{"id":4582,"date":"2023-07-09T22:48:50","date_gmt":"2023-07-09T22:48:50","guid":{"rendered":"https:\/\/statorials.org\/cn\/sas%e4%b8%ad%e7%9a%84%e4%b8%bb%e6%88%90%e5%88%86%e5%88%86%e6%9e%90\/"},"modified":"2023-07-09T22:48:50","modified_gmt":"2023-07-09T22:48:50","slug":"sas%e4%b8%ad%e7%9a%84%e4%b8%bb%e6%88%90%e5%88%86%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/sas%e4%b8%ad%e7%9a%84%e4%b8%bb%e6%88%90%e5%88%86%e5%88%86%e6%9e%90\/","title":{"rendered":"\u5982\u4f55\u5728 sas \u4e2d\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u4e3b\u6210\u5206\u5206\u6790 (PCA) \u662f\u4e00\u79cd <a href=\"https:\/\/statorials.org\/cn\/\u76d1\u7763\u5b66\u4e60\u4e0e\u65e0\u76d1\u7763\u5b66\u4e60\/\" target=\"_blank\" rel=\"noopener\">\u65e0\u76d1\u7763<\/a>\u673a\u5668\u5b66\u4e60\u6280\u672f\uff0c\u65e8\u5728\u5bfb\u627e\u4e3b\u6210\u5206\uff08\u9884\u6d4b\u53d8\u91cf\u7684\u7ebf\u6027\u7ec4\u5408\uff09\u6765\u89e3\u91ca\u6570\u636e\u96c6\u4e2d\u7684\u5927\u90e8\u5206\u53d8\u5316\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u5728 SAS \u4e2d\u6267\u884c PCA \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528<strong>PROC PRINCOMP<\/strong>\u8bed\u53e5\uff0c\u8be5\u8bed\u53e5\u4f7f\u7528\u4ee5\u4e0b\u57fa\u672c\u8bed\u6cd5\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #800080;\">proc princomp<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data <span style=\"color: #3366ff;\">out<\/span> =out_data <span style=\"color: #3366ff;\">outstat<\/span> =stats;\n    <span style=\"color: #3366ff;\">var<\/span> var1 var2 var3;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u662f\u6bcf\u6761\u6307\u4ee4\u7684\u4f5c\u7528\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>data<\/strong> \uff1a\u7528\u4e8e PCA \u7684\u6570\u636e\u96c6\u7684\u540d\u79f0<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>out<\/strong> \uff1a\u8981\u521b\u5efa\u7684\u6570\u636e\u96c6\u7684\u540d\u79f0\uff0c\u5176\u4e2d\u5305\u542b\u6240\u6709\u539f\u59cb\u6570\u636e\u52a0\u4e0a\u4e3b\u6210\u5206\u5206\u6570<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>outstat<\/strong> \uff1a\u6307\u5b9a\u5e94\u521b\u5efa\u5305\u542b\u5747\u503c\u3001\u6807\u51c6\u5dee\u3001\u76f8\u5173\u7cfb\u6570\u3001\u7279\u5f81\u503c\u548c\u7279\u5f81\u5411\u91cf\u7684\u6570\u636e\u96c6\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>var<\/strong> \uff1a\u8f93\u5165\u6570\u636e\u96c6\u4e2d\u7528\u4e8e PCA \u7684\u53d8\u91cf\u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u5206\u6b65\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5b9e\u8df5\u4e2d\u4f7f\u7528<strong>PROC PRINCOMP<\/strong>\u8bed\u53e5\u5728 SAS \u4e2d\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790\u3002<\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>\u7b2c 1 \u6b65\uff1a\u521b\u5efa\u6570\u636e\u96c6<\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u5047\u8bbe\u6211\u4eec\u6709\u4ee5\u4e0b\u6570\u636e\u96c6\uff0c\u5176\u4e2d\u5305\u542b 20 \u540d\u7bee\u7403\u8fd0\u52a8\u5458\u7684\u5404\u79cd\u4fe1\u606f\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> my_data;\n    <span style=\"color: #3366ff;\">input<\/span> points assists rebounds;\n    <span style=\"color: #3366ff;\">datalines<\/span> ;\n22 8 4\n29 7 3\n10 4 12\n5 5 15\n35 6 2\n8 3 10\n10 4 8\n8 4 3\n2 5 17\n4 5 19\n9 9 4\n7 6 4\n31 5 3\n4 6 13\n5 7 8\n8 8 4\n10 4 8\n20 4 6\n25 8 8\n18 8 3\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> =my_data;<\/strong> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35751 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pcasas1.png\" alt=\"\" width=\"247\" height=\"525\" srcset=\"\" sizes=\"auto, \"><\/p>\n<h2><span style=\"color: #000000;\"><strong>\u6b65\u9aa4 2\uff1a\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790<\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<strong>PROC PRINCOMP<\/strong>\u8bed\u53e5\u4f7f\u7528\u6570\u636e\u96c6\u7684<strong>point<\/strong> \u3001 <strong>Assists<\/strong>\u548c<strong>ounces<\/strong>\u53d8\u91cf\u6765\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790\uff1a<\/span><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #800080;\"><span style=\"color: #008000;\">\/*perform principal components analysis*\/<\/span>\nproc princomp<\/span> <span style=\"color: #3366ff;\">data<\/span> =my_data <span style=\"color: #3366ff;\">out<\/span> =out_data <span style=\"color: #3366ff;\">outstat<\/span> =stats;\n    <span style=\"color: #3366ff;\">var<\/span> points assists rebounds;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8f93\u51fa\u7684\u7b2c\u4e00\u90e8\u5206\u663e\u793a\u5404\u79cd\u63cf\u8ff0\u6027\u7edf\u8ba1\u6570\u636e\uff0c\u5305\u62ec\u6bcf\u4e2a\u8f93\u5165\u53d8\u91cf\u7684\u5e73\u5747\u503c\u548c\u6807\u51c6\u5dee\u3001\u76f8\u5173\u77e9\u9635\u4ee5\u53ca\u7279\u5f81\u503c\u548c\u7279\u5f81\u5411\u91cf\u7684\u503c\uff1a<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35752 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pcasas2.png\" alt=\"\" width=\"380\" height=\"647\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u8f93\u51fa\u7684\u4e0b\u4e00\u90e8\u5206\u663e\u793a<strong>\u788e\u77f3\u56fe<\/strong>\u548c<strong>\u89e3\u91ca\u65b9\u5dee<\/strong>\u56fe\uff1a<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35753 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pcasas3.png\" alt=\"\" width=\"650\" height=\"371\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u5f53\u6211\u4eec\u6267\u884c PCA \u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u60f3\u8981\u4e86\u89e3\u6bcf\u4e2a\u4e3b\u6210\u5206\u53ef\u4ee5\u89e3\u91ca\u6570\u636e\u96c6\u4e2d\u603b\u53d8\u5f02\u7684\u767e\u5206\u6bd4\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6807\u9898\u4e3a<strong>\u201c\u76f8\u5173\u77e9\u9635\u7279\u5f81\u503c\u201d<\/strong>\u7684\u7ed3\u679c\u8868\u4f7f\u6211\u4eec\u80fd\u591f\u51c6\u786e\u5730\u770b\u5230\u6bcf\u4e2a\u4e3b\u6210\u5206\u89e3\u91ca\u4e86\u603b\u53d8\u5f02\u7684\u767e\u5206\u6bd4\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u7b2c\u4e00\u4e2a\u4e3b\u6210\u5206\u89e3\u91ca\u4e86\u6570\u636e\u96c6\u4e2d\u603b\u53d8\u5f02\u7684<strong>61.7%<\/strong> \u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u7b2c\u4e8c\u4e2a\u4e3b\u6210\u5206\u89e3\u91ca\u4e86\u6570\u636e\u96c6\u4e2d\u603b\u53d8\u5f02\u7684<strong>26.51%<\/strong> \u3002<\/span><\/li>\n<li><span style=\"color: #000000;\">\u7b2c\u4e09\u4e3b\u6210\u5206\u89e3\u91ca\u4e86\u6570\u636e\u96c6\u4e2d\u603b\u53d8\u5f02\u7684<strong>11.79%<\/strong> \u3002<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u8bf7\u6ce8\u610f\uff0c\u6240\u6709\u767e\u5206\u6bd4\u52a0\u8d77\u6765\u4e3a 100%\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u7136\u540e\uff0c\u6807\u9898\u4e3a<strong>\u201c\u65b9\u5dee\u89e3\u91ca\u201d\u7684<\/strong>\u56fe\u5141\u8bb8\u6211\u4eec\u53ef\u89c6\u5316\u8fd9\u4e9b\u503c\u3002<\/span><\/p>\n<p> <span style=\"color: #000000;\">x \u8f74\u663e\u793a\u4e3b\u6210\u5206\uff0cy \u8f74\u663e\u793a\u6bcf\u4e2a\u4e3b\u6210\u5206\u89e3\u91ca\u7684\u603b\u65b9\u5dee\u7684\u767e\u5206\u6bd4\u3002<\/span><\/p>\n<h2><span style=\"color: #000000;\"><strong>\u6b65\u9aa4 3\uff1a\u521b\u5efa\u53cc\u56fe\u6765\u53ef\u89c6\u5316\u7ed3\u679c<\/strong><\/span><\/h2>\n<p><span style=\"color: #000000;\">\u4e3a\u4e86\u53ef\u89c6\u5316\u7ed9\u5b9a\u6570\u636e\u96c6\u7684 PCA \u7ed3\u679c\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a<strong>\u53cc\u6807\u56fe<\/strong>\uff0c\u5b83\u662f\u5728\u7531\u524d\u4e24\u4e2a\u4e3b\u6210\u5206\u5f62\u6210\u7684\u5e73\u9762\u4e0a\u663e\u793a\u6570\u636e\u96c6\u4e2d\u7684\u6bcf\u4e2a\u89c2\u6d4b\u503c\u7684\u56fe\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u5728 SAS \u4e2d\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u6765\u521b\u5efa\u53cc\u56fe\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">\/*create dataset with column called <em>obs<\/em> to represent row numbers of original data*\/<\/span>\n<span style=\"color: #800080;\">data<\/span> biplot_data;\n   <span style=\"color: #3366ff;\">set<\/span> out_data;\n   obs=_n_;\n<span style=\"color: #800080;\">run<\/span> ;\n\n<span style=\"color: #008000;\">\/*create biplot using values from first two principal components*\/\n<\/span><span style=\"color: #800080;\">proc sgplot<\/span> <span style=\"color: #3366ff;\">data<\/span> =biplot_data;\n    <span style=\"color: #3366ff;\">scatter<\/span> <span style=\"color: #3366ff;\">x<\/span> =Prin1 <span style=\"color: #3366ff;\">y<\/span> =Prin2 \/ <span style=\"color: #3366ff;\">datalabel<\/span> =obs;\n<span style=\"color: #800080;\">run<\/span> ;<\/strong><\/span> <\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\" wp-image-35754 aligncenter\" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/pcasas4.png\" alt=\"\" width=\"601\" height=\"449\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">x \u8f74\u663e\u793a\u7b2c\u4e00\u4e3b\u6210\u5206\uff0cy \u8f74\u663e\u793a\u7b2c\u4e8c\u4e3b\u6210\u5206\uff0c\u6570\u636e\u96c6\u4e2d\u7684\u5404\u4e2a<a href=\"https:\/\/statorials.org\/cn\/\u7edf\u8ba1\u89c2\u5bdf\/\" target=\"_blank\" rel=\"noopener\">\u89c2\u6d4b\u503c<\/a>\u5728\u56fe\u5f62\u5185\u663e\u793a\u4e3a\u5c0f\u5706\u5708\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u56fe\u8868\u4e0a\u5e76\u6392\u7684\u89c2\u5bdf\u7ed3\u679c\u5bf9\u4e8e<strong>\u5f97\u5206<\/strong>\u3001<strong>\u52a9\u653b<\/strong>\u548c<strong>\u7bee\u677f<\/strong>\u8fd9\u4e09\u4e2a\u53d8\u91cf\u5177\u6709\u76f8\u4f3c\u7684\u503c\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4f8b\u5982\uff0c\u5728\u56fe\u7684\u6700\u5de6\u4fa7\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u89c2\u6d4b\u503c<strong>#9<\/strong>\u548c<strong>#10<\/strong>\u5f7c\u6b64\u975e\u5e38\u63a5\u8fd1\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u5982\u679c\u6211\u4eec\u53c2\u8003\u539f\u59cb\u6570\u636e\u96c6\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u8fd9\u4e9b\u89c2\u5bdf\u7ed3\u679c\u7684\u4ee5\u4e0b\u503c\uff1a<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\"><strong>\u89c2\u5bdf n\u00b09<\/strong> \uff1a2 \u5206\u30015 \u6b21\u52a9\u653b\u300117 \u4e2a\u7bee\u677f<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>\u89c2\u5bdf#10<\/strong> \uff1a4\u5206\u30015\u6b21\u52a9\u653b\u300119\u4e2a\u7bee\u677f<\/span><\/li>\n<\/ul>\n<p><span style=\"color: #000000;\">\u4e09\u4e2a\u53d8\u91cf\u4e2d\u6bcf\u4e2a\u53d8\u91cf\u7684\u503c\u90fd\u76f8\u4f3c\uff0c\u8fd9\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u8fd9\u4e9b\u89c2\u5bdf\u7ed3\u679c\u5728\u53cc\u56fe\u4e0a\u5f7c\u6b64\u5982\u6b64\u63a5\u8fd1\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u8fd8\u5728\u6807\u9898\u4e3a<strong>Correlation Matrix Eigenvalues \u7684<\/strong>\u7ed3\u679c\u8868\u4e2d\u770b\u5230\uff0c\u524d\u4e24\u4e2a\u4e3b\u6210\u5206\u5360\u6570\u636e\u96c6\u4e2d\u603b\u53d8\u5f02\u7684<strong>88.21%<\/strong> \u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u7531\u4e8e\u8fd9\u4e2a\u767e\u5206\u6bd4\u975e\u5e38\u9ad8\uff0c\u56e0\u6b64\u5206\u6790\u53cc\u56fe\u4e2d\u7684\u54ea\u4e9b\u89c2\u6d4b\u503c\u5f7c\u6b64\u63a5\u8fd1\u662f\u6709\u6548\u7684\uff0c\u56e0\u4e3a\u7ec4\u6210\u53cc\u56fe\u7684\u4e24\u4e2a\u4e3b\u8981\u6210\u5206\u51e0\u4e4e\u89e3\u91ca\u4e86\u6570\u636e\u96c6\u4e2d\u7684\u6240\u6709\u53d8\u5316\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\/\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>\u4e3b\u6210\u5206\u5206\u6790 (PCA) \u662f\u4e00\u79cd \u65e0\u76d1\u7763\u673a\u5668\u5b66\u4e60\u6280\u672f\uff0c\u65e8\u5728\u5bfb\u627e\u4e3b\u6210\u5206\uff08\u9884\u6d4b\u53d8\u91cf\u7684\u7ebf\u6027\u7ec4\u5408\uff09\u6765\u89e3\u91ca\u6570\u636e\u96c6\u4e2d\u7684\u5927\u90e8\u5206 [&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-4582","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\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790 - Statorials<\/title>\n<meta name=\"description\" content=\"\u672c\u6559\u7a0b\u901a\u8fc7\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\u89e3\u91ca\u4e86\u5982\u4f55\u5728 SAS \u4e2d\u6267\u884c\u4e3b\u6210\u5206\u5206\u6790\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/cn\/sas\u4e2d\u7684\u4e3b\u6210\u5206\u5206\u6790\/\" \/>\n<meta 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