{"id":1748,"date":"2023-07-25T03:37:36","date_gmt":"2023-07-25T03:37:36","guid":{"rendered":"https:\/\/statorials.org\/ko\/aic%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-r%e1%84%85%e1%85%a9\/"},"modified":"2023-07-25T03:37:36","modified_gmt":"2023-07-25T03:37:36","slug":"aic%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-r%e1%84%85%e1%85%a9","status":"publish","type":"post","link":"https:\/\/statorials.org\/ko\/aic%e1%84%8b%e1%85%a6%e1%84%89%e1%85%a5-r%e1%84%85%e1%85%a9\/","title":{"rendered":"R\uc5d0\uc11c aic\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">AIC(Akaike Information Criterion)\ub294 \uc5ec\ub7ec \ud68c\uadc0 \ubaa8\ub378\uc758 \uc801\ud569\uc131\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uce21\uc815\ud56d\ubaa9\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">AIC = 2K \u2013 <em>2ln<\/em> (L)<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uae08:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>K:<\/strong> \ubaa8\ub378 \ub9e4\uac1c\ubcc0\uc218\uc758 \uc218\uc785\ub2c8\ub2e4. K\uc758 \uae30\ubcf8\uac12\uc740 2\uc774\ubbc0\ub85c \uc608\uce21 \ubcc0\uc218\uac00 \ud558\ub098\ub9cc \uc788\ub294 \ubaa8\ub378\uc758 K \uac12\uc740 2+1 = 3\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong><em>ln<\/em> (L)<\/strong> : \ubaa8\ub378\uc758 \ub85c\uadf8 \uc6b0\ub3c4\uc785\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \ud1b5\uacc4 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \uc774 \uac12\uc744 \uc790\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">AIC\ub294 \ub370\uc774\ud130\uc758 \uac00\uc7a5 \ud070 \ubcc0\ud654\ub97c \uc124\uba85\ud558\ub294 \ubaa8\ub378\uc744 \ucc3e\ub294 \ub3d9\uc2dc\uc5d0 \uacfc\ub3c4\ud55c \uc218\uc758 \ub9e4\uac1c\ubcc0\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \ubaa8\ub378\uc5d0 \ud398\ub110\ud2f0\ub97c \uc801\uc6a9\ud558\ub3c4\ub85d \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc5ec\ub7ec \ud68c\uadc0 \ubaa8\ub378\uc744 \uc801\uc6a9\ud55c \ud6c4\uc5d0\ub294<\/span> <span style=\"color: #000000;\">\uac01 \ubaa8\ub378\uc758 AIC \uac12\uc744 \ube44\uad50\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. AIC\uac00 \ub0ae\uc744\uc218\ub85d \uc801\ud569\ud55c \ubaa8\ub378\uc785\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">R\uc5d0\uc11c \ub2e4\uc911 \ud68c\uadc0 \ubaa8\ub378\uc758 AIC\ub97c \uacc4\uc0b0\ud558\ub824\uba74 <strong>AICcmodavg<\/strong> \ud328\ud0a4\uc9c0\uc758 <strong>aictab()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \uc608\uc5d0\uc11c\ub294 \uc774 \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec R\uc758 \ub2e4\uc591\ud55c \ud68c\uadc0 \ubaa8\ub378\uc5d0 \ub300\ud55c AIC\ub97c \uacc4\uc0b0\ud558\uace0 \ud574\uc11d\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\uc608: R\uc5d0\uc11c AIC \uacc4\uc0b0 \ubc0f \ud574\uc11d<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\"><strong>mtcars<\/strong> \ub370\uc774\ud130\uc138\ud2b8\uc758 \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc138 \uac00\uc9c0 \ub2e4\ub978 <a href=\"https:\/\/statorials.org\/ko\/\u1103\u1161\u110c\u116e\u11bc-\u1109\u1165\u11ab\u1112\u1167\u11bc-\u1112\u116c\u1100\u1171\/\" target=\"_blank\" rel=\"noopener\">\ub2e4\uc911 \uc120\ud615 \ud68c\uadc0 \ubaa8\ub378\uc744<\/a> \uc801\ud569\ud654\ud55c\ub2e4\uace0 \uac00\uc815\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uac01 \ubaa8\ub378\uc5d0\uc11c \uc0ac\uc6a9\ud560 \uc608\uce21 \ubcc0\uc218\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 1\uc758 \uc608\uce21 \ubcc0\uc218: disp, hp, wt, qsec<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 2\uc758 \uc608\uce21 \ubcc0\uc218: disp, qsec<\/span><\/li>\n<li> <span style=\"color: #000000;\">\ubaa8\ub378 3\uc758 \uc608\uce21 \ubcc0\uc218: disp, wt<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c \ucf54\ub4dc\ub294 \uc774\ub7ec\ud55c \uac01 \ud68c\uadc0 \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;\">#fit three models\n<\/span>model1 &lt;- lm(mpg ~ disp + hp + wt + qsec, data = mtcars)\nmodel2 &lt;- lm(mpg ~ disp + qsec, data = mtcars)\nmodel3 &lt;- lm(mpg ~ disp + wt, data = mtcars)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\ub2e4\uc74c\uc73c\ub85c \ubaa8\ub378\uc744 \ubaa9\ub85d\uc5d0 \ub123\uace0 <strong>aictab()<\/strong> \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uc5ec \uac01 \ubaa8\ub378\uc758 AIC\ub97c \uacc4\uc0b0\ud569\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> (AICcmodavg)<\/span>\n\n#define list of models\n<\/span>models &lt;- list(model1, model2, model3)\n\n<span style=\"color: #008080;\">#specify model names\n<\/span>mod.names &lt;- c('disp.hp.wt.qsec', 'disp.qsec', 'disp.wt')\n\n<span style=\"color: #008080;\">#calculate AIC of each model\n<\/span>aictab(cand.set = models, modnames = mod.names)\n\nModel selection based on AICc:\n\n                K AICc Delta_AICc AICcWt Cum.Wt LL\ndisp.hp.wt.qsec 6 162.43 0.00 0.83 0.83 -73.53\navailable wt 4 165.65 3.22 0.17 1.00 -78.08\ndisp.qsec 4 173.32 10.89 0.00 1.00 -81.92\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;\"><b>K:<\/b> \ubaa8\ub378\uc758 \ub9e4\uac1c\ubcc0\uc218 \uc218\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>AICc:<\/strong> \ubaa8\ub378\uc758 AIC \uac12\uc785\ub2c8\ub2e4. \uc18c\ubb38\uc790 &#8220;c&#8221;\ub294 \uc791\uc740 \uc0d8\ud50c\uc5d0 \ub300\ud574 \uc218\uc815\ub41c AIC\uc5d0\uc11c AIC\uac00 \uacc4\uc0b0\ub418\uc5c8\uc74c\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>Delta_AICc:<\/strong> \ucd5c\uc0c1\uc758 \ubaa8\ub378\uc758 AIC\uc640 \ud604\uc7ac \ubaa8\ub378\uc758 AIC \uac04\uc758 \ucc28\uc774\ub97c \ube44\uad50\ud569\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>AICcWt:<\/strong> \ubaa8\ub378\uc5d0\uc11c \ucc3e\uc744 \uc218 \uc788\ub294 \uc804\uccb4 \uc608\uce21\ub825\uc758 \ube44\uc728\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>Cum.Wt<\/strong> : AIC \uac00\uc911\uce58\uc758 \ub204\uc801 \ud569\uacc4\uc785\ub2c8\ub2e4.<\/span><\/li>\n<li> <span style=\"color: #000000;\"><span style=\"color: #000000;\"><b>LL:<\/b> \ubaa8\ub378\uc758 \ub85c\uadf8 \uac00\ub2a5\uc131\uc785\ub2c8\ub2e4. \uc774\ub294 \uc6b0\ub9ac\uac00 \uc0ac\uc6a9\ud55c \ub370\uc774\ud130\ub97c \ubc14\ud0d5\uc73c\ub85c \ubaa8\ub378\uc774 \uc5bc\ub9c8\ub098 \uac00\ub2a5\uc131\uc774 \uc788\ub294\uc9c0 \uc54c\ub824\uc90d\ub2c8\ub2e4.<\/span><\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">AIC \uac12\uc774 \uac00\uc7a5 \ub0ae\uc740 \ubaa8\ub378\uc774 \ud56d\uc0c1 \uba3c\uc800 \ub098\uc5f4\ub429\ub2c8\ub2e4. \uacb0\uacfc\uc5d0\uc11c \ub2e4\uc74c \ubaa8\ub378\uc758 AIC \uac12\uc774 \uac00\uc7a5 \ub0ae\uc73c\ubbc0\ub85c \uac00\uc7a5 \uc801\ud569\ud55c \ubaa8\ub378\uc784\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<p> <span style=\"color: #000000;\">mpg = \u03b2 <sub>0<\/sub> + \u03b2 <sub>1<\/sub> (disp) + \u03b2 <sub>2<\/sub> (hp) + \u03b2 <sub>3<\/sub> (\uc911\ub7c9) + \u03b2 <sub>4<\/sub> (qsec)<\/span><\/p>\n<p> <span style=\"color: #000000;\">\uc774 \ubaa8\ub378\uc774 \uac00\uc7a5 \uc88b\uc740 \uac83\uc73c\ub85c \uc2dd\ubcc4\ub418\uba74 \ubaa8\ub378 \ud53c\ud305\uc744 \uc9c4\ud589\ud558\uace0 R-\uc81c\uacf1 \uac12 \ubc0f \ubca0\ud0c0 \uacc4\uc218\ub97c \ud3ec\ud568\ud55c \uacb0\uacfc\ub97c \ubd84\uc11d\ud558\uc5ec \uc608\uce21 \ubcc0\uc218 \uc138\ud2b8\uc640 <a href=\"https:\/\/statorials.org\/ko\/\u1107\u1167\u11ab\u1109\u116e-\u1109\u1165\u11af\u1106\u1167\u11bc-\u110b\u1173\u11bc\u1103\u1161\u11b8\/\" target=\"_blank\" rel=\"noopener\">\uc751\ub2f5 \ubcc0\uc218<\/a> \uac04\uc758 \uc815\ud655\ud55c \uad00\uacc4\ub97c \uacb0\uc815\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\ucd94\uac00 \ub9ac\uc18c\uc2a4<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1174-\u1103\u1161\u11ab\u1109\u116e\u11ab-\u1109\u1165\u11ab\u1112\u1167\u11bc-\u1112\u116c\u1100\u1171\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \ub2e8\uc21c \uc120\ud615 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <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\">R\uc5d0\uc11c \ub2e4\uc911 \uc120\ud615 \ud68c\uadc0\ub97c \uc218\ud589\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1166-\u1106\u1161\u11bd\u1102\u1173\u11ab-r-\u110c\u1166\u1100\u1169\u11b8\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c \uc870\uc815\ub41c R-\uc81c\uacf1\uc744 \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95<\/a><br \/> <a href=\"https:\/\/statorials.org\/ko\/r\u110b\u1166\u1109\u1165-\u1107\u1169\u1105\u1161\u1109\u1162\u11a8-cp\u1105\u1173\u11af-\u1100\u1168\u1109\u1161\u11ab\u1112\u1161\u1102\u1173\u11ab-\u1107\u1161\u11bc\u1107\u1165\u11b8\/\" target=\"_blank\" rel=\"noopener\">R\uc5d0\uc11c Mallows Cp\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>AIC(Akaike Information Criterion)\ub294 \uc5ec\ub7ec \ud68c\uadc0 \ubaa8\ub378\uc758 \uc801\ud569\uc131\uc744 \ube44\uad50\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uce21\uc815\ud56d\ubaa9\uc785\ub2c8\ub2e4. \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ub429\ub2c8\ub2e4. AIC = 2K \u2013 2ln (L) \uae08: K: \ubaa8\ub378 \ub9e4\uac1c\ubcc0\uc218\uc758 \uc218\uc785\ub2c8\ub2e4. K\uc758 \uae30\ubcf8\uac12\uc740 2\uc774\ubbc0\ub85c \uc608\uce21 \ubcc0\uc218\uac00 \ud558\ub098\ub9cc \uc788\ub294 \ubaa8\ub378\uc758 K \uac12\uc740 2+1 = 3\uc785\ub2c8\ub2e4. ln (L) : \ubaa8\ub378\uc758 \ub85c\uadf8 \uc6b0\ub3c4\uc785\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \ud1b5\uacc4 \uc18c\ud504\ud2b8\uc6e8\uc5b4\ub294 \uc774 \uac12\uc744 \uc790\ub3d9\uc73c\ub85c \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. AIC\ub294 \ub370\uc774\ud130\uc758 [&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-1748","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 AIC\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) - \ud1b5\uacc4<\/title>\n<meta name=\"description\" content=\"\uc774 \ud29c\ud1a0\ub9ac\uc5bc\uc5d0\uc11c\ub294 R\uc758 \ud68c\uadc0 \ubaa8\ub378\uc5d0 \ub300\ud55c AIC(Akaike Information Criterion)\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95\uc744 \uc608\uc81c\uc640 \ud568\uaed8 \uc124\uba85\ud569\ub2c8\ub2e4.\" \/>\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\/ko\/aic\u110b\u1166\u1109\u1165-r\u1105\u1169\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R\uc5d0\uc11c AIC\ub97c \uacc4\uc0b0\ud558\ub294 \ubc29\ubc95(\uc608\uc81c \ud3ec\ud568) - 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