{"id":1226,"date":"2023-07-27T05:41:59","date_gmt":"2023-07-27T05:41:59","guid":{"rendered":"https:\/\/statorials.org\/cn\/r%e4%b8%ad%e7%9a%84%e9%9a%8f%e6%9c%ba%e9%92%bb%e5%8f%96\/"},"modified":"2023-07-27T05:41:59","modified_gmt":"2023-07-27T05:41:59","slug":"r%e4%b8%ad%e7%9a%84%e9%9a%8f%e6%9c%ba%e9%92%bb%e5%8f%96","status":"publish","type":"post","link":"https:\/\/statorials.org\/cn\/r%e4%b8%ad%e7%9a%84%e9%9a%8f%e6%9c%ba%e9%92%bb%e5%8f%96\/","title":{"rendered":"\u5982\u4f55\u5728 r \u4e2d\u521b\u5efa\u968f\u673a\u68ee\u6797\uff08\u9010\u6b65\uff09"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u5f53\u4e00\u7ec4\u9884\u6d4b\u53d8\u91cf\u548c<a href=\"https:\/\/statorials.org\/cn\/\u53d8\u91cf\u89e3\u91ca\u6027\u53cd\u5e94\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u54cd\u5e94\u53d8\u91cf<\/a>\u4e4b\u95f4\u7684\u5173\u7cfb\u975e\u5e38\u590d\u6742\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u975e\u7ebf\u6027\u65b9\u6cd5\u5bf9\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u8fdb\u884c\u5efa\u6a21\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\u662f\u6784\u5efa <a href=\"https:\/\/statorials.org\/cn\/\u5206\u7c7b\u548c\u56de\u5f52\u6811\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u51b3\u7b56\u6811<\/a>\u3002\u7136\u800c\uff0c\u4f7f\u7528\u5355\u4e2a\u51b3\u7b56\u6811\u7684\u7f3a\u70b9\u662f\u5b83\u5f80\u5f80\u4f1a\u906d\u53d7 <a href=\"https:\/\/statorials.org\/cn\/\u504f\u5dee\u65b9\u5dee\u6298\u8877\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u9ad8\u65b9\u5dee\u7684<\/a>\u5f71\u54cd\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4e5f\u5c31\u662f\u8bf4\uff0c\u5982\u679c\u6211\u4eec\u5c06\u6570\u636e\u96c6\u5206\u6210\u4e24\u534a\u5e76\u5c06\u51b3\u7b56\u6811\u5e94\u7528\u4e8e\u4e24\u534a\uff0c\u7ed3\u679c\u53ef\u80fd\u4f1a\u975e\u5e38\u4e0d\u540c\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u7528\u6765\u51cf\u5c11\u5355\u4e2a\u51b3\u7b56\u6811\u65b9\u5dee\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u6784\u5efa<a href=\"https:\/\/statorials.org\/cn\/\u968f\u673a\u6f14\u4e60\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u968f\u673a\u68ee\u6797\u6a21\u578b<\/a>\uff0c\u5176\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong>\u4ece\u539f\u59cb\u6570\u636e\u96c6\u4e2d\u83b7\u53d6<em>b \u4e2a<\/em>\u5f15\u5bfc\u6837\u672c\u3002<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2.<\/strong>\u4e3a\u6bcf\u4e2a\u5f15\u5bfc\u6837\u672c\u521b\u5efa\u51b3\u7b56\u6811\u3002<\/span><\/p>\n<ul>\n<li><span style=\"color: #000000;\">\u6784\u5efa\u6811\u65f6\uff0c\u6bcf\u6b21\u8003\u8651\u62c6\u5206\u65f6\uff0c\u4ec5\u5c06<em>m \u4e2a<\/em>\u9884\u6d4b\u53d8\u91cf\u7684\u968f\u673a\u6837\u672c\u89c6\u4e3a\u4ece<em>p \u4e2a<\/em>\u9884\u6d4b\u53d8\u91cf\u7684\u5b8c\u6574\u96c6\u5408\u4e2d\u8fdb\u884c\u62c6\u5206\u7684\u5019\u9009\u8005\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u9009\u62e9<em>m<\/em>\u7b49\u4e8e<span style=\"text-decoration: overline;\"><em>\u221ap<\/em><\/span> \u3002<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>3.<\/strong>\u5bf9\u6bcf\u68f5\u6811\u7684\u9884\u6d4b\u8fdb\u884c\u5e73\u5747\u4ee5\u83b7\u5f97\u6700\u7ec8\u6a21\u578b\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4e8b\u5b9e\u8bc1\u660e\uff0c\u968f\u673a\u68ee\u6797\u5f80\u5f80\u4f1a\u4ea7\u751f\u6bd4\u5355\u4e2a\u51b3\u7b56\u6811\u751a\u81f3<a href=\"https:\/\/statorials.org\/cn\/r\u4e2d\u7684\u88c5\u888b\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u888b\u88c5\u6a21\u578b<\/a>\u66f4\u51c6\u786e\u7684\u6a21\u578b\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u672c\u6559\u7a0b\u63d0\u4f9b\u4e86\u5982\u4f55\u5728 R \u4e2d\u4e3a\u6570\u636e\u96c6\u521b\u5efa\u968f\u673a\u68ee\u6797\u6a21\u578b\u7684\u5206\u6b65\u793a\u4f8b\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c1\u6b65\uff1a\u52a0\u8f7d\u5fc5\u8981\u7684\u5305<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u9996\u5148\uff0c\u6211\u4eec\u5c06\u52a0\u8f7d\u672c\u793a\u4f8b\u6240\u9700\u7684\u5305\u3002\u5bf9\u4e8e\u8fd9\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u6211\u4eec\u53ea\u9700\u8981\u4e00\u4e2a\u5305\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (randomForest)\n<\/strong><\/pre>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c2\u6b65\uff1a\u8c03\u6574\u968f\u673a\u68ee\u6797\u6a21\u578b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u540d\u4e3a<strong>\u201c\u7a7a\u6c14\u8d28\u91cf\u201d<\/strong>\u7684\u5185\u7f6e R \u6570\u636e\u96c6\uff0c\u5176\u4e2d\u5305\u542b\u7ebd\u7ea6\u5e02 153 \u5929\u7684\u7a7a\u6c14\u8d28\u91cf\u6d4b\u91cf\u503c\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#view structure of air quality dataset<\/span>\nstr(airquality)\n\n'data.frame': 153 obs. of 6 variables:\n $ Ozone: int 41 36 12 18 NA 28 23 19 8 NA ...\n $Solar.R: int 190 118 149 313 NA NA 299 99 19 194 ...\n $ Wind: num 7.4 8 12.6 11.5 14.3 14.9 8.6 13.8 20.1 8.6 ...\n $ Temp: int 67 72 74 62 56 66 65 59 61 69 ...\n $Month: int 5 5 5 5 5 5 5 5 5 5 ...\n $Day: int 1 2 3 4 5 6 7 8 9 10 ...\n\n<span style=\"color: #008080;\">#find number of rows with missing values\n<\/span>sum(! <span style=\"color: #3366ff;\">complete<\/span> . <span style=\"color: #3366ff;\">cases<\/span> (airquality))\n\n[1] 42\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u8be5\u6570\u636e\u96c6\u6709 42 \u884c\u5b58\u5728\u7f3a\u5931\u503c\u3002\u56e0\u6b64\uff0c\u5728\u62df\u5408\u968f\u673a\u68ee\u6797\u6a21\u578b\u4e4b\u524d\uff0c\u6211\u4eec\u5c06\u7528\u5217\u4e2d\u4f4d\u6570\u586b\u5145\u6bcf\u5217\u4e2d\u7684\u7f3a\u5931\u503c\uff1a<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace NAs with column medians\n<\/span><span style=\"color: #008000;\">for<\/span> (i <span style=\"color: #008000;\">in<\/span> 1: <span style=\"color: #3366ff;\">ncol<\/span> (air quality)) {\n  airquality[,i][ <span style=\"color: #3366ff;\">is<\/span> . <span style=\"color: #3366ff;\">na<\/span> (airquality[, i])] &lt;- <span style=\"color: #3366ff;\">median<\/span> (airquality[, i], <span style=\"color: #3366ff;\">na<\/span> . <span style=\"color: #3366ff;\">rm<\/span> = <span style=\"color: #008000;\">TRUE<\/span> )\n}\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\"><strong>\u76f8\u5173\uff1a<\/strong><\/span> <a href=\"https:\/\/statorials.org\/cn\/\u4f30\u7b97-r-\u4e2d\u7684\u7f3a\u5931\u503c\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u5982\u4f55\u5728R\u4e2d\u4f30\u7b97\u7f3a\u5931\u503c<\/a><\/p>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528<a href=\"https:\/\/cran.r-project.org\/web\/packages\/randomForest\/randomForest.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">randomForest<\/a>\u5305\u4e2d\u7684<strong>randomForest()<\/strong>\u51fd\u6570\u5728 R \u4e2d\u62df\u5408\u968f\u673a\u68ee\u6797\u6a21\u578b\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#make this example reproducible\n<\/span>set.seed(1)\n\n<span style=\"color: #008080;\">#fit the random forest model\n<\/span>model &lt;- randomForest(\n  formula = Ozone ~ .,\n  data = airquality\n)\n\n<span style=\"color: #008080;\">#display fitted model\n<\/span>model\n\nCall:\n randomForest(formula = Ozone ~ ., data = airquality) \n               Type of random forest: regression\n                     Number of trees: 500\nNo. of variables tried at each split: 1\n\n          Mean of squared residuals: 327.0914\n                    % Var explained: 61\n\n<span style=\"color: #008080;\">#find number of trees that produce lowest test MSE\n<\/span>which.min(model$mse)\n\n[1] 82\n\n<span style=\"color: #008080;\">#find RMSE of best model\n<\/span>sqrt(model$mse[ <span style=\"color: #3366ff;\">which<\/span> . <span style=\"color: #3366ff;\">min<\/span> (model$mse)]) \n\n[1] 17.64392\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u4ece\u7ed3\u679c\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u4ea7\u751f\u6700\u4f4e\u6d4b\u8bd5\u5747\u65b9\u8bef\u5dee (MSE) \u7684\u6a21\u578b\u4f7f\u7528\u4e86<strong>82<\/strong>\u68f5\u6811\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u8fd8\u53ef\u4ee5\u770b\u5230\u8be5\u6a21\u578b\u7684\u5747\u65b9\u6839\u8bef\u5dee\u4e3a<strong>17.64392<\/strong> \u3002<\/span><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a\u81ed\u6c27\u9884\u6d4b\u503c\u4e0e\u5b9e\u9645\u89c2\u6d4b\u503c\u4e4b\u95f4\u7684\u5e73\u5747\u5dee\u5f02\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u6839\u636e\u6240\u4f7f\u7528\u7684\u6811\u7684\u6570\u91cf\u751f\u6210 MSE \u6d4b\u8bd5\u56fe\uff1a<\/span><\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#plot the MSE test by number of trees\n<\/span>plot(model)\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-12143 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/aleatoireforetr1.png\" alt=\"\u901a\u8fc7 R \u4e2d\u968f\u673a\u68ee\u6797\u4e2d\u7684\u6811\u6728\u6570\u91cf\u6d4b\u8bd5 MSE\" width=\"449\" height=\"439\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<strong>varImpPlot()<\/strong>\u51fd\u6570\u521b\u5efa\u4e00\u4e2a\u56fe\uff0c\u663e\u793a\u6700\u7ec8\u6a21\u578b\u4e2d\u6bcf\u4e2a\u9884\u6d4b\u53d8\u91cf\u7684\u91cd\u8981\u6027\uff1a<\/span> <\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#produce variable importance plot<\/span>\nvarImpPlot(model) \n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-12144 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/aleatoireforetr2.png\" alt=\"R \u4e2d\u7684\u968f\u673a\u68ee\u6797\" width=\"424\" height=\"442\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\">x \u8f74\u663e\u793a\u56de\u5f52\u6811\u8282\u70b9\u7eaf\u5ea6\u7684\u5e73\u5747\u589e\u91cf\uff0c\u4f5c\u4e3a y \u8f74\u4e0a\u663e\u793a\u7684\u4e0d\u540c\u9884\u6d4b\u53d8\u91cf\u7684\u5206\u5272\u51fd\u6570\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4ece\u56fe\u4e2d\u6211\u4eec\u53ef\u4ee5\u770b\u5230<em>Wind<\/em>\u662f\u6700\u91cd\u8981\u7684\u9884\u6d4b\u53d8\u91cf\uff0c\u7d27\u968f\u5176\u540e\u7684\u662f<em>Temp<\/em> \u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c\u4e09\u6b65\uff1a\u8c03\u6574\u6a21\u578b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c <strong>randomForest()<\/strong>\u51fd\u6570\u4f7f\u7528 500 \u68f5\u6811\u548c\uff08\u603b\u9884\u6d4b\u53d8\u91cf\/3\uff09\u968f\u673a\u9009\u62e9\u7684\u9884\u6d4b\u53d8\u91cf\u4f5c\u4e3a\u6bcf\u6b21\u5206\u5272\u7684\u6f5c\u5728\u5019\u9009\u53d8\u91cf\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<strong>tuneRF()<\/strong>\u51fd\u6570\u8c03\u6574\u8fd9\u4e9b\u53c2\u6570\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u4ee5\u4e0b\u4ee3\u7801\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528\u4ee5\u4e0b\u89c4\u8303\u627e\u5230\u6700\u4f73\u6a21\u578b\uff1a<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>ntreeTry\uff1a<\/strong>\u8981\u6784\u5efa\u7684\u6811\u7684\u6570\u91cf\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>mtryStart\uff1a<\/strong>\u6bcf\u6b21\u5212\u5206\u65f6\u8981\u8003\u8651\u7684\u9884\u6d4b\u53d8\u91cf\u7684\u521d\u59cb\u6570\u91cf\u3002<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>stepFactor\uff1a<\/strong>\u589e\u52a0\u56e0\u5b50\uff0c\u76f4\u5230\u4f30\u8ba1\u7684\u888b\u5916\u8bef\u5dee\u505c\u6b62\u6539\u5584\u4e00\u5b9a\u91cf\u3002<\/span><\/li>\n<li><span style=\"color: #000000;\"><strong>\u6539\u5584\uff1a<\/strong>\u4e3a\u4e86\u7ee7\u7eed\u589e\u52a0\u6b65\u957f\u56e0\u5b50\uff0c\u5fc5\u987b\u6539\u5584\u888b\u5b50\u51fa\u53e3\u8bef\u5dee\u7684\u91cf\u3002<\/span><\/li>\n<\/ul>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>model_tuned &lt;- tuneRF(\n               x=airquality[,-1], <span style=\"color: #008080;\">#define predictor variables<\/span>\n               y=airquality$Ozone, <span style=\"color: #008080;\">#define response variable<\/span>\n               ntreeTry= <span style=\"color: #008000;\">500<\/span> ,\n               mtryStart= <span style=\"color: #008000;\">4<\/span> , \n               stepFactor= <span style=\"color: #008000;\">1.5<\/span> ,\n               improve= <span style=\"color: #008000;\">0.01<\/span> ,\n               trace= <span style=\"color: #008000;\">FALSE<\/span> <span style=\"color: #008080;\">#don't show real-time progress<\/span>\n               )\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u6b64\u51fd\u6570\u751f\u6210\u4ee5\u4e0b\u56fe\uff0c\u5176\u4e2d\u663e\u793a\u5728 x \u8f74\u4e0a\u6784\u5efa\u6811\u65f6\u6bcf\u6b21\u5206\u5272\u4f7f\u7528\u7684\u9884\u6d4b\u53d8\u91cf\u7684\u6570\u91cf\uff0c\u4ee5\u53ca y \u8f74\u4e0a\u4f30\u8ba1\u7684\u888b\u5916\u8bef\u5dee\uff1a<\/span> <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-12145 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/aleatoireforetr3.png\" alt=\"R\u4e2d\u968f\u673a\u68ee\u6797\u6a21\u578b\u7684OOB\u8bef\u5dee\" width=\"433\" height=\"378\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p><span style=\"color: #000000;\">\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u6784\u5efa\u6811\u65f6\uff0c\u5728\u6bcf\u6b21\u5206\u5272\u65f6\u4f7f\u7528<strong>2 \u4e2a<\/strong>\u968f\u673a\u9009\u62e9\u7684\u9884\u6d4b\u53d8\u91cf\u53ef\u4ee5\u83b7\u5f97\u6700\u4f4e\u7684 OOB \u8bef\u5dee\u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u8fd9\u5b9e\u9645\u4e0a\u5bf9\u5e94\u4e8e\u521d\u59cb<strong>randomForest()<\/strong>\u51fd\u6570\u4f7f\u7528\u7684\u9ed8\u8ba4\u8bbe\u7f6e\uff08\u603b\u9884\u6d4b\u53d8\u91cf\/3 = 6\/3 = 2\uff09\u3002<\/span><\/p>\n<h3><span style=\"color: #000000;\"><strong>\u7b2c 4 \u6b65\uff1a\u4f7f\u7528\u6700\u7ec8\u6a21\u578b\u8fdb\u884c\u9884\u6d4b<\/strong><\/span><\/h3>\n<p><span style=\"color: #000000;\">\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8c03\u6574\u540e\u7684\u968f\u673a\u68ee\u6797\u6a21\u578b\u6765\u5bf9\u65b0\u7684\u89c2\u5bdf\u7ed3\u679c\u8fdb\u884c\u9884\u6d4b\u3002<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define new observation\n<\/span>new &lt;- data.frame(Solar.R=150, Wind=8, Temp=70, Month=5, Day=5)\n\n<span style=\"color: #008080;\">#use fitted bagged model to predict Ozone value of new observation\n<\/span>predict(model, newdata=new)\n\n27.19442\n<\/strong><\/pre>\n<p><span style=\"color: #000000;\">\u6839\u636e\u9884\u6d4b\u53d8\u91cf\u7684\u503c\uff0c\u62df\u5408\u7684\u968f\u673a\u68ee\u6797\u6a21\u578b\u9884\u6d4b\u8fd9\u4e00\u5929\u7684\u81ed\u6c27\u503c\u4e3a<b>27.19442<\/b> \u3002<\/span><\/p>\n<p><span style=\"color: #000000;\">\u6b64\u793a\u4f8b\u4e2d\u4f7f\u7528\u7684\u5b8c\u6574 R \u4ee3\u7801\u53ef\u4ee5<a href=\"https:\/\/github.com\/Statorials\/R-Guides\/blob\/main\/random_forest.R\" target=\"_blank\" rel=\"noopener noreferrer\">\u5728\u6b64\u5904<\/a>\u627e\u5230\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u4e00\u7ec4\u9884\u6d4b\u53d8\u91cf\u548c\u54cd\u5e94\u53d8\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u975e\u5e38\u590d\u6742\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u975e\u7ebf\u6027\u65b9\u6cd5\u5bf9\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u8fdb\u884c\u5efa\u6a21\u3002 \u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\u662f [&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-1226","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 R \u4e2d\u521b\u5efa\u968f\u673a\u68ee\u6797\uff08\u9010\u6b65\uff09<\/title>\n<meta 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