b>\u7b2c 1 \u6b65\uff1a\u521b\u5efa\u6570\u636e<\/b><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u96c6\uff0c\u5176\u4e2d\u5305\u542b 15 \u540d\u5b66\u751f\u7684\u5b66\u4e60\u603b\u65f6\u6570\u548c\u671f\u672b\u8003\u8bd5\u6210\u7ee9\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u5c06\u4f7f\u7528<em>\u5c0f\u65f6<\/em>\u4f5c\u4e3a\u9884\u6d4b\u53d8\u91cf\u5e76\u4f7f\u7528<em>\u5206\u6570<\/em>\u4f5c\u4e3a\u54cd\u5e94\u53d8\u91cf\u6765\u62df\u5408\u4e00\u4e2a\u7b80\u5355\u7684\u7ebf\u6027\u56de\u5f52\u6a21\u578b\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u663e\u793a\u4e86\u5982\u4f55\u5728 SAS \u4e2d\u521b\u5efa\u6b64\u6570\u636e\u96c6\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">\/*create dataset*\/\n<\/span><span style=\"color: #800080;\">data<\/span> exam_data;\n    <span style=\"color: #3366ff;\">input<\/span> hours score;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\n1 64\n2 66\n4 76\n5 73\n5 74\n6 81\n6 83\n7 82\n8 80\n10 88\n11 84\n11 82\n12 91\n12 93\n14 89\n;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*view dataset*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =exam_data;\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-22743 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/simplesas1.jpg\" alt=\"\" width=\"143\" height=\"367\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h2><span style=\"color: #000000;\"><b>\u6b65\u9aa4 2\uff1a\u62df\u5408\u7b80\u5355\u7ebf\u6027\u56de\u5f52\u6a21\u578b<\/b><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u4f7f\u7528<strong>proc reg<\/strong>\u6765\u62df\u5408\u7b80\u5355\u7ebf\u6027\u56de\u5f52\u6a21\u578b\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">\/*fit simple linear regression model*\/\n<\/span><span style=\"color: #800080;\">proc reg<\/span> <span style=\"color: #3366ff;\">data<\/span> =exam_data;\n    <span style=\"color: #3366ff;\">model<\/span> score = hours;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-22744\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/simplesas2.jpg\" alt=\"SAS \u4e2d\u7684\u7b80\u5355\u7ebf\u6027\u56de\u5f52\u8f93\u51fa\" width=\"416\" height=\"501\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u8f93\u51fa\u4e2d\u7684 RMSE \u4e3a<strong>3.64093<\/strong> \u3002<\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>\u6b65\u9aa4 3\uff1a\u4ece\u56de\u5f52\u6a21\u578b\u4e2d\u63d0\u53d6 RMSE<\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u5982\u679c\u53ea\u60f3\u663e\u793a\u8be5\u6a21\u578b\u7684 RMSE \u800c\u4e0d\u60f3\u663e\u793a\u5176\u4ed6\u8f93\u51fa\u7ed3\u679c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">\/*fit simple linear regression model*\/<\/span><span style=\"color: #000000;\"><span style=\"color: #800080;\">\nproc reg<\/span> <span style=\"color: #3366ff;\">data<\/span> =exam_data <span style=\"color: #3366ff;\">outest<\/span> =outest <span style=\"color: #3366ff;\">noprint<\/span> ;\n    <span style=\"color: #3366ff;\">model<\/span> score = hours \/ <span style=\"color: #3366ff;\">rmse<\/span> ;\n<span style=\"color: #800080;\">run<\/span> ;\n<span style=\"color: #800080;\">quit<\/span> ;\n\n<span style=\"color: #008000;\">\/*print RMSE of model*\/\n<\/span><span style=\"color: #800080;\">proc print<\/span> <span style=\"color: #3366ff;\">data<\/span> =outest;\n    <span style=\"color: #3366ff;\">var<\/span> _RMSE_;\n<span style=\"color: #800080;\">run<\/span> ;<\/span><\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-34702\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/rmse11.png\" alt=\"\u5728 SAS \u4e2d\u8ba1\u7b97 RMSE\" width=\"182\" height=\"96\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u8f93\u51fa\u4e2d\u4ec5\u663e\u793a RMSE \u503c<b>3.64093<\/b> \u3002<\/span><\/p>\n<p><span style=\"color: #000000;\"><strong>\u6ce8\u610f<\/strong>\uff1a <strong>proc reg<\/strong>\u4e2d\u7684<strong>noprint<\/strong>\u53c2\u6570\u544a\u8bc9 SAS \u4e0d\u8981\u50cf\u4e0a\u4e00\u6b65\u90a3\u6837\u6253\u5370\u6574\u4e2a\u56de\u5f52\u7ed3\u679c\u8f93\u51fa\u3002<\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>\u5176\u4ed6\u8d44\u6e90<\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u6559\u7a0b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u5176\u4ed6\u5e38\u89c1\u4efb\u52a1\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><a href=\"https:\/\/statorials.org\/cn\/sas\u4e2d\u7684\u7b80\u5355\u7ebf\u6027\u56de\u5f52\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u7b80\u5355\u7ebf\u6027\u56de\u5f52<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/sas\u4e2d\u7684\u591a\u5143\u7ebf\u6027\u56de\u5f52\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u591a\u5143\u7ebf\u6027\u56de\u5f52<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/sas\u4e2d\u7684\u591a\u9879\u5f0f\u56de\u5f52\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u591a\u9879\u5f0f\u56de\u5f52<\/a><br \/><a href=\"https:\/\/statorials.org\/cn\/\u6c14\u95f8\u4e2d\u7684\u903b\u8f91\u56de\u5f52\/\" target=\"_blank\" rel=\"noopener\">\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u903b\u8f91\u56de\u5f52<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8bc4\u4f30\u56de\u5f52\u6a21\u578b\u5bf9\u6570\u636e\u96c6\u7684\u62df\u5408\u7a0b\u5ea6\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u8ba1\u7b97\u5747\u65b9\u8bef\u5dee\uff0c\u5b83\u662f\u4e00\u4e2a\u6307\u6807\uff0c\u544a\u8bc9\u6211\u4eec\u6a21\u578b\u7684\u9884\u6d4b\u503c\u4e0e\u6570\u636e\u96c6\u7684\u5b9e\u9645\u503c\u4e4b\u95f4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-4431","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5982\u4f55\u5728 SAS \u4e2d\u8ba1\u7b97 RMSE - Statorials<\/title>\n<meta name=\"description\" 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