{"id":1220,"date":"2023-07-27T05:56:29","date_gmt":"2023-07-27T05:56:29","guid":{"rendered":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%a6-%e1%84%83%e1%85%a1%e1%86%b7%e1%84%80%e1%85%b5\/"},"modified":"2023-07-27T05:56:29","modified_gmt":"2023-07-27T05:56:29","slug":"r%e1%84%8b%e1%85%a6-%e1%84%83%e1%85%a1%e1%86%b7%e1%84%80%e1%85%b5","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/r%e1%84%8b%e1%85%a6-%e1%84%83%e1%85%a1%e1%86%b7%e1%84%80%e1%85%b5\/","title":{"rendered":"R\uc5d0\uc11c \ubc30\uae45\uc744 \uc218\ud589\ud558\ub294 \ubc29\ubc95(\ub2e8\uacc4\ubcc4)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\ud2b9\uc815 \ub370\uc774\ud130\uc138\ud2b8\uc5d0 \ub300\ud55c <a href=\"https:\/\/statorials.org\/ko\/\u1107\u116e\u11ab\u1105\u1172-\u1106\u1175\u11be-\u1112\u116c\u1100\u1171-\u1110\u1173\u1105\u1175\/\" target=\"_blank\" rel=\"noopener noreferrer\">\uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c<\/a> \uc0dd\uc131\ud560 \ub54c \ub2e8\uc77c \uad50\uc721 \ub370\uc774\ud130\uc138\ud2b8\ub9cc \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378\uc744 \uad6c\ucd95\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uadf8\ub7ec\ub098 \ub2e8\uc77c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \uc0ac\uc6a9\ud560 \ub54c\uc758 \ub2e8\uc810\uc740 <a href=\"https:\/\/statorials.org\/ko\/\u1111\u1167\u11ab\u1112\u1163\u11bc-\u1107\u116e\u11ab\u1109\u1161\u11ab-\u110c\u1165\u11af\u110e\u116e\u11bc\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ub192\uc740 \ubd84\uc0b0<\/a> \uc73c\ub85c \uc778\ud574 \uc5b4\ub824\uc6c0\uc744 \uacaa\ub294 \uacbd\ud5a5\uc774 \uc788\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. \uc989, \ub370\uc774\ud130\uc138\ud2b8\ub97c \ub450 \ubd80\ubd84\uc73c\ub85c \ub098\ub204\uace0 \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \ub450 \ubd80\ubd84 \ubaa8\ub450\uc5d0 \uc801\uc6a9\ud558\uba74 \uacb0\uacfc\uac00 \ub9e4\uc6b0 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e8\uc77c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\uc758 \ubd84\uc0b0\uc744 \uc904\uc774\uae30 \uc704\ud574 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ud55c \uac00\uc9c0 \ubc29\ubc95\uc740 <a href=\"https:\/\/statorials.org\/ko\/\u1107\u1162\u1100\u1175\u11bc-\u1106\u1165\u1109\u1175\u11ab\u1105\u1165\u1102\u1175\u11bc\/\" target=\"_blank\" rel=\"noopener noreferrer\">\ubc30\uae45(Bagging)<\/a> \uc73c\ub85c, \ub54c\ub85c\ub294 <em>\ubd80\ud2b8\uc2a4\ud2b8\ub7a9 \uc9d1\uacc4(Bootstrap Aggregation)<\/em> \ub77c\uace0\ub3c4 \ud569\ub2c8\ub2e4.<\/span><\/p>\n<p data-slot-rendered-dynamic=\"true\"> <span style=\"color: #000000;\">\ubc30\uae45\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \uc791\ub3d9\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong> \uc6d0\ubcf8 \ub370\uc774\ud130 \uc138\ud2b8\uc5d0\uc11c <em>b<\/em> \ubd80\ud2b8\uc2a4\ud2b8\ub7a9 \uc0d8\ud50c\uc744 \uac00\uc838\uc635\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2.<\/strong> \uac01 \ubd80\ud2b8\uc2a4\ud2b8\ub7a9 \uc0d8\ud50c\uc5d0 \ub300\ud55c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \ub9cc\ub4ed\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>3.<\/strong> \uac01 \ud2b8\ub9ac\uc758 \uc608\uce21\uc744 \ud3c9\uade0\ud558\uc5ec \ucd5c\uc885 \ubaa8\ub378\uc744 \uc5bb\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc218\ubc31 \ub610\ub294 \uc218\ucc9c \uac1c\uc758 \uac1c\ubcc4 \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \uad6c\ucd95\ud558\uace0 \ubaa8\ub4e0 \ud2b8\ub9ac\uc758 \ud3c9\uade0 \uc608\uce21\uc744 \ucde8\ud568\uc73c\ub85c\uc368 \ub2e8\uc77c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\uc5d0 \ube44\ud574 \ud6e8\uc52c \ub0ae\uc740 \ud14c\uc2a4\ud2b8 \uc624\ub958\uc728\uc744 \uc0dd\uc131\ud558\ub294 \ud53c\ud305 \ubc31 \ubaa8\ub378\uc774 \ub418\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc5d0\uc11c \ubc30\uae45\ub41c \ubaa8\ub378\uc744 \uc0dd\uc131\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud55c \ub2e8\uacc4\ubcc4 \uc608\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>1\ub2e8\uacc4: \ud544\uc694\ud55c \ud328\ud0a4\uc9c0 \ub85c\ub4dc<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\uba3c\uc800 \uc774 \uc608\uc81c\uc5d0 \ud544\uc694\ud55c \ud328\ud0a4\uc9c0\ub97c \ub85c\ub4dc\ud569\ub2c8\ub2e4.<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #993300;\">library<\/span> (dplyr) <span style=\"color: #008080;\">#for data wrangling<\/span>\n<span style=\"color: #993300;\">library<\/span> (e1071) <span style=\"color: #008080;\">#for calculating variable importance<\/span>\n<span style=\"color: #993300;\">library<\/span> (caret) <span style=\"color: #008080;\">#for general model fitting<\/span>\n<span style=\"color: #993300;\">library<\/span> (rpart) <span style=\"color: #008080;\">#for fitting decision trees<\/span>\n<span style=\"color: #993300;\">library<\/span> (ipred) <span style=\"color: #008080;\">#for fitting bagged decision trees\n<\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>2\ub2e8\uacc4: \ubc30\uae45\ub41c \ubaa8\ub378 \ub9de\ucd94\uae30<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\uc774 \uc608\uc5d0\uc11c\ub294 \uac1c\ubcc4\uc801\uc73c\ub85c 153\uc77c \ub3d9\uc548 \ub274\uc695\uc2dc\uc758 \ub300\uae30 \uc9c8 \uce21\uc815\uac12\uc744 \ud3ec\ud568\ud558\ub294 <strong>Air Quality<\/strong> \ub77c\ub294 \uae30\ubcf8 \uc81c\uacf5 R \ub370\uc774\ud130 \uc138\ud2b8\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/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<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>ipred<\/strong> \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 <strong>bagging()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec R\uc5d0\uc11c \ubc30\uae45\ub41c \ubaa8\ub378\uc744 \ub9de\ucd94\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;\">#make this example reproducible\n<\/span>set.seed(1)\n\n<span style=\"color: #008080;\">#fit the bagged model\n<\/span>bag &lt;- bagging(\n  formula = Ozone ~ .,\n  data = airquality,\n  nbagg = <span style=\"color: #008000;\">150<\/span> ,   \n  coob = <span style=\"color: #008000;\">TRUE<\/span> ,\n  control = rpart. <span style=\"color: #3366ff;\">control<\/span> (minsplit = <span style=\"color: #008000;\">2<\/span> , cp = <span style=\"color: #008000;\">0<\/span> )\n)\n\n<span style=\"color: #008080;\">#display fitted bagged model\n<\/span>bag\n\nBagging regression trees with 150 bootstrap replications \n\nCall: bagging.data.frame(formula = Ozone ~ ., data = airquality, nbagg = 150, \n    coob = TRUE, control = rpart.control(minsplit = 2, cp = 0))\n\nOut-of-bag estimate of root mean squared error: 17.4973<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc6b0\ub9ac\ub294 \ubc30\uae45 \ubaa8\ub378\uc744 \uad6c\ucd95\ud558\uae30 \uc704\ud574 <strong>150\uac1c\uc758<\/strong> \ubd80\ud2b8\uc2a4\ud2b8\ub7a9 \uc0d8\ud50c\uc744 \uc0ac\uc6a9\ud558\uae30\ub85c \uc120\ud0dd\ud588\uace0 \ucd94\uc815\ub41c Out-of-bag \uc624\ub958\ub97c \uc5bb\uae30 \uc704\ud574 <strong>coob<\/strong> \uc774 <strong>TRUE<\/strong> \ub77c\uace0 \uc9c0\uc815\ud588\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub610\ud55c <strong>rpart.control()<\/strong> \ud568\uc218\uc5d0\uc11c \ub2e4\uc74c \uc0ac\uc591\uc744 \uc0ac\uc6a9\ud588\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>minsplit = 2:<\/strong> \ubd84\ud560\ud558\ub824\uba74 \ub178\ub4dc\uc5d0\uc11c 2\uac1c\uc758 \uad00\uce21\uce58\ub9cc \ud544\uc694\ud558\ub3c4\ub85d \ubaa8\ub378\uc5d0 \uc9c0\uc2dc\ud569\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>CP = 0<\/strong> . \uc774\uac83\uc774 \ubcf5\uc7a1\uc131 \ub9e4\uac1c\ubcc0\uc218\uc785\ub2c8\ub2e4. 0\uc73c\ub85c \uc124\uc815\ud558\uba74 \ubd84\ud560\uc744 \uc218\ud589\ud558\uae30 \uc704\ud574 \ubaa8\ub378\uc774 \uc5b4\ub5a4 \ubc29\uc2dd\uc73c\ub85c\ub4e0 \uc804\uccb4 \uc801\ud569\uc131\uc744 \ud5a5\uc0c1\ud560 \ud544\uc694\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ubcf8\uc9c8\uc801\uc73c\ub85c, \uc774 \ub450 \uac00\uc9c0 \uc8fc\uc7a5\uc740 \uac1c\ubcc4 \ub098\ubb34\uac00 \uadf9\ub3c4\ub85c \uae4a\uac8c \uc790\ub77c\ub3c4\ub85d \ud5c8\uc6a9\ud558\uc5ec \ubd84\uc0b0\uc740 \ub192\uc9c0\ub9cc \ud3b8\ud5a5\uc740 \ub0ae\uc740 \ub098\ubb34\ub85c \uc774\uc5b4\uc9d1\ub2c8\ub2e4. \uadf8\ub7f0 \ub2e4\uc74c \ubc30\uae45\uc744 \uc801\uc6a9\ud558\uba74 \ud3b8\ud5a5\uc744 \ub0ae\uac8c \uc720\uc9c0\ud558\uba74\uc11c \ucd5c\uc885 \ubaa8\ub378\uc758 \ubd84\uc0b0\uc744 \uc904\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ubaa8\ub378 \uacb0\uacfc\uc5d0\uc11c \ucd94\uc815 Out-of-Bag RMSE\uac00 <strong>17.4973<\/strong> \uc784\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc624\uc874 \uc608\uce21\uac12\uacfc \uc2e4\uc81c \uad00\uce21\uac12 \uac04\uc758 \ud3c9\uade0 \ucc28\uc774\uc785\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>3\ub2e8\uacc4: \uc608\uce21 \ubcc0\uc218\uc758 \uc911\uc694\uc131 \uc2dc\uac01\ud654<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ubc30\uae45 \ubaa8\ub378\uc740 \uac1c\ubcc4 \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ubcf4\ub2e4 \ub354 \uc815\ud655\ud55c \uc608\uce21\uc744 \uc81c\uacf5\ud558\ub294 \uacbd\ud5a5\uc774 \uc788\uc9c0\ub9cc, \uc801\ud569\ud55c \ubc30\uae45 \ubaa8\ub378\uc758 \uacb0\uacfc\ub97c \ud574\uc11d\ud558\uace0 \uc2dc\uac01\ud654\ud558\ub294 \uac83\uc740 \uc5b4\ub835\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uadf8\ub7ec\ub098 \ubaa8\ub4e0 \ud2b8\ub9ac\uc5d0 \ub300\ud574 \ud3c9\uade0\uc744 \ub0b8 \ud2b9\uc815 \uc608\uce21 \ubcc0\uc218\uc758 \ubd84\ud3ec\ub85c \uc778\ud55c RSS(\uc794\ucc28 \uc81c\uacf1\ud569)\uc758 \ucd1d \uac10\uc18c\ub97c \uacc4\uc0b0\ud558\uc5ec \uc608\uce21 \ubcc0\uc218\uc758 \uc911\uc694\uc131\uc744 \uc2dc\uac01\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac12\uc774 \ud074\uc218\ub85d \uc608\uce21 \ubcc0\uc218\uac00 \ub354 \uc911\uc694\ud574\uc9d1\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 <strong>\uce90\ub7ff<\/strong> \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 <strong>varImp()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc7a5\ucc29\ub41c \uac00\ubc29 \ubaa8\ub378\uc5d0 \ub300\ud55c \ubcc0\uc218 \uc911\uc694\ub3c4 \ud50c\ub86f\uc744 \uc0dd\uc131\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;\">#calculate variable importance\n<\/span>VI &lt;- data.frame(var= <span style=\"color: #3366ff;\">names<\/span> (airquality[,-1]), imp= <span style=\"color: #3366ff;\">varImp<\/span> (bag))\n\n<span style=\"color: #008080;\">#sort variable importance descending\n<\/span>VI_plot &lt;- VI[ <span style=\"color: #3366ff;\">order<\/span> (VI$Overall, decreasing= <span style=\"color: #008000;\">TRUE<\/span> ),]\n\n<span style=\"color: #008080;\">#visualize variable importance with horizontal bar plot\n<\/span>barplot(VI_plot$Overall,\n        names.arg= <span style=\"color: #3366ff;\">rownames<\/span> (VI_plot),\n        horiz= <span style=\"color: #008000;\">TRUE<\/span> ,\n        col=' <span style=\"color: #008000;\">steelblue<\/span> ',\n        xlab=' <span style=\"color: #008000;\">Variable Importance<\/span> ')\n<\/strong><\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-12115 \" src=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/sac1.png\" alt=\"R\uc758 \ubcc0\uc218 \uc911\uc694\ub3c4 \uadf8\ub798\ud504\" width=\"424\" height=\"392\" srcset=\"\" sizes=\"auto, \"><\/p>\n<p> <span style=\"color: #000000;\"><strong>Solar.R\uc740<\/strong> \ubaa8\ub378\uc5d0\uc11c \uac00\uc7a5 \uc911\uc694\ud55c \uc608\uce21 \ubcc0\uc218\uc774\uace0 <strong>\uc6d4\uc740<\/strong> \uac00\uc7a5 \ub35c \uc911\uc694\ud558\ub2e4\ub294 \uac83\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>4\ub2e8\uacc4: \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc608\uce21\ud558\uae30<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\ub9c8\uc9c0\ub9c9\uc73c\ub85c, Fitted Bag \ubaa8\ub378\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc0c8\ub85c\uc6b4 \uad00\uce21\uac12\uc744 \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/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(bag, newdata=new)\n\n24.4866666666667\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\uc608\uce21 \ubcc0\uc218\uc758 \uac12\uc744 \uae30\ubc18\uc73c\ub85c Fitted Bag \ubaa8\ub378\uc740 \ud2b9\uc815 \ub0a0\uc9dc\uc758 \uc624\uc874 \uac12\uc774 <strong>24,487\uc774<\/strong> \ub420 \uac83\uc73c\ub85c \uc608\uce21\ud569\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \uc608\uc81c\uc5d0 \uc0ac\uc6a9\ub41c \uc804\uccb4 R \ucf54\ub4dc\ub294 <a href=\"https:\/\/github.com\/Statorials\/R-Guides\/blob\/main\/bagging.R\" target=\"_blank\" rel=\"noopener noreferrer\">\uc5ec\uae30\uc5d0\uc11c<\/a> \ucc3e\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud2b9\uc815 \ub370\uc774\ud130\uc138\ud2b8\uc5d0 \ub300\ud55c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \uc0dd\uc131\ud560 \ub54c \ub2e8\uc77c \uad50\uc721 \ub370\uc774\ud130\uc138\ud2b8\ub9cc \uc0ac\uc6a9\ud558\uc5ec \ubaa8\ub378\uc744 \uad6c\ucd95\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \ub2e8\uc77c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \uc0ac\uc6a9\ud560 \ub54c\uc758 \ub2e8\uc810\uc740 \ub192\uc740 \ubd84\uc0b0 \uc73c\ub85c \uc778\ud574 \uc5b4\ub824\uc6c0\uc744 \uacaa\ub294 \uacbd\ud5a5\uc774 \uc788\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. \uc989, \ub370\uc774\ud130\uc138\ud2b8\ub97c \ub450 \ubd80\ubd84\uc73c\ub85c \ub098\ub204\uace0 \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\ub97c \ub450 \ubd80\ubd84 \ubaa8\ub450\uc5d0 \uc801\uc6a9\ud558\uba74 \uacb0\uacfc\uac00 \ub9e4\uc6b0 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2e8\uc77c \uc758\uc0ac\uacb0\uc815 \ud2b8\ub9ac\uc758 \ubd84\uc0b0\uc744 \uc904\uc774\uae30 \uc704\ud574 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \ud55c [&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-1220","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\uc5d0\uc11c \ubc30\uae45\ud558\ub294 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