{"id":1171,"date":"2023-07-27T10:03:32","date_gmt":"2023-07-27T10:03:32","guid":{"rendered":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-%e1%84%80%e1%85%ad%e1%84%8e%e1%85%a1-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%b3%e1%86%bc%e1%84%8b%e1%85%b3%e1%86%af-%e1%84%89%e1%85%a2%e1%86%bc%e1%84%85\/"},"modified":"2023-07-27T10:03:32","modified_gmt":"2023-07-27T10:03:32","slug":"r%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-%e1%84%80%e1%85%ad%e1%84%8e%e1%85%a1-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%b3%e1%86%bc%e1%84%8b%e1%85%b3%e1%86%af-%e1%84%89%e1%85%a2%e1%86%bc%e1%84%85","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-%e1%84%80%e1%85%ad%e1%84%8e%e1%85%a1-%e1%84%80%e1%85%a5%e1%86%b7%e1%84%8c%e1%85%b3%e1%86%bc%e1%84%8b%e1%85%b3%e1%86%af-%e1%84%89%e1%85%a2%e1%86%bc%e1%84%85\/","title":{"rendered":"R\uc758 leave-one-out \uad50\ucc28 \uac80\uc99d(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \ub300\ud55c \ubaa8\ub378\uc758 \uc131\ub2a5\uc744 \ud3c9\uac00\ud558\ub824\uba74 \ubaa8\ub378\uc758 \uc608\uce21\uc774 \uad00\ucc30\ub41c \ub370\uc774\ud130\uc640 \uc5bc\ub9c8\ub098 \uc798 \uc77c\uce58\ud558\ub294\uc9c0 \uce21\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774\ub97c \uc218\ud589\ud558\uae30 \uc704\ud574 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c \uc811\uadfc \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\ub294 <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u11ab\u110b\u1175\u11af-\u1100\u116d\u110e\u1161-\u1100\u1165\u11b7\u110c\u1173\u11bc\u110b\u1173\u11af-\u1102\u1161\u11b7\u1100\u1167\u110c\u116e\u1109\u1166\u110b\u116d\/\" target=\"_blank\" rel=\"noopener noreferrer\">Leave-One-Out Cross-Validation(LOOCV)<\/a> \uc774\ub77c\uace0 \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong> \ud6c8\ub828 \uc138\ud2b8\uc758 \uc77c\ubd80\ub85c \ud558\ub098\uc758 \uad00\uce21\uce58\ub97c \uc81c\uc678\ud55c \ubaa8\ub4e0 \uad00\ucc30\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \uc138\ud2b8\ub97c \ud6c8\ub828 \uc138\ud2b8\uc640 \ud14c\uc2a4\ud2b8 \uc138\ud2b8\ub85c \ubd84\ud560\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2.<\/strong> \ud6c8\ub828 \uc138\ud2b8\uc758 \ub370\uc774\ud130\ub9cc \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378\uc744 \ub9cc\ub4ed\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>3.<\/strong> \ubaa8\ub378\uc744 \uc774\uc6a9\ud558\uc5ec \ubaa8\ub378\uc5d0\uc11c \uc81c\uc678\ub41c \uad00\uce21\uac12\uc758 \ubc18\uc751\uac12\uc744 \uc608\uce21\ud558\uace0 \ud3c9\uade0\uc81c\uacf1\uc624\ucc28(MSE)\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>4.<\/strong> \uc774 \uacfc\uc815\uc744 <em>n<\/em> \ubc88 \ubc18\ubcf5\ud569\ub2c8\ub2e4. \ubaa8\ub4e0 \ud14c\uc2a4\ud2b8 MSE\uc758 \ud3c9\uade0\uc73c\ub85c \ud14c\uc2a4\ud2b8 MSE\ub97c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">R\uc5d0\uc11c LOOCV\ub97c \uc2e4\ud589\ud558\ub294 \uac00\uc7a5 \uc26c\uc6b4 \ubc29\ubc95\uc740 R\uc758 <strong>\uce90\ub7ff<\/strong> \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0\uc11c <a href=\"https:\/\/www.rdocumentation.org\/packages\/caret\/versions\/6.0-86\/topics\/trainControl\" target=\"_blank\" rel=\"noopener noreferrer\">trainControl()<\/a> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 \uc774 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec R\uc758 \ud2b9\uc815 \ubaa8\ub378\uc5d0 \ub300\ud574 LOOCV\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud55c \ube60\ub978 \uc608\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608: R\uc758 Leave-One-Out \uad50\ucc28 \uac80\uc99d<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">R\uc5d0 \ub2e4\uc74c\uacfc \uac19\uc740 \ub370\uc774\ud130 \uc138\ud2b8\uac00 \uc788\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create data frame<\/span>\ndf &lt;- data.frame(y=c(6, 8, 12, 14, 14, 15, 17, 22, 24, 23),\n                 x1=c(2, 5, 4, 3, 4, 6, 7, 5, 8, 9),\n                 x2=c(14, 12, 12, 13, 7, 8, 7, 4, 6, 5))\n\n<span style=\"color: #008080;\">#view data frame\n<\/span>df\n\ny x1 x2\n6 2 14\n8 5 12\n12 4 12\n14 3 13\n14 4 7\n15 6 8\n17 7 7\n22 5 4\n24 8 6\n23 9 5\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u110c\u116e\u11bc-\u1109\u1165\u11ab\u1112\u1167\u11bc-\u1112\u116c\u1100\u1171-r\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc744<\/a> R\uc758 \uc774 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \ub9de\ucd94\uace0 LOOCV\ub97c \uc218\ud589\ud558\uc5ec \ubaa8\ub378 \uc131\ub2a5\uc744 \ud3c9\uac00\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #993300;\">library<\/span> (caret)<\/span>\n\n#specify the cross-validation method<\/span>\nctrl &lt;- trainControl(method = \" <span style=\"color: #008000;\">LOOCV<\/span> \")\n\n<span style=\"color: #008080;\">#fit a regression model and use LOOCV to evaluate performance\n<\/span>model &lt;- train(y ~ x1 + x2, data = df, method = \" <span style=\"color: #008000;\">lm<\/span> \", trControl = ctrl)\n\n<span style=\"color: #008080;\">#view summary of LOOCV               \n<\/span>print(model)\n\nLinear Regression \n\n10 samples\n 2 predictors\n\nNo pre-processing\nResampling: Leave-One-Out Cross-Validation \nSummary of sample sizes: 9, 9, 9, 9, 9, 9, ... \nResampling results:\n\n  RMSE Rsquared MAE     \n  3.619456 0.6186766 3.146155\n\nTuning parameter 'intercept' was held constant at a value of TRUE\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\ub97c \ud574\uc11d\ud558\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">10\uac1c\uc758 \uc11c\ub85c \ub2e4\ub978 \uc0d8\ud50c\uc744 \uc0ac\uc6a9\ud558\uc5ec 10\uac1c\uc758 \ubaa8\ub378\uc744 \uad6c\ucd95\ud588\uc2b5\ub2c8\ub2e4. \uac01 \ubaa8\ub378\uc740 2\uac1c\uc758 \uc608\uce21 \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud588\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uc804\ucc98\ub9ac\uac00 \uc218\ud589\ub418\uc9c0 \uc54a\uc558\uc2b5\ub2c8\ub2e4. \uc989, \ubaa8\ub378\uc744 \ud53c\ud305\ud558\uae30 \uc804\uc5d0 \uc5b4\ub5a4 \ubc29\uc2dd\uc73c\ub85c\ub4e0 <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1166\u1109\u1165-\u1103\u1166\u110b\u1175\u1110\u1165\u1105\u1173\u11af-\u110c\u1165\u11bc\u1100\u1172\u1112\u116a\u1112\u1161\u1102\u1173\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ub370\uc774\ud130\ub97c \ud655\uc7a5<\/a> \ud558\uc9c0 \uc54a\uc558\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">10\uac1c\uc758 \uc0d8\ud50c\uc744 \uc0dd\uc131\ud558\ub294 \ub370 \uc0ac\uc6a9\ud55c \ub9ac\uc0d8\ud50c\ub9c1 \ubc29\ubc95\uc740 Leave-One-Out \uad50\ucc28 \uac80\uc99d\uc774\uc5c8\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\uac01 \ud6c8\ub828 \uc138\ud2b8\uc758 \ud45c\ubcf8 \ud06c\uae30\ub294 9\uc600\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>RMSE:<\/strong> \uc81c\uacf1\ud3c9\uade0\uc81c\uacf1\uadfc \uc624\ub958. \uc774\ub294 \ubaa8\ub378\uc758 \uc608\uce21\uacfc \uc2e4\uc81c \uad00\ucc30 \uac04\uc758 \ud3c9\uade0 \ucc28\uc774\ub97c \uce21\uc815\ud569\ub2c8\ub2e4. RMSE\uac00 \ub0ae\uc744\uc218\ub85d \ubaa8\ub378\uc774 \uc2e4\uc81c \uad00\uce21\uce58\ub97c \ub354 \uc815\ud655\ud558\uac8c \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>Rsquared:<\/strong> \ubaa8\ub378\uc5d0 \uc758\ud55c \uc608\uce21\uacfc \uc2e4\uc81c \uad00\ucc30 \uac04\uc758 \uc0c1\uad00 \uad00\uacc4\ub97c \uce21\uc815\ud55c \uac83\uc785\ub2c8\ub2e4. R-\uc81c\uacf1\uc774 \ub192\uc744\uc218\ub85d \ubaa8\ub378\uc774 \uc2e4\uc81c \uad00\uce21\uce58\ub97c \ub354 \uc815\ud655\ud558\uac8c \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>MAE:<\/strong> \ud3c9\uade0 \uc808\ub300 \uc624\ucc28\uc785\ub2c8\ub2e4. \uc774\ub294 \ubaa8\ub378\uc5d0 \uc758\ud55c \uc608\uce21\uacfc \uc2e4\uc81c \uad00\ucc30 \uac04\uc758 \ud3c9\uade0 \uc808\ub300 \ucc28\uc774\uc785\ub2c8\ub2e4. MAE\uac00 \ub0ae\uc744\uc218\ub85d \ubaa8\ub378\uc774 \uc2e4\uc81c \uad00\uce21\uce58\ub97c \ub354 \uc815\ud655\ud558\uac8c \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\uacb0\uacfc\uc5d0 \uc81c\uacf5\ub41c \uc138 \uac00\uc9c0 \uce21\uc815\uac12(RMSE, R-\uc81c\uacf1 \ubc0f MAE) \uac01\uac01\uc740 \uac8c\uc2dc\ub418\uc9c0 \uc54a\uc740 \ub370\uc774\ud130\uc5d0 \ub300\ud55c \ubaa8\ub378 \uc131\ub2a5\uc5d0 \ub300\ud55c \uc544\uc774\ub514\uc5b4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc2e4\uc81c\ub85c \uc6b0\ub9ac\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc5ec\ub7ec \ub2e4\ub978 \ubaa8\ub378\uc744 \uc801\ud569\ud558\uace0 \uc5ec\uae30\uc5d0 \uc81c\uc2dc\ub41c \uacb0\uacfc\uc5d0\uc11c \uc81c\uacf5\ub418\ub294 \uc138 \uac00\uc9c0 \uce21\uc815\ud56d\ubaa9\uc744 \ube44\uad50\ud558\uc5ec \uc5b4\ub5a4 \ubaa8\ub378\uc774 \uac00\uc7a5 \ub0ae\uc740 \ud14c\uc2a4\ud2b8 \uc624\ub958\uc728\uc744 \uc0dd\uc131\ud558\ubbc0\ub85c \uc0ac\uc6a9\ud558\uae30\uc5d0 \uac00\uc7a5 \uc88b\uc740 \ubaa8\ub378\uc778\uc9c0 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ub370\uc774\ud130 \uc138\ud2b8\uc5d0 \ub300\ud55c \ubaa8\ub378\uc758 \uc131\ub2a5\uc744 \ud3c9\uac00\ud558\ub824\uba74 \ubaa8\ub378\uc758 \uc608\uce21\uc774 \uad00\ucc30\ub41c \ub370\uc774\ud130\uc640 \uc5bc\ub9c8\ub098 \uc798 \uc77c\uce58\ud558\ub294\uc9c0 \uce21\uc815\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774\ub97c \uc218\ud589\ud558\uae30 \uc704\ud574 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \ubc29\ubc95\uc740 \ub2e4\uc74c \uc811\uadfc \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\ub294 Leave-One-Out Cross-Validation(LOOCV) \uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. 1. \ud6c8\ub828 \uc138\ud2b8\uc758 \uc77c\ubd80\ub85c \ud558\ub098\uc758 \uad00\uce21\uce58\ub97c \uc81c\uc678\ud55c \ubaa8\ub4e0 \uad00\ucc30\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130 \uc138\ud2b8\ub97c \ud6c8\ub828 \uc138\ud2b8\uc640 \ud14c\uc2a4\ud2b8 \uc138\ud2b8\ub85c \ubd84\ud560\ud569\ub2c8\ub2e4. 2. \ud6c8\ub828 \uc138\ud2b8\uc758 \ub370\uc774\ud130\ub9cc \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378\uc744 \ub9cc\ub4ed\ub2c8\ub2e4. 3. \ubaa8\ub378\uc744 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-1171","post","type-post","status-publish","format-standard","hentry","category-20"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R\uc758 Leave-One-Out \uad50\ucc28 \uac80\uc99d(\uc608\uc81c \ud3ec\ud568)<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c Leave-One-Out \uad50\ucc28 \uac80\uc99d(LOOCV)\uc744 \uc218\ud589\ud558\ub294 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