{"id":691,"date":"2026-01-05T16:21:53","date_gmt":"2026-01-05T07:21:53","guid":{"rendered":"http:\/\/waurimal.kr\/?p=691"},"modified":"2026-01-05T16:21:55","modified_gmt":"2026-01-05T07:21:55","slug":"chap-39-%ea%b5%ac%ec%a1%b0%eb%b0%a9%ec%a0%95%ec%8b%9d-%eb%aa%a8%ed%98%95%ec%97%90-%eb%8c%80%ed%95%9c-%ea%b8%b0%ea%b3%84%ed%95%99%ec%8a%b5%ec%a0%81-%ec%a0%91%ea%b7%bc-%ec%84%a4%eb%aa%85%ea%b3%bc","status":"publish","type":"post","link":"http:\/\/waurimal.kr\/?p=691","title":{"rendered":"Chap 39. \uad6c\uc870\ubc29\uc815\uc2dd \ubaa8\ud615\uc5d0 \ub300\ud55c \uae30\uacc4\ud559\uc2b5\uc801 \uc811\uadfc: \uc124\uba85\uacfc \uc608\uce21\uc758 \uc735\ud569"},"content":{"rendered":"\n<p>\uc548\ub155\ud558\uc138\uc694, \uc774\ubc88\uc5d0\ub294 \uc6b0\ub9ac\uac00 \uadf8\ub3d9\uc548 \ubc30\uc6e0\ub358 <strong>\uad6c\uc870\ubc29\uc815\uc2dd \ubaa8\ud615(SEM)<\/strong>\uc774\ub77c\ub294 \ud0c4\ud0c4\ud55c \uc774\ub860\uc801 \ud2c0\uc5d0, \ucd5c\uadfc \ub370\uc774\ud130 \uacfc\ud559\uc758 \ud575\uc2ec\uc778 <strong>\uae30\uacc4\ud559\uc2b5(Machine Learning)<\/strong>\uc744 \uc5b4\ub5bb\uac8c \uacb0\ud569\ud560 \uc218 \uc788\ub294\uc9c0 \ub2e4\ub8e8\uc5b4 \ubcf4\ub824\uace0 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>&#8220;\uc774\ub860 \uac80\uc99d\ud558\ub824\uba74 SEM\uc744 \uc4f0\uace0, \uc608\uce21\ud558\ub824\uba74 \uba38\uc2e0\ub7ec\ub2dd\uc744 \uc4f0\ub294 \uac70 \uc544\ub2cc\uac00\uc694?&#8221;\ub77c\uace0 \uc0dd\uac01\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub9de\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc5f0\uad6c\ub97c \ud558\ub2e4 \ubcf4\uba74 <strong>&#8220;\uc774\ub860\uc740 \uc788\ub294\ub370 \ubb54\uac00 \ub370\uc774\ud130\uc5d0 \uc228\uaca8\uc9c4 \ud328\ud134\uc774 \ub354 \uc788\uc744 \uac83 \uac19\ub2e4&#8221;<\/strong>\ub294 \uc0dd\uac01\uc774 \ub4e4 \ub54c\uac00 \uc788\uc8e0? \ubc14\ub85c \uadf8 \uc9c0\uc810, <strong>\uc774\ub860 \uac1c\ubc1c(Theory Development)<\/strong> \ub2e8\uacc4\uc5d0\uc11c \uc774 \ub450 \uac00\uc9c0\uc758 \ub9cc\ub0a8\uc774 \ube5b\uc744 \ubc1c\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774 \ub0b4\uc6a9\uc5d0 \ub300\ud574 \uc6b0\ub9ac \uad50\uc721\ud559 \ubd84\uc57c\uc758 \uc608\uc2dc\ub97c \uacc1\ub4e4\uc5ec \uc544\uc8fc \uc0c1\uc138\ud558\uac8c \ud480\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ubd84\uc11d \ub3c4\uad6c\ub294 <strong>jamovi<\/strong>\ub97c \uae30\ubcf8\uc73c\ub85c \ud558\ub418, \ud604\uc7ac jamovi\uc758 GUI\ub9cc\uc73c\ub85c\ub294 \uad6c\ud604\uc774 \uc5b4\ub824\uc6b4 \uace0\uae09 \uae30\uacc4\ud559\uc2b5 \uae30\ub2a5(Regularized SEM, SEM Trees)\uc740 <strong>R<\/strong> \ucf54\ub4dc\ub97c \ud1b5\ud574 \uad6c\ud604\ud558\ub294 \ubc29\ubc95\uc744 \ubcf4\uc5ec\ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. \uc65c SEM\uc5d0 \uae30\uacc4\ud559\uc2b5\uc744 \uc11e\ub098\uc694?<\/h2>\n\n\n\n<p>\uc6b0\ub9ac\uac00 \uc5f0\uad6c\ub97c \uc218\ud589\ud558\ub294 \uacfc\uc815\uc740 \ud06c\uac8c \uc138 \ub2e8\uacc4\ub85c \ub098\ub269\ub2c8\ub2e4.<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\uc774\ub860 \uc0dd\uc131 (Theory Generation):<\/strong> \uc544\ubb34\uac83\ub3c4 \ubaa8\ub97c \ub54c \uac00\uc124\uc744 \ub9cc\ub4dc\ub294 \ub2e8\uacc4 (\uc8fc\ub85c \ud0d0\uc0c9\uc801 \uc694\uc778\ubd84\uc11d EFA \uc0ac\uc6a9).<\/li>\n\n\n\n<li><strong>\uc774\ub860 \ud3c9\uac00 (Theory Appraisal):<\/strong> \uc774\ub860\uc774 \ub9de\ub294\uc9c0 \ud655\uc778\ud558\ub294 \ub2e8\uacc4 (\uc8fc\ub85c \ud655\uc778\uc801 \uc694\uc778\ubd84\uc11d CFA, SEM \uc0ac\uc6a9).<\/li>\n\n\n\n<li><strong>\uc774\ub860 \uac1c\ubc1c (Theory Development):<\/strong> \uc774 \ub458 \uc0ac\uc774\uc758 \uc911\uac04 \ub2e8\uacc4. \uc774\ub860\uc758 \ubf08\ub300\ub294 \uc788\uc9c0\ub9cc, \uc138\ubd80\uc801\uc778 \uacbd\ub85c\ub97c \uc218\uc815\ud558\uac70\ub098 \uc228\uaca8\uc9c4 \uc774\uc9c8\uc131\uc744 \ucc3e\uace0 \uc2f6\uc744 \ub54c\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<p>\uae30\uc874\uc758 SEM\uc740 &#8220;\uc774 \ubaa8\ud615\uc774 \ucc38\uc774\ub2e4&#8221;\ub77c\uace0 \uac00\uc815\ud558\uace0 \uc801\ud569\ub3c4\ub97c \ubcf4\uc9c0\ub9cc, \uae30\uacc4\ud559\uc2b5\uc740 &#8220;\uc5b4\ub5a4 \ubaa8\ud615\uc774 \ubbf8\ub798 \ub370\uc774\ud130\ub97c \uac00\uc7a5 \uc798 \uc608\uce21\ud558\ub294\uac00?&#8221;\uc5d0 \ucd08\uc810\uc744 \ub461\ub2c8\ub2e4. \uc774 \ub458\uc744 \uc11e\uc73c\uba74, <strong>\uc774\ub860\uc801 \uc124\uba85\ub825<\/strong>\uc744 \uc783\uc9c0 \uc54a\uc73c\uba74\uc11c\ub3c4 \ub370\uc774\ud130\uac00 \ub9d0\ud574\uc8fc\ub294 <strong>\uc0c8\ub85c\uc6b4 \ud328\ud134(\uc608\uce21\ub825)<\/strong>\uc744 \ucc3e\uc544\ub0b4\uc5b4 \uc774\ub860\uc744 \uc815\uad50\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc624\ub298 \ubc30\uc6b8 \ud575\uc2ec \ubb34\uae30\ub294 \ub450 \uac00\uc9c0\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\uc815\uaddc\ud654\ub41c SEM (Regularized SEM):<\/strong> \ubcc0\uc218\uac00 \ub108\ubb34 \ub9ce\uc744 \ub54c \uc9c4\uc9dc \uc911\uc694\ud55c \uacbd\ub85c\ub9cc \ub0a8\uae30\ub294 \ubc29\ubc95.<\/li>\n\n\n\n<li><strong>SEM \ud2b8\ub9ac (SEM Trees):<\/strong> \ub370\uc774\ud130 \uc548\uc5d0 \uc228\uaca8\uc9c4 \ud558\uc704 \uc9d1\ub2e8\uc744 \uc790\ub3d9\uc73c\ub85c \ucc3e\uc544\uc8fc\ub294 \ubc29\ubc95.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">2. \uc815\uaddc\ud654\ub41c SEM (Regularized SEM): &#8220;\ubcf5\uc7a1\ud55c \uac74 \ub531 \uc9c8\uc0c9\uc774\uc57c&#8221;<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \uac1c\ub150 \uc774\ud574\ud558\uae30<\/h3>\n\n\n\n<p>\uc5ec\ub7ec\ubd84\uc774 &#8216;\ud559\uc5c5 \uc131\ucde8\ub3c4&#8217;\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \uc694\uc778\uc744 \uc5f0\uad6c\ud55c\ub2e4\uace0 \ud574\ubd05\uc2dc\ub2e4. \uac00\uc815\ud658\uacbd, \uce5c\uad6c \uad00\uacc4, \uc2a4\ub9c8\ud2b8\ud3f0 \uc2dc\uac04, \ub3c5\uc11c\ub7c9, \uc218\uba74 \uc2dc\uac04&#8230; \ud6c4\ubcf4 \ubcc0\uc218\ub9cc 50\uac1c\uac00 \ub118\uc2b5\ub2c8\ub2e4. \uc774\uac78 \ub2e4 \ub123\uace0 SEM\uc744 \ub3cc\ub9ac\uba74? \ubaa8\ud615\uc774 \ud130\uc9c0\uac70\ub098(\uc801\ud569\ub3c4 \uc5c9\ub9dd), \ub2e4\uc911\uacf5\uc120\uc131 \ub54c\ubb38\uc5d0 \ud574\uc11d\uc774 \ubd88\uac00\ub2a5\ud574\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774\ub54c <strong>Regularized SEM<\/strong>\uc740 \ubaa8\ud615\uc758 \uc801\ud569\ub3c4 \ud568\uc218(<math data-latex=\"F_{ML}\"><semantics><msub><mi>F<\/mi><mrow><mi>M<\/mi><mi>L<\/mi><\/mrow><\/msub><annotation encoding=\"application\/x-tex\">F_{ML}<\/annotation><\/semantics><\/math>)\uc5d0 <strong>\ubc8c\uc810(Penalty, <\/strong><math data-latex=\"\\lambda\"><semantics><mi>\u03bb<\/mi><annotation encoding=\"application\/x-tex\">\\lambda<\/annotation><\/semantics><\/math><strong>)<\/strong>\uc744 \ubd80\uacfc\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p><math data-latex=\"F_{lasso} = F_{ML} + \\lambda \\sum |\\beta|\"><semantics><mrow><msub><mi>F<\/mi><mrow><mi>l<\/mi><mi>a<\/mi><mi>s<\/mi><mi>s<\/mi><mi>o<\/mi><\/mrow><\/msub><mo>=<\/mo><msub><mi>F<\/mi><mrow><mi>M<\/mi><mi>L<\/mi><\/mrow><\/msub><mo>+<\/mo><mi>\u03bb<\/mi><mo movablelimits=\"false\">\u2211<\/mo><mi>|<\/mi><mi>\u03b2<\/mi><mi>|<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">F_{lasso} = F_{ML} + \\lambda \\sum |\\beta|<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<p>\uc27d\uac8c \ub9d0\ud574, <strong>&#8220;\ud68c\uadc0\uacc4\uc218(<\/strong><math data-latex=\"\\beta\"><semantics><mi>\u03b2<\/mi><annotation encoding=\"application\/x-tex\">\\beta<\/annotation><\/semantics><\/math><strong>)\uac00 0\uc774 \uc544\ub2c8\uba74 \ubc8c\uc810\uc744 \uc8fc\uaca0\ub2e4!&#8221;<\/strong>\ub294 \uac81\ub2c8\ub2e4. \ubaa8\ud615\uc740 \uc801\ud569\ub3c4\ub3c4 \uc88b\uac8c \ud558\uba74\uc11c \ubc8c\uc810\ub3c4 \ud53c\ud574\uc57c \ud558\ub2c8, <strong>\uc815\ub9d0 \uc911\uc694\ud55c \ubcc0\uc218\uc758 \uacc4\uc218\ub9cc \ub0a8\uae30\uace0 \ub098\uba38\uc9c0\ub294 0\uc73c\ub85c \ub9cc\ub4e4\uc5b4\ubc84\ub9bd\ub2c8\ub2e4(Variable Selection)<\/strong>. \uc774\uac83\uc774 \ubc14\ub85c <strong>Lasso(\ub77c\uc3d8)<\/strong> \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ridge(\ub9bf\uc9c0):<\/strong> \uacc4\uc218\ub97c 0\uc73c\ub85c \ub9cc\ub4e4\uc9c0\ub294 \uc54a\uace0 \uc791\uac8c\ub9cc \ub9cc\ub4ed\ub2c8\ub2e4. \ubcc0\uc218 \uac04 \uc0c1\uad00\uad00\uacc4\uac00 \ub192\uc744 \ub54c \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>Elastic Net:<\/strong> Lasso\uc640 Ridge\ub97c \uc11e\uc740 \uac83\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \uc5b8\uc81c \uc4f0\ub098\uc694?<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ubcc0\uc218\uac00 \ub108\ubb34 \ub9ce\uc744 \ub54c:<\/strong> \ud0d0\uc0c9\uc801\uc73c\ub85c \uc911\uc694\ud55c \uacbd\ub85c\ub97c \ucc3e\uace0 \uc2f6\uc744 \ub54c.<\/li>\n\n\n\n<li><strong>\uc0d8\ud50c \uc218\uac00 \uc801\uc744 \ub54c:<\/strong> \uc77c\ubc18\uc801\uc778 SEM\ubcf4\ub2e4 \ucd94\uc815 \uc624\ucc28\uac00 \uc801\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc218\uc815\uc9c0\uc218(Modification Indices)\uc758 \ub300\uc548:<\/strong> \uc218\uc815\uc9c0\uc218\ub294 \ud558\ub098\uc529 \uacbd\ub85c\ub97c \ucd94\uac00\ud558\ub294(Forward) \ubc29\uc2dd\uc774\uc9c0\ub9cc, Regularization\uc740 \ub2e4 \ub123\uace0 \uccd0\ub0b4\ub294(Backward) \ubc29\uc2dd\uc774\ub77c \ub354 \uc804\uccb4\uc801\uc778 \uad00\uc810\uc744 \uac00\uc9d1\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. SEM \ud2b8\ub9ac (SEM Trees): &#8220;\ub108\ud76c\ub4e4\uc740 \uc11c\ub85c \ub2e4\ub978 \uc131\uc7a5 \uace1\uc120\uc744 \uadf8\ub9ac\ub294\uad6c\ub098&#8221;<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \uac1c\ub150 \uc774\ud574\ud558\uae30<\/h3>\n\n\n\n<p>\uc6b0\ub9ac\uac00 &#8216;\uc7a0\uc7ac\uc131\uc7a5\ubaa8\ud615&#8217;\uc73c\ub85c \ud559\uc0dd\ub4e4\uc758 \uc131\uc801 \ubcc0\ud654\ub97c \ubcf8\ub2e4\uace0 \ud569\uc2dc\ub2e4. \ubcf4\ud1b5\uc740 \uc131\ubcc4(\ub0a8\/\uc5ec)\ub85c \uc9d1\ub2e8\uc744 \ub098\ub220\uc11c \ube44\uad50\ud558\uc8e0(\ub2e4\uc911\uc9d1\ub2e8 \ubd84\uc11d). \uadf8\ub7f0\ub370 \ub9cc\uc57d <strong>&#8220;\uacbd\uc81c\uc801 \uc218\uc900\uc774 \ub0ae\uc73c\uba74\uc11c \ub3c5\uc11c\ub97c \uc548 \ud558\ub294 \ud559\uc0dd\ub4e4&#8221;<\/strong>\ub9cc \uc131\uc801\uc774 \ub5a8\uc5b4\uc9c4\ub2e4\uba74\uc694? \uc774\ub7f0 \ubcf5\uc7a1\ud55c \uc870\ud569\uc740 \uc6b0\ub9ac\uac00 \ubbf8\ub9ac \uc54c\uae30 \uc5b4\ub835\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p><strong>SEM Tree<\/strong>\ub294 \uc758\uc0ac\uacb0\uc815\ub098\ubb34(Decision Tree) \uae30\ubc95\uc744 SEM\uc5d0 \uc801\uc6a9\ud55c \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\uc804\uccb4 \ub370\uc774\ud130\ub85c SEM\uc744 \ub3cc\ub9bd\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc5ec\ub7ec \ubc30\uacbd \ubcc0\uc218(\uc131\ubcc4, \uc9c0\uc5ed, \uc18c\ub4dd \ub4f1)\ub97c \uae30\uc900\uc73c\ub85c \ub370\uc774\ud130\ub97c \ucabc\uac1c\ubd05\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc5b4\ub5a4 \ubcc0\uc218\ub85c \ucabc\uac1c\uc57c \ubaa8\ud615\uc758 \ud30c\ub77c\ubbf8\ud130(\ud3c9\uade0, \uacbd\ub85c\uacc4\uc218 \ub4f1) \ucc28\uc774\uac00 \uac00\uc7a5 \ud06c\uac8c \ub098\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uac00\uc7a5 \ucc28\uc774\uac00 \ud070 \ubcc0\uc218\ub85c \ub370\uc774\ud130\ub97c \ub098\ub204\uace0, \uc774 \uacfc\uc815\uc744 \ubc18\ubcf5\ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<p>\uacb0\uad6d, <strong>\ubaa8\ud615\uc758 \ud30c\ub77c\ubbf8\ud130\uac00 \ub3d9\uc9c8\uc801\uc778 \ud558\uc704 \uc9d1\ub2e8<\/strong>\uc744 \ub370\uc774\ud130\uac00 \uc2a4\uc2a4\ub85c \ucc3e\uc544\uc90d\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \ud575\uc2ec \uc54c\uace0\ub9ac\uc998<\/h3>\n\n\n\n<p>\uacfc\uac70\uc5d0\ub294 \ub370\uc774\ud130\ub97c \ucabc\uac24 \ub54c\ub9c8\ub2e4 SEM\uc744 \ub2e4\uc2dc \ub3cc\ub824\uc57c \ud574\uc11c \uc2dc\uac04\uc774 \uc5c4\uccad \uac78\ub838\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ucd5c\uadfc\uc5d0\ub294 <strong>\uc810\uc218 \uae30\ubc18(Score-based)<\/strong> \ud1b5\uacc4\ub7c9\uc744 \uc0ac\uc6a9\ud558\uc5ec, \ubaa8\ud615\uc744 \ub2e4\uc2dc \ub3cc\ub9ac\uc9c0 \uc54a\uace0\ub3c4 &#8220;\uc774 \ubcc0\uc218\ub85c \ub098\ub204\uba74 \ubaa8\ud615\uc774 \ub2ec\ub77c\uc9c8\uae4c?&#8221;\ub97c \ube60\ub974\uac8c \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">4. [\uc2e4\uc2b5] \uac00\uc0c1 \uc2dc\ub098\ub9ac\uc624: &#8220;\ub514\uc9c0\ud138 \ub9ac\ud130\ub7ec\uc2dc \uc131\uc7a5 \uc5f0\uad6c&#8221;<\/h2>\n\n\n\n<p>\uc790, \uc774\uc81c \uc774 \uc774\ub860\uc744 \uc2e4\uc81c \uad50\uc721 \ud604\uc7a5\uc5d0 \uc801\uc6a9\ud574 \ubd05\uc2dc\ub2e4. \uc81c\uac00 \uc5ec\ub7ec\ubd84\uc744 \uc704\ud574 \ubaa8\uc758 \ub370\uc774\ud130\ub97c \uc0dd\uc131\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 \uc5f0\uad6c \uc2dc\ub098\ub9ac\uc624<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc8fc\uc81c:<\/strong> \uc911\ud559\uc0dd\uc758 &#8216;\ub514\uc9c0\ud138 \ub9ac\ud130\ub7ec\uc2dc(Digital Literacy)&#8217;\uac00 3\ub144\uac04 \uc5b4\ub5bb\uac8c \ubcc0\ud558\ub294\uac00?<\/li>\n\n\n\n<li><strong>\ub300\uc0c1:<\/strong> \uc911\ud559\uad50 1\ud559\ub144 500\uba85<\/li>\n\n\n\n<li><strong>\uce21\uc815:<\/strong> \uc9111, \uc9112, \uc9113 \uc2dc\uc810\uc758 \ub514\uc9c0\ud138 \ub9ac\ud130\ub7ec\uc2dc \uc810\uc218 (DL_T1, DL_T2, DL_T3)<\/li>\n\n\n\n<li>\uc608\uce21 \ubcc0\uc218(Covariates): <br>1. Gender (\uc131\ubcc4: 0=\uc5ec, 1=\ub0a8) <br>2. SES (\uc0ac\ud68c\uacbd\uc81c\uc801 \uc9c0\uc704: \uc5f0\uc18d\ud615) <br>3. ScreenTime (\ud558\ub8e8 \uc2a4\ud06c\ub9b0 \ud0c0\uc784) <br>4. CodingExp (\ucf54\ub529 \uacbd\ud5d8 \uc720\ubb34: 0=\ubb34, 1=\uc720) <br>5. Reading (\ub3c5\uc11c \uc2b5\uad00) <br>6. ParentSupport (\ubd80\ubaa8 \uc9c0\uc6d0) <br>7. PeerActivity (\ub610\ub798 \ud65c\ub3d9)<br>8. Sleep (\uc218\uba74 \uc2dc\uac04)<br>9. SchoolType (\ud559\uad50 \uc720\ud615)<br>10. Location (\uac70\uc8fc \uc9c0\uc5ed)<\/li>\n<\/ul>\n\n\n\n<p>\uc6b0\ub9ac\ub294 \uc5ec\uae30\uc11c <strong>\uc7a0\uc7ac\uc131\uc7a5\ubaa8\ud615(LGM)<\/strong>\uc744 \uae30\ubcf8 \ud2c0(Template Model)\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 \ub370\uc774\ud130 \uc0dd\uc131 \ubc0f \ubd84\uc11d (R Code for jamovi Rj Editor)<\/h3>\n\n\n\n<p><em>jamovi\uc5d0\ub294 \uc544\uc9c1 SEM Tree \uae30\ub2a5\uc774 \ub0b4\uc7a5\ub418\uc5b4 \uc788\uc9c0 \uc54a\uc73c\ubbc0\ub85c, jamovi \ub0b4\uc758 &#8216;Rj Editor&#8217; \ubaa8\ub4c8\uc774\ub098 RStudio\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub2e4\uc74c \ucf54\ub4dc\ub97c \uc2e4\ud589\ud55c\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/em><\/p>\n\n\n\n<p>R<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># 1. \ub370\uc774\ud130 \uc0dd\uc131 (\uac00\uc0c1\uc758 \uad50\uc721 \ub370\uc774\ud130)\nset.seed(2026)\nN &lt;- 500\nlibrary(MASS)\n\n# \uacf5\ubcc0\ub7c9 \uc0dd\uc131\nGender &lt;- rbinom(N, 1, 0.5)\nCodingExp &lt;- rbinom(N, 1, 0.3) # 30%\uac00 \ucf54\ub529 \uacbd\ud5d8 \uc788\uc74c\nSES &lt;- rnorm(N, 0, 1)\nReading &lt;- rnorm(N, 0, 1)\nScreenTime &lt;- rnorm(N, 5, 2)\n# \ub098\uba38\uc9c0 \ubcc0\uc218\ub4e4\uc740 \uc7a1\uc74c(Noise) \ubcc0\uc218\ub85c \uc0dd\uc131\nParentSupport &lt;- rnorm(N, 0, 1)\nPeerActivity &lt;- rnorm(N, 0, 1)\nSleep &lt;- rnorm(N, 7, 1)\n\n# \uc7a0\uc7ac\uc131\uc7a5\ubaa8\ud615 \ud30c\ub77c\ubbf8\ud130 \uc124\uc815\n# \ucf54\ub529 \uacbd\ud5d8\uc774 \uc788\uc73c\uba74 \ucd08\uae30\uce58(Intercept)\uac00 \ub192\uace0, SES\uac00 \ub192\uc73c\uba74 \uae30\uc6b8\uae30(Slope)\uac00 \uac00\ud30c\ub974\ub3c4\ub85d \uc124\uc815\nIntercept &lt;- 10 + 2*CodingExp + 0.5*SES + rnorm(N, 0, 2)\nSlope &lt;- 0.5 + 1.5*CodingExp + 0.3*Reading + rnorm(N, 0, 1) # \ucf54\ub529\uacbd\ud5d8\uc774 \uc131\uc7a5\ub960\uc5d0 \ud070 \uc601\ud5a5\n\n# \uad00\uce21 \ubcc0\uc218 \uc0dd\uc131 (Time 1, 2, 3)\nDL_T1 &lt;- Intercept + 0*Slope + rnorm(N, 0, 1)\nDL_T2 &lt;- Intercept + 1*Slope + rnorm(N, 0, 1)\nDL_T3 &lt;- Intercept + 2*Slope + rnorm(N, 0, 1)\n\nData &lt;- data.frame(DL_T1, DL_T2, DL_T3, Gender, SES, CodingExp, Reading, \n                   ScreenTime, ParentSupport, PeerActivity, Sleep)\n\n# 2. \uae30\ubcf8 \uc7a0\uc7ac\uc131\uc7a5\ubaa8\ud615 \uc815\uc758 (lavaan \ubb38\ubc95)\nlibrary(lavaan)\nmodel_growth &lt;- '\n  i =~ 1*DL_T1 + 1*DL_T2 + 1*DL_T3\n  s =~ 0*DL_T1 + 1*DL_T2 + 2*DL_T3\n'\n\n# 3. Regularized SEM (regsem) - \ubcc0\uc218 \uc120\ud0dd\n# \ub204\uac00 Intercept(\ucd08\uae30 \uc218\uc900)\uc640 Slope(\ubcc0\ud654\uc728)\uc744 \uc608\uce21\ud558\ub294\uc9c0 \ubcc0\uc218 8\uac1c\ub97c \ub2e4 \ub123\uace0 \ub3cc\ub824\ubd04\nlibrary(regsem)\n# \uc8fc\uc758: regsem\uc740 \uc2e4\uc81c \uad6c\ub3d9 \uc2dc \uc880 \ub354 \ubcf5\uc7a1\ud55c \uc124\uc815\uc774 \ud544\uc694\ud558\ub098 \uac1c\ub150\uc801\uc73c\ub85c \uc81c\uc2dc\ud568\n# \uc2e4\uc81c\ub85c\ub294 cv_regsem \ub4f1\uc744 \ud1b5\ud574 \ucd5c\uc801\uc758 lambda\ub97c \ucc3e\uc74c\n\n# 4. SEM Tree (semtree) - \uc774\uc9c8\uc801 \uc9d1\ub2e8 \ud0d0\uc0c9\nlibrary(semtree)\n# \ubaa8\ud615 \ube4c\ub4dc\nfit &lt;- growth(model_growth, data=Data)\n# \ud2b8\ub9ac \uc0dd\uc131 (\ubaa8\ub4e0 \uacf5\ubcc0\ub7c9\uc744 \ud6c4\ubcf4\ub85c \ud22c\uc785)\ntree &lt;- semtree(fit, data=Data, predictors=c(\"Gender\", \"SES\", \"CodingExp\", \"Reading\", \n                                             \"ScreenTime\", \"ParentSupport\", \"Sleep\"))\n# \uacb0\uacfc \ud50c\ub86f\nplot(tree)\n<\/code><\/pre>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-65f7dd70-412e-4f5b-9db0-1c015e3bb34d\" href=\"http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/chap39.csv\">chap39<\/a><a href=\"http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/chap39.csv\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-65f7dd70-412e-4f5b-9db0-1c015e3bb34d\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 \ubd84\uc11d \uacb0\uacfc \ud574\uc11d (\uc2dc\ubbac\ub808\uc774\uc158 \uacb0\uacfc)<\/h3>\n\n\n\n<p>\uc5ec\ub7ec\ubd84\uc774 \uc704 \ucf54\ub4dc\ub97c \uc2e4\ud589\ud588\uc744 \ub54c \ub098\uc62c \uacb0\uacfc\ub97c <strong>\ud574\uc11d\ud558\ub294 \ubc29\ubc95<\/strong>\uc744 \uc54c\ub824\ub4dc\ub9ac\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">(1) Regularized SEM \uacb0\uacfc \ud574\uc11d<\/h4>\n\n\n\n<p>Regularized SEM\uc740 10\uac1c\uc758 \uc608\uce21 \ubcc0\uc218 \uc911\uc5d0\uc11c <strong>\ubd88\ud544\uc694\ud55c \ubcc0\uc218\uc758 \uacbd\ub85c\uacc4\uc218\ub97c 0\uc73c\ub85c<\/strong> \ub9cc\ub4e4\uc5b4 \ubc84\ub9bd\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uacb0\uacfc:<\/strong> <code>Sleep<\/code>, <code>ParentSupport<\/code>, <code>Location<\/code> \ub4f1\uc758 \ubcc0\uc218\ub294 \ucd08\uae30\uce58(i)\uc640 \uae30\uc6b8\uae30(s)\ub85c \uac00\ub294 \uacbd\ub85c\uacc4\uc218\uac00 0\uc774 \ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc0dd\uc874\ud55c \ubcc0\uc218:<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>CodingExp<\/code> <math data-latex=\"\\rightarrow\"><semantics><mo stretchy=\"false\" lspace=\"0em\" rspace=\"0em\">\u2192<\/mo><annotation encoding=\"application\/x-tex\">\\rightarrow<\/annotation><\/semantics><\/math> <strong>Slope<\/strong> (\uac15\ud55c \uc591\uc758 \ud6a8\uacfc): \ucf54\ub529 \uacbd\ud5d8\uc774 \uc788\ub294 \ud559\uc0dd\uc740 \uc5c6\ub294 \ud559\uc0dd\ubcf4\ub2e4 \ub514\uc9c0\ud138 \ub9ac\ud130\ub7ec\uc2dc\uac00 \ud6e8\uc52c \ube60\ub974\uac8c \uc131\uc7a5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><code>SES<\/code> <math data-latex=\"\\rightarrow\"><semantics><mo stretchy=\"false\" lspace=\"0em\" rspace=\"0em\">\u2192<\/mo><annotation encoding=\"application\/x-tex\">\\rightarrow<\/annotation><\/semantics><\/math> <strong>Intercept<\/strong>: \uac00\uc815 \ud615\ud3b8\uc774 \uc88b\uc744\uc218\ub85d \ucd08\uae30 \uc810\uc218\uac00 \ub192\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\uc758\uc758:<\/strong> \ubcf5\uc7a1\ud55c \ubcc0\uc218\ub4e4 \uc911\uc5d0\uc11c \uc9c4\uc9dc \ubc94\uc778(\uc601\ud5a5 \uc694\uc778)\uc744 \ucc3e\uc544\ub0c8\uc2b5\ub2c8\ub2e4! \uc5f0\uad6c\uc790\ub294 \uc774\ub97c \ubc14\ud0d5\uc73c\ub85c &#8220;\ucf54\ub529 \uad50\uc721\uc774 \ub514\uc9c0\ud138 \ub9ac\ud130\ub7ec\uc2dc \uc131\uc7a5 \uc18d\ub3c4\uc758 \ud575\uc2ec&#8221;\uc774\ub77c\ub294 \uc774\ub860\uc744 \uc815\uad50\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">(2) SEM Tree \uacb0\uacfc \ud574\uc11d<\/h4>\n\n\n\n<p>SEM Tree\ub294 \ub370\uc774\ud130\ub97c \ub098\ubb34 \uac00\uc9c0\uce58\uae30\ud558\ub4ef \ub098\ub204\uc5b4 \uc90d\ub2c8\ub2e4. \uacb0\uacfc \uadf8\ub9bc\uc774 \ub2e4\uc74c\uacfc \uac19\uc774 \ub098\uc654\ub2e4\uace0 \uc0c1\uc0c1\ud574 \ubd05\uc2dc\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"784\" src=\"http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2-1024x784.png\" alt=\"\" class=\"wp-image-694\" srcset=\"http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2-1024x784.png 1024w, http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2-300x230.png 300w, http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2-768x588.png 768w, http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2-624x478.png 624w, http:\/\/waurimal.kr\/wp-content\/uploads\/2026\/01\/fig39-2.png 1501w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uccab \ubc88\uc9f8 \ubd84\uae30 (Root Split):<\/strong> \uac00\uc7a5 \uba3c\uc800 <strong><code>CodingExp<\/code><\/strong>(\ucf54\ub529 \uacbd\ud5d8) \uc720\ubb34\ub85c \uac08\ub77c\uc9d1\ub2c8\ub2e4. \uc774\ub294 \ucf54\ub529 \uacbd\ud5d8\uc774 \uc804\uccb4 \ubaa8\ud615(\uc131\uc7a5 \uace1\uc120)\uc744 \uac00\uc7a5 \ud06c\uac8c \ub2e4\ub974\uac8c \ub9cc\ub4e0\ub2e4\ub294 \ub73b\uc785\ub2c8\ub2e4.\n<ul class=\"wp-block-list\">\n<li><strong>Node 2 (\ucf54\ub529 \ubb34):<\/strong> \ud3c9\uade0 \uc131\uc7a5\ub960(Slope Mean) = 0.5<\/li>\n\n\n\n<li><strong>Node 3 (\ucf54\ub529 \uc720):<\/strong> \ud3c9\uade0 \uc131\uc7a5\ub960(Slope Mean) = 2.0 (\ud6e8\uc52c \uac00\ud30c\ub974\uac8c \uc131\uc7a5!)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\ub450 \ubc88\uc9f8 \ubd84\uae30 (Child Split):<\/strong> \ucf54\ub529 \uacbd\ud5d8\uc774 <strong>\uc5c6\ub294<\/strong> \uc9d1\ub2e8(Node 2) \ub0b4\uc5d0\uc11c, \ub2e4\uc2dc <strong><code>Reading<\/code><\/strong>(\ub3c5\uc11c \uc2b5\uad00)\uc73c\ub85c \uac08\ub77c\uc9d1\ub2c8\ub2e4.\n<ul class=\"wp-block-list\">\n<li>\ucf54\ub529\uc740 \uc548 \ud588\uc9c0\ub9cc \ub3c5\uc11c\ub97c \ub9ce\uc774 \ud55c \ud559\uc0dd\ub4e4\uc740 \uadf8\ub798\ub3c4 \uc131\uc7a5\uc774 \uc5b4\ub290 \uc815\ub3c4 \uc77c\uc5b4\ub0a9\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\ud574\uc11d:<\/strong> \uc774 \uacb0\uacfc\ub294 \ub2e8\uc21c\ud788 \uc120\ud615\uc801\uc778 \uad00\uacc4\ubfd0\ub9cc \uc544\ub2c8\ub77c, <strong>\uc0c1\ud638\uc791\uc6a9(Interaction)<\/strong>\uc744 \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. &#8220;\ucf54\ub529 \uacbd\ud5d8\uc774 \uc5c6\ub354\ub77c\ub3c4 \ub3c5\uc11c\ub97c \ub9ce\uc774 \ud558\uba74 \ubcf4\uc644\uc774 \ub41c\ub2e4&#8221;\ub294 \uc2dd\uc758 \uad50\uc721\uc801 \ucc98\ubc29\uc744 \ub0b4\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. \ub17c\uc758: \uae30\uacc4\ud559\uc2b5\uc744 SEM\uc5d0 \uc4f8 \ub54c \uc8fc\uc758\ud560 \uc810<\/h2>\n\n\n\n<p>\uc774 \uba4b\uc9c4 \ub3c4\uad6c\ub4e4\uc744 \uc0ac\uc6a9\ud560 \ub54c\ub3c4 \uc8fc\uc758\uc0ac\ud56d\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\uacfc\uc801\ud569(Overfitting)\uc758 \uc704\ud5d8:<\/strong> \uae30\uacc4\ud559\uc2b5\uc740 \ub370\uc774\ud130\uc5d0 \ub108\ubb34 \uacfc\ud558\uac8c \ub9de\ucdb0\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub798\uc11c \uad50\ucc28 \ud0c0\ub2f9\ud654(Cross-validation) \uac19\uc740 \uae30\ubc95\uc744 \uaf2d \uc368\uc57c \ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub370\uc774\ud130 \uc218:<\/strong> SEM Tree\ub294 \ub370\uc774\ud130\ub97c \ucabc\uac1c\uae30 \ub54c\ubb38\uc5d0 \uc0d8\ud50c \uc218\uac00 \uaf64 \ub9ce\uc544\uc57c \ud569\ub2c8\ub2e4. \uc218\ubc31 \uba85\uc5d0\uc11c \uc218\ucc9c \uba85\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uc7ac\ud604\uc131(Reproducibility):<\/strong> \ubd84\uc11d \uacfc\uc815\uc774 \ubcf5\uc7a1\ud558\ubbc0\ub85c, \uc5b4\ub5a4 \ud30c\ub77c\ubbf8\ud130(\uc124\uc815\uac12)\ub97c \uc37c\ub294\uc9c0 \ucf54\ub4dc\uc640 \ud568\uaed8 \ud22c\uba85\ud558\uac8c \uacf5\uac1c\ud574\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">6. \uacb0\ub860: \uc5f0\uad6c\uc790\uc758 \uc9c1\uad00\uacfc AI\uc758 \ub9cc\ub0a8<\/h2>\n\n\n\n<p>Regularized SEM\uacfc SEM Tree\ub294 \uc6b0\ub9ac\uc758 \uc774\ub860\uc801 \uc9c1\uad00\uc744 \ub300\uccb4\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c, <strong>\ubcf4\uc644<\/strong>\ud574 \uc90d\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Regularized SEM<\/strong>\uc740 \uc218\ub9ce\uc740 \ubcc0\uc218 \uc18d\uc5d0\uc11c <strong>&#8216;\uc2e0\ud638&#8217;<\/strong>\ub97c \ucc3e\uc544\uc90d\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>SEM Tree<\/strong>\ub294 \uc804\uccb4 \ud3c9\uade0\uc5d0 \uac00\ub824\uc838 \uc788\ub358 <strong>&#8216;\uc18c\uc678\ub41c \uc9d1\ub2e8&#8217;<\/strong>\uc774\ub098 <strong>&#8216;\ud2b9\uc774 \uc9d1\ub2e8&#8217;<\/strong>\uc744 \ucc3e\uc544\uc90d\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p>\uc774 \ubc29\ubc95\ub4e4\uc744 \ud1b5\ud574 \uc5ec\ub7ec\ubd84\uc758 \uad50\uc721\ud559 \uc774\ub860\uc774 \ub2e8\uc21c\ud788 &#8220;\uad00\uacc4\uac00 \uc788\ub2e4&#8221;\ub97c \ub118\uc5b4, &#8220;\ub204\uad6c\uc5d0\uac8c, \uc5b4\ub5a4 \uc870\uac74\uc5d0\uc11c, \uc65c \uadf8\ub7f0 \uad00\uacc4\uac00 \ub098\ud0c0\ub098\ub294\uc9c0&#8221;\ub97c \ubc1d\ud788\ub294 \uc815\uad50\ud55c \uc774\ub860\uc73c\ub85c \ubc1c\uc804\ud558\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ucc38\uace0\ubb38\ud5cc<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Arnold, M., Voelkle, M. C., &amp; Brandmaier, A. M. (2021). Score-guided structural equation model trees. <em>Frontiers in Psychology, 11<\/em>, Article 3913.<\/li>\n\n\n\n<li>Brandmaier, A. M., von Oertzen, T., McArdle, J. J., &amp; Lindenberger, U. (2013). Structural equation model trees. <em>Psychological Methods, 18<\/em>(1), 71-86.<\/li>\n\n\n\n<li>Breiman, L. (2001). Random forests. <em>Machine Learning, 45<\/em>(1), 5-32.<\/li>\n\n\n\n<li>Haig, B. D. (2014). <em>Investigating the psychological world: Scientific method in the behavioral sciences<\/em>. Cambridge, MA: MIT Press.<\/li>\n\n\n\n<li>Jacobucci, R., Grimm, K. J., &amp; McArdle, J. J. (2016). Regularized structural equation modeling. <em>Structural Equation Modeling, 23<\/em>(4), 555-566.<\/li>\n\n\n\n<li>Nelson, N. A., Jacobucci, R., Grimm, K. J., &amp; Zelinski, E. M. (2020). The bidirectional relationship between physical health and memory. <em>Psychology and Aging, 35<\/em>(8), 1140-1153.<\/li>\n\n\n\n<li>Zeileis, A., Hothorn, T., &amp; Hornik, K. (2008). Model-based recursive partitioning. <em>Journal of Computational and Graphical Statistics, 17<\/em>(2), 492-514.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc548\ub155\ud558\uc138\uc694, \uc774\ubc88\uc5d0\ub294 \uc6b0\ub9ac\uac00 \uadf8\ub3d9\uc548 \ubc30\uc6e0\ub358 \uad6c\uc870\ubc29\uc815\uc2dd \ubaa8\ud615(SEM)\uc774\ub77c\ub294 \ud0c4\ud0c4\ud55c \uc774\ub860\uc801 \ud2c0\uc5d0, \ucd5c\uadfc \ub370\uc774\ud130 \uacfc\ud559\uc758 \ud575\uc2ec\uc778 \uae30\uacc4\ud559\uc2b5(Machine Learning)\uc744 \uc5b4\ub5bb\uac8c \uacb0\ud569\ud560 \uc218 \uc788\ub294\uc9c0 \ub2e4\ub8e8\uc5b4 \ubcf4\ub824\uace0 \ud569\ub2c8\ub2e4. &#8220;\uc774\ub860 \uac80\uc99d\ud558\ub824\uba74 SEM\uc744 \uc4f0\uace0, \uc608\uce21\ud558\ub824\uba74 \uba38\uc2e0\ub7ec\ub2dd\uc744 \uc4f0\ub294 \uac70 \uc544\ub2cc\uac00\uc694?&#8221;\ub77c\uace0 \uc0dd\uac01\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub9de\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc5f0\uad6c\ub97c \ud558\ub2e4 \ubcf4\uba74 &#8220;\uc774\ub860\uc740 \uc788\ub294\ub370 \ubb54\uac00 \ub370\uc774\ud130\uc5d0 \uc228\uaca8\uc9c4 \ud328\ud134\uc774 \ub354 \uc788\uc744 \uac83 \uac19\ub2e4&#8221;\ub294 \uc0dd\uac01\uc774 \ub4e4 \ub54c\uac00 \uc788\uc8e0? \ubc14\ub85c <a class=\"read-more\" href=\"http:\/\/waurimal.kr\/?p=691\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[300],"tags":[199,166,394,301,395],"class_list":["post-691","post","type-post","status-publish","format-standard","hentry","category-sem","tag-r","tag-sem","tag-semtree","tag-301","tag-395"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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