{"id":1224,"date":"2023-07-27T05:41:59","date_gmt":"2023-07-27T05:41:59","guid":{"rendered":"https:\/\/statorials.org\/my\/%e1%80%80%e1%80%bb%e1%80%95%e1%80%94%e1%80%ba%e1%80%b8-drill-%e1%80%90%e1%80%bd%e1%80%84%e1%80%ba-r\/"},"modified":"2023-07-27T05:41:59","modified_gmt":"2023-07-27T05:41:59","slug":"%e1%80%80%e1%80%bb%e1%80%95%e1%80%94%e1%80%ba%e1%80%b8-drill-%e1%80%90%e1%80%bd%e1%80%84%e1%80%ba-r","status":"publish","type":"post","link":"https:\/\/statorials.org\/my\/%e1%80%80%e1%80%bb%e1%80%95%e1%80%94%e1%80%ba%e1%80%b8-drill-%e1%80%90%e1%80%bd%e1%80%84%e1%80%ba-r\/","title":{"rendered":"R \u1010\u103d\u1004\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1019\u103b\u102c\u1038 \u1016\u1014\u103a\u1010\u102e\u1038\u1014\u100a\u103a\u1038 (\u1010\u1005\u103a\u1006\u1004\u1037\u103a\u1015\u103c\u102e\u1038\u1010\u1005\u103a\u1006\u1004\u1037\u103a)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1021\u1005\u102f\u1010\u1005\u103a\u1001\u102f\u1014\u103e\u1004\u1037\u103a <a href=\"https:\/\/statorials.org\/my\/\u1015\u103c\u1031\u102c\u1004\u103a\u1038\u101c\u1032\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c-\u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1001\u103b\u1000\u103a-\u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1019\u103b\u102c\u1038\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a<\/a> \u1000\u103c\u102c\u1038\u1000 \u1006\u1000\u103a\u1006\u1036\u101b\u1031\u1038\u101e\u100a\u103a \u1021\u101c\u103d\u1014\u103a\u101b\u103e\u102f\u1015\u103a\u1011\u103d\u1031\u1038\u101e\u1031\u102c\u1021\u1001\u102b\u104a \u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u1000\u103c\u102c\u1038\u101b\u103e\u102d \u1006\u1000\u103a\u1006\u1036\u101b\u1031\u1038\u1000\u102d\u102f \u1014\u1019\u1030\u1014\u102c\u101a\u1030\u101b\u1014\u103a \u101c\u102d\u102f\u1004\u103a\u1038\u1019\u101f\u102f\u1010\u103a\u101e\u1031\u102c\u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101c\u1031\u1037\u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1011\u102d\u102f\u1000\u1032\u1037\u101e\u102d\u102f\u1037\u101e\u1031\u102c \u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f\u1019\u103e\u102c <a href=\"https:\/\/statorials.org\/my\/\u1021\u1019\u103b\u102d\u102f\u1038\u1021\u1005\u102c\u1038\u1001\u103d\u1032\u1001\u103c\u1004\u103a\u1038\u1014\u103e\u1004\u1037\u103a-\u1006\u102f\u1010\u103a\u101a\u102f\u1010\u103a\u1001\u103c\u1004\u103a\u1038-\u101e\u1005\u103a\u1015\u1004\u103a\u1019\u103b\u102c\u1038\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a<\/a> \u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u1014\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b \u101e\u102d\u102f\u1037\u101e\u1031\u102c\u103a\u104a \u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u101e\u1031\u102c\u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a\u1015\u1004\u103a\u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1001\u103c\u1004\u103a\u1038\u104f\u1021\u102c\u1038\u1014\u100a\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103e\u102c\u104e\u1004\u103a\u1038\u101e\u100a\u103a <a href=\"https:\/\/statorials.org\/my\/\u1018\u1000\u103a\u101c\u102d\u102f\u1000\u103a\u1019\u103e\u102f\u1000\u103d\u1032\u101c\u103d\u1032\u1019\u103e\u102f-\u1021\u1015\u1031\u1038\u1021\u101a\u1030\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1019\u103c\u1004\u1037\u103a\u1019\u102c\u1038\u101e\u1031\u102c\u1000\u103d\u1032\u101c\u103d\u1032\u1019\u103e\u102f\u1000\u102d\u102f<\/a> \u1001\u1036\u1005\u102c\u1038\u101b\u1010\u1010\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1006\u102d\u102f\u101c\u102d\u102f\u101e\u100a\u103a\u1019\u103e\u102c\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1012\u1031\u1010\u102c\u1021\u1010\u103d\u1032\u1000\u102d\u102f \u1014\u103e\u1005\u103a\u1015\u102d\u102f\u1004\u103a\u1038\u1001\u103d\u1032\u1015\u103c\u102e\u1038 \u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a\u1000\u102d\u102f \u1014\u103e\u1005\u103a\u1001\u103c\u1019\u103a\u1038\u1005\u101c\u102f\u1036\u1038\u1010\u103d\u1004\u103a \u1021\u101e\u102f\u1036\u1038\u1001\u103b\u1015\u102b\u1000\u104a \u101b\u101c\u1012\u103a\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1021\u101c\u103d\u1014\u103a\u1000\u103d\u1032\u1015\u103c\u102c\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u101e\u1031\u102c \u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a\u1015\u1004\u103a\u104f \u1000\u103d\u1032\u101c\u103d\u1032\u1019\u103e\u102f\u1000\u102d\u102f \u101c\u103b\u103e\u1031\u102c\u1037\u1001\u103b\u101b\u1014\u103a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037 \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a \u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f\u1019\u103e\u102c \u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1021\u1010\u102d\u102f\u1004\u103a\u1038 \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101e\u100a\u1037\u103a <a href=\"https:\/\/statorials.org\/my\/\u1000\u103b\u1015\u1014\u103a\u1038\u101c\u1031\u1037\u1000\u103b\u1004\u1037\u103a\u1019\u103e\u102f\u1019\u103b\u102c\u1038\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f<\/a> \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u1001\u103c\u1004\u103a\u1038\u1016\u103c\u1005\u103a\u101e\u100a\u103a-<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>1.<\/strong> \u1019\u1030\u101b\u1004\u103a\u1038\u1012\u1031\u1010\u102c\u1021\u1010\u103d\u1032\u1019\u103e <em>b<\/em> bootstrapped \u1014\u1019\u1030\u1014\u102c\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u101a\u1030\u1015\u102b\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>2.<\/strong> bootstrap \u1014\u1019\u1030\u1014\u102c\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1021\u1010\u103d\u1000\u103a \u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a\u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1016\u1014\u103a\u1010\u102e\u1038\u1015\u102b\u104b<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u101e\u1005\u103a\u1015\u1004\u103a\u1000\u102d\u102f\u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101e\u1031\u102c\u1021\u1001\u102b\u104a \u1001\u103d\u1032\u1001\u103c\u1019\u103a\u1038\u1001\u103c\u1004\u103a\u1038\u1000\u102d\u102f\u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1005\u1009\u103a\u1038\u1005\u102c\u1038\u101e\u100a\u1037\u103a\u1021\u1001\u102b\u1010\u102d\u102f\u1004\u103a\u1038\u104a <em>p<\/em> \u101f\u1031\u102c\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u104f \u1000\u103b\u1015\u1014\u103a\u1038\u1014\u1019\u1030\u1014\u102c\u1019\u103b\u102c\u1038\u1000\u102d\u102f\u101e\u102c <em>p<\/em> \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\u1021\u1005\u102f\u1021\u101d\u1031\u1038\u1019\u103e\u1001\u103d\u1032\u1011\u102f\u1010\u103a\u101b\u1014\u103a\u1021\u1010\u103d\u1000\u103a \u1000\u102d\u102f\u101a\u103a\u1005\u102c\u1038\u101c\u103e\u101a\u103a\u101c\u1031\u102c\u1004\u103a\u1038\u1019\u103b\u102c\u1038\u1021\u1016\u103c\u1005\u103a \u101e\u1010\u103a\u1019\u103e\u1010\u103a\u1001\u1036\u101b\u1015\u102b\u101e\u100a\u103a\u104b \u101a\u1031\u1018\u1030\u101a\u103b\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a <em>m<\/em> \u1014\u103e\u1004\u1037\u103a \u100a\u102e\u1019\u103b\u103e\u101e\u1031\u102c <span style=\"text-decoration: overline;\"><em>\u221ap<\/em><\/span> \u1000\u102d\u102f \u101b\u103d\u1031\u1038\u101e\u100a\u103a\u104b<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\"><strong>3.<\/strong> \u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u1010\u1005\u103a\u1001\u102f\u101b\u101b\u103e\u102d\u101b\u1014\u103a \u101e\u1005\u103a\u1015\u1004\u103a\u1010\u1005\u103a\u1015\u1004\u103a\u1005\u102e\u1019\u103e \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1015\u103b\u1019\u103a\u1038\u1019\u103b\u103e\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u101e\u1031\u102c\u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a\u1015\u1004\u103a\u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a <a href=\"https:\/\/statorials.org\/my\/r-\u1010\u103d\u1004\u103a\u1021\u102d\u1010\u103a\u1011\u100a\u1037\u103a\u1001\u103c\u1004\u103a\u1038\u104b\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u1021\u102d\u1010\u103a\u1005\u103d\u1015\u103a\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1019\u103b\u102c\u1038<\/a> \u1011\u1000\u103a \u1019\u103b\u102c\u1038\u1005\u103d\u102c\u1015\u102d\u102f\u1019\u102d\u102f\u1010\u102d\u1000\u103b\u101e\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101c\u1031\u1037\u101b\u103e\u102d\u1000\u103c\u1031\u102c\u1004\u103a\u1038 \u1010\u103d\u1031\u1037\u101b\u103e\u102d\u101b\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1024\u101e\u1004\u103a\u1001\u1014\u103a\u1038\u1005\u102c\u101e\u100a\u103a R \u1010\u103d\u1004\u103a\u1012\u1031\u1010\u102c\u1021\u1005\u102f\u1036\u1021\u1010\u103d\u1000\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1010\u1005\u103a\u1001\u102f\u1016\u1014\u103a\u1010\u102e\u1038\u1015\u102f\u1036\u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u1000\u102d\u102f \u1025\u1015\u1019\u102c\u1015\u1031\u1038\u1011\u102c\u1038\u101e\u100a\u103a\u104b<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1021\u1006\u1004\u1037\u103a 1- \u101c\u102d\u102f\u1021\u1015\u103a\u101e\u1031\u102c \u1015\u1000\u103a\u1000\u1031\u1037\u1001\u103a\u103b\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1010\u1004\u103a\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1015\u1011\u1019\u1026\u1038\u1005\u103d\u102c\u104a \u1024\u1025\u1015\u1019\u102c\u1021\u1010\u103d\u1000\u103a \u101c\u102d\u102f\u1021\u1015\u103a\u101e\u1031\u102c \u1015\u1000\u103a\u1000\u1031\u1037\u1002\u103b\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1010\u1004\u103a\u1015\u102b\u1019\u100a\u103a\u104b \u1024\u101b\u102d\u102f\u1038\u101b\u103e\u1004\u103a\u1038\u101e\u1031\u102c\u1025\u1015\u1019\u102c\u1021\u1010\u103d\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1021\u1011\u102f\u1015\u103a\u1010\u1005\u103a\u1001\u102f\u101e\u102c \u101c\u102d\u102f\u1021\u1015\u103a\u101e\u100a\u103a-<\/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>\u1021\u1006\u1004\u1037\u103a 2- \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1001\u103b\u102d\u1014\u103a\u100a\u103e\u102d\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1024\u1025\u1015\u1019\u102c\u1021\u1010\u103d\u1000\u103a\u104a \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u101c\u1030\u1010\u1005\u103a\u1026\u1038\u1001\u103b\u1004\u103a\u1038\u101b\u1000\u103a\u1015\u1031\u102b\u1004\u103a\u1038 153 \u101b\u1000\u103a\u1021\u1010\u103d\u1004\u103a\u1038 \u1014\u101a\u1030\u1038\u101a\u1031\u102c\u1000\u103a\u1005\u102e\u1038\u1010\u102e\u1038\u1010\u103d\u1004\u103a \u101c\u1031\u1011\u102f\u1021\u101b\u100a\u103a\u1021\u101e\u103d\u1031\u1038\u1000\u102d\u102f \u1010\u102d\u102f\u1004\u103a\u1038\u1010\u102c\u1019\u103e\u102f\u1019\u103b\u102c\u1038\u1015\u102b\u101b\u103e\u102d\u101e\u1031\u102c <strong>Air Quality<\/strong> \u101f\u102f\u1001\u1031\u102b\u103a\u101e\u1031\u102c Built-in R \u1012\u1031\u1010\u102c\u1021\u1005\u102f\u1036\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102b\u1019\u100a\u103a\u104b<\/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;\">\u1024\u1012\u1031\u1010\u102c\u1021\u1010\u103d\u1032\u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038 42 \u1010\u1014\u103a\u1038\u101b\u103e\u102d\u101e\u100a\u103a\u104b \u1011\u102d\u102f\u1037\u1000\u103c\u1031\u102c\u1004\u1037\u103a\u104a \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1019\u1010\u1015\u103a\u1006\u1004\u103a\u1019\u102e\u104a \u1000\u1031\u102c\u103a\u101c\u1036\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1010\u103d\u1004\u103a \u1000\u1031\u102c\u103a\u101c\u1036 medians \u1016\u103c\u1004\u1037\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1016\u103c\u100a\u1037\u103a\u1015\u102b\u101c\u102d\u1019\u1037\u103a\u1019\u100a\u103a-<\/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>\u1006\u1000\u103a\u1005\u1015\u103a-<\/strong><\/span> <a href=\"https:\/\/statorials.org\/my\/r-\u1010\u103d\u1004\u103a-\u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f-\u1006\u1014\u1037\u103a\u1000\u103b\u1004\u103a\u101e\u100a\u103a\u104b\/\" target=\"_blank\" rel=\"noopener noreferrer\">R \u1010\u103d\u1004\u103a \u1015\u103b\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1014\u1031\u101e\u1031\u102c\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1005\u103d\u1015\u103a\u1005\u103d\u1032\u1019\u100a\u103a\u1014\u100a\u103a\u1038\u104b<\/a><\/p>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1000\u102f\u1012\u103a\u101e\u100a\u103a <a href=\"https:\/\/cran.r-project.org\/web\/packages\/randomForest\/randomForest.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">randomForest<\/a> \u1015\u1000\u103a\u1000\u1031\u1037\u1001\u103a\u103b\u1019\u103e <strong>randomForest()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d R \u1010\u103d\u1004\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1036\u101d\u1004\u103a\u1001\u103d\u1004\u103a\u1000\u103b\u1016\u103c\u1005\u103a\u1005\u1031\u101b\u1014\u103a \u1016\u1031\u102c\u103a\u1015\u103c\u101e\u100a\u103a\u104b<\/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;\">\u101b\u101c\u1012\u103a\u1019\u103e\u104a \u1021\u1014\u102d\u1019\u1037\u103a\u1006\u102f\u1036\u1038\u1005\u1019\u103a\u1038\u101e\u1015\u103a\u1019\u103e\u102f mean square error (MSE) \u1000\u102d\u102f\u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101e\u100a\u1037\u103a\u1015\u102f\u1036\u1005\u1036\u101e\u100a\u103a \u101e\u1005\u103a\u1015\u1004\u103a <strong>82<\/strong> \u1015\u1004\u103a\u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1011\u102c\u1038\u101e\u100a\u103a\u1000\u102d\u102f\u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u1010\u103d\u1031\u1037\u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1024\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u104f root mean square error \u101e\u100a\u103a <strong>17.64392<\/strong> \u1016\u103c\u1005\u103a\u101e\u100a\u103a\u1000\u102d\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u1010\u103d\u1031\u1037\u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span> <span style=\"color: #000000;\">\u104e\u1004\u103a\u1038\u1000\u102d\u102f \u1021\u102d\u102f\u1007\u102f\u1014\u103a\u1038\u104f \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1014\u103e\u1004\u1037\u103a \u1021\u1019\u103e\u1014\u103a\u1010\u1000\u101a\u103a \u101c\u1031\u1037\u101c\u102c\u1010\u103d\u1031\u1037\u101b\u103e\u102d\u1011\u102c\u1038\u101e\u100a\u1037\u103a \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1000\u103c\u102c\u1038 \u1015\u103b\u1019\u103a\u1038\u1019\u103b\u103e \u1000\u103d\u102c\u1001\u103c\u102c\u1038\u1001\u103b\u1000\u103a\u101f\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037 \u101a\u1030\u1006\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\">\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u1031\u102c\u101e\u1005\u103a\u1015\u1004\u103a\u1021\u101b\u1031\u1021\u1010\u103d\u1000\u103a\u1021\u1015\u1031\u102b\u103a\u1021\u1001\u103c\u1031\u1001\u1036\u104d MSE \u1005\u1019\u103a\u1038\u101e\u1015\u103a\u1019\u103e\u102f\u1021\u1015\u102d\u102f\u1004\u103a\u1038\u1000\u102d\u102f\u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u101b\u1014\u103a \u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u102f\u1012\u103a\u1000\u102d\u102f\u101c\u100a\u103a\u1038 \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/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=\"R \u101b\u103e\u102d \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u101b\u103e\u102d \u101e\u1005\u103a\u1015\u1004\u103a\u1021\u101b\u1031\u1021\u1010\u103d\u1000\u103a\u1016\u103c\u1004\u1037\u103a MSE \u1000\u102d\u102f \u1005\u1019\u103a\u1038\u101e\u1015\u103a\u1015\u102b\u104b\" width=\"449\" height=\"439\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u101b\u103e\u102d \u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u104f \u1021\u101b\u1031\u1038\u1015\u102b\u1019\u103e\u102f\u1000\u102d\u102f\u1015\u103c\u101e\u101e\u100a\u1037\u103a \u1000\u103d\u1000\u103a\u1000\u103d\u1000\u103a\u1010\u1005\u103a\u1001\u102f\u1016\u1014\u103a\u1010\u102e\u1038\u101b\u1014\u103a <strong>varImpPlot()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/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 \u1010\u103d\u1004\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u1010\u1031\u102c\" width=\"424\" height=\"442\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">x-axis \u101e\u100a\u103a y-\u101d\u1004\u103a\u101b\u102d\u102f\u1038\u1015\u1031\u102b\u103a\u1010\u103d\u1004\u103a\u1015\u103c\u101e\u1011\u102c\u1038\u101e\u1031\u102c \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c\u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f\u1016\u103c\u1010\u103a\u104d \u1015\u102d\u102f\u1004\u103a\u1038\u1001\u103c\u102c\u1038\u1001\u103c\u1004\u103a\u1038\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1021\u1016\u103c\u1005\u103a regression \u101e\u1005\u103a\u1015\u1004\u103a\u1019\u103b\u102c\u1038\u104f \u1015\u103b\u1019\u103a\u1038\u1019\u103b\u103e node \u101e\u1014\u1037\u103a\u1005\u1004\u103a\u1019\u103e\u102f\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1002\u101b\u1015\u103a\u1019\u103e\u104a <em>Wind<\/em> \u101e\u100a\u103a <em>Temp<\/em> \u104f\u1014\u1031\u102c\u1000\u103a\u1010\u103d\u1004\u103a \u1021\u101b\u1031\u1038\u1000\u103c\u102e\u1038\u1006\u102f\u1036\u1038 \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u1000\u102d\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1021\u1006\u1004\u1037\u103a 3: \u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1000\u102d\u102f \u1001\u103b\u102d\u1014\u103a\u100a\u103e\u102d\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1015\u102f\u1036\u1019\u103e\u1014\u103a\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a\u104a <strong>randomForest()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u101e\u100a\u103a \u101e\u1005\u103a\u1015\u1004\u103a 500 \u1000\u102d\u102f\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u103c\u102e\u1038 (\u1005\u102f\u1005\u102f\u1015\u1031\u102b\u1004\u103a\u1038 \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\/ 3) \u1001\u103d\u1032\u1001\u103d\u1032\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1021\u1010\u103d\u1000\u103a \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u1001\u103b\u1031\u101b\u103e\u102d\u101e\u1031\u102c \u1000\u102d\u102f\u101a\u103a\u1005\u102c\u1038\u101c\u103e\u101a\u103a\u101c\u1031\u102c\u1004\u103a\u1038\u1019\u103b\u102c\u1038\u1021\u1016\u103c\u1005\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1000\u103b\u1015\u1014\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u101e\u100a\u103a\u104b <strong>tuneRF()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d \u1024\u1018\u1031\u102c\u1004\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1001\u103b\u102d\u1014\u103a\u100a\u103e\u102d\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1021\u1031\u102c\u1000\u103a\u1016\u1031\u102c\u103a\u1015\u103c\u1015\u102b \u1000\u102f\u1012\u103a\u101e\u100a\u103a \u1021\u1031\u102c\u1000\u103a\u1015\u102b\u101e\u1010\u103a\u1019\u103e\u1010\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d \u1021\u1000\u1031\u102c\u1004\u103a\u1038\u1006\u102f\u1036\u1038\u1019\u1031\u102c\u103a\u1012\u101a\u103a\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u101b\u103e\u102c\u1016\u103d\u1031\u101b\u1019\u100a\u103a\u1000\u102d\u102f \u1015\u103c\u101e\u101e\u100a\u103a-<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\"><strong>ntreeTry:<\/strong> \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u1014\u103a \u101e\u1005\u103a\u1015\u1004\u103a\u1021\u101b\u1031\u1021\u1010\u103d\u1000\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>mtryStart-<\/strong> \u100c\u102c\u1014\u1001\u103d\u1032\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1010\u103d\u1004\u103a \u1011\u100a\u1037\u103a\u101e\u103d\u1004\u103a\u1038\u1005\u1009\u103a\u1038\u1005\u102c\u1038\u101b\u1014\u103a \u1000\u1014\u1026\u1038\u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\u1021\u1006\u1004\u1037\u103a\u101e\u1010\u103a\u1019\u103e\u1010\u103a\u1001\u103b\u1000\u103a-<\/strong> \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103c\u1031\u1021\u102d\u1010\u103a\u1015\u103c\u1004\u103a\u1015 \u1021\u1019\u103e\u102c\u1038\u1021\u101a\u103d\u1004\u103a\u1038\u101e\u100a\u103a \u1021\u1001\u103b\u102d\u102f\u1037\u101e\u1031\u102c\u1015\u1019\u102c\u100f\u1016\u103c\u1004\u1037\u103a \u1010\u102d\u102f\u1038\u1010\u1000\u103a\u1019\u101c\u102c\u1019\u1001\u103b\u1004\u103a\u1038 \u1010\u102d\u102f\u1038\u101b\u1014\u103a\u1021\u1001\u103b\u1000\u103a\u104b<\/span><\/li>\n<li> <span style=\"color: #000000;\"><strong>\u1019\u103c\u103e\u1004\u1037\u103a\u1010\u1004\u103a\u101b\u1014\u103a-<\/strong> \u1021\u1006\u1004\u1037\u103a\u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1000\u102d\u102f \u1006\u1000\u103a\u101c\u1000\u103a\u1010\u102d\u102f\u1038\u1019\u103c\u103e\u1004\u1037\u103a\u101b\u1014\u103a\u1021\u1010\u103d\u1000\u103a \u1021\u102d\u1010\u103a\u1011\u103d\u1000\u103a\u1015\u1031\u102b\u1000\u103a\u1019\u103e\u102c\u1038\u101a\u103d\u1004\u103a\u1038\u101e\u100a\u1037\u103a\u1015\u1019\u102c\u100f\u1000\u102d\u102f \u1019\u103c\u103e\u1004\u1037\u103a\u1010\u1004\u103a\u101b\u1019\u100a\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b<\/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;\">\u1024\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u101e\u100a\u103a x-\u101d\u1004\u103a\u101b\u102d\u102f\u1038\u1015\u1031\u102b\u103a\u101b\u103e\u102d\u101e\u1005\u103a\u1015\u1004\u103a\u1019\u103b\u102c\u1038\u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u102c\u1010\u103d\u1004\u103a \u1001\u103d\u1032\u1001\u103c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1010\u103d\u1004\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u100a\u1037\u103a \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u1002\u100f\u1014\u103a\u1038\u1021\u101b\u1031\u1021\u1010\u103d\u1000\u103a\u1014\u103e\u1004\u1037\u103a y-\u101d\u1004\u103a\u101b\u102d\u102f\u1038\u101b\u103e\u102d \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103c\u1031\u1021\u102d\u1010\u103a\u1015\u103c\u1004\u103a\u1015\u1021\u1019\u103e\u102c\u1038\u1000\u102d\u102f\u1015\u103c\u101e\u101e\u100a\u1037\u103a \u1021\u1031\u102c\u1000\u103a\u1015\u102b\u1000\u103d\u1000\u103a\u1000\u103d\u1000\u103a\u1000\u102d\u102f \u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u1015\u1031\u1038\u101e\u100a\u103a-<\/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 \u1010\u103d\u1004\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u104f OOB \u1021\u1019\u103e\u102c\u1038\" width=\"433\" height=\"378\" srcset=\"\" sizes=\"\"><\/p>\n<p> <span style=\"color: #000000;\">\u101e\u1005\u103a\u1015\u1004\u103a\u1019\u103b\u102c\u1038\u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101e\u1031\u102c\u1021\u1001\u102b\u1010\u103d\u1004\u103a \u1001\u103d\u1032\u1001\u103c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u1010\u103d\u1004\u103a \u1000\u103b\u1015\u1014\u103a\u1038\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030 <strong>2 \u1026\u1038<\/strong> \u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1001\u103c\u1004\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u1021\u1014\u102d\u1019\u1037\u103a\u1006\u102f\u1036\u1038 OOB error \u1000\u102d\u102f\u101b\u101b\u103e\u102d\u101e\u100a\u103a\u1000\u102d\u102f \u1000\u103b\u103d\u1014\u103a\u102f\u1015\u103a\u1010\u102d\u102f\u1037\u1010\u103d\u1031\u1037\u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u104e\u1004\u103a\u1038\u101e\u100a\u103a \u1021\u1019\u103e\u1014\u103a\u1010\u1000\u101a\u103a\u1010\u103d\u1004\u103a \u1000\u1014\u1026\u1038 <strong>randomForest()<\/strong> \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1019\u103e \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u100a\u1037\u103a (\u1005\u102f\u1005\u102f\u1015\u1031\u102b\u1004\u103a\u1038 \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u1030\u1019\u103b\u102c\u1038\/3 = 6\/3 = 2) \u1014\u103e\u1004\u1037\u103a \u1000\u102d\u102f\u1000\u103a\u100a\u102e\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u1021\u1006\u1004\u1037\u103a 4- \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1015\u103c\u102f\u101c\u102f\u1015\u103a\u101b\u1014\u103a \u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1015\u102b\u104b<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">\u1014\u1031\u102c\u1000\u103a\u1006\u102f\u1036\u1038\u1010\u103d\u1004\u103a\u104a \u101c\u1031\u1037\u101c\u102c\u1010\u103d\u1031\u1037\u101b\u103e\u102d\u1001\u103b\u1000\u103a\u1021\u101e\u1005\u103a\u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a\u1015\u1010\u103a\u101e\u1000\u103a\u104d \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1015\u103c\u102f\u101c\u102f\u1015\u103a\u101b\u1014\u103a \u1001\u103b\u102d\u1014\u103a\u100a\u103e\u102d\u1011\u102c\u1038\u101e\u1031\u102c \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b<\/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;\">\u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c \u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u104f \u1010\u1014\u103a\u1016\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u1001\u103c\u1031\u1001\u1036\u104d \u1010\u1015\u103a\u1006\u1004\u103a\u1011\u102c\u1038\u101e\u1031\u102c \u1000\u103b\u1015\u1014\u103a\u1038\u101e\u1005\u103a\u1010\u1031\u102c\u1015\u102f\u1036\u1005\u1036\u101e\u100a\u103a \u1024\u1021\u1011\u1030\u1038\u1014\u1031\u1037\u1010\u103d\u1004\u103a \u1021\u102d\u102f\u1007\u102f\u1014\u103a\u1038\u1010\u1014\u103a\u1016\u102d\u102f\u1038 <b>27.19442<\/b> \u1016\u103c\u1005\u103a\u1019\u100a\u103a\u101f\u102f \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u101e\u100a\u103a\u104b<\/span><\/p>\n<p> <span style=\"color: #000000;\">\u1024\u1025\u1015\u1019\u102c\u1010\u103d\u1004\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u1031\u102c R \u1000\u102f\u1012\u103a\u1021\u1015\u103c\u100a\u1037\u103a\u1021\u1005\u102f\u1036\u1000\u102d\u102f <a href=\"https:\/\/github.com\/Statorials\/R-Guides\/blob\/main\/random_forest.R\" target=\"_blank\" rel=\"noopener noreferrer\">\u1024\u1014\u1031\u101b\u102c\u1010\u103d\u1004\u103a<\/a> \u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u101e\u100a\u103a\u104b<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u1000\u103c\u102d\u102f\u1010\u1004\u103a\u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a\u1021\u1005\u102f\u1010\u1005\u103a\u1001\u102f\u1014\u103e\u1004\u1037\u103a \u1010\u102f\u1036\u1037\u1015\u103c\u1014\u103a\u1019\u103e\u102f\u1000\u102d\u1014\u103a\u1038\u101b\u103e\u1004\u103a \u1000\u103c\u102c\u1038\u1000 \u1006\u1000\u103a\u1006\u1036\u101b\u1031\u1038\u101e\u100a\u103a \u1021\u101c\u103d\u1014\u103a\u101b\u103e\u102f\u1015\u103a\u1011\u103d\u1031\u1038\u101e\u1031\u102c\u1021\u1001\u102b\u104a \u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u1000\u103c\u102c\u1038\u101b\u103e\u102d \u1006\u1000\u103a\u1006\u1036\u101b\u1031\u1038\u1000\u102d\u102f \u1014\u1019\u1030\u1014\u102c\u101a\u1030\u101b\u1014\u103a \u101c\u102d\u102f\u1004\u103a\u1038\u1019\u101f\u102f\u1010\u103a\u101e\u1031\u102c\u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101c\u1031\u1037\u101b\u103e\u102d\u101e\u100a\u103a\u104b \u1011\u102d\u102f\u1000\u1032\u1037\u101e\u102d\u102f\u1037\u101e\u1031\u102c \u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f\u1019\u103e\u102c \u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1001\u103b\u1000\u103a\u101e\u1005\u103a \u1010\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1010\u100a\u103a\u1006\u1031\u102c\u1000\u103a\u101b\u1014\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b \u101e\u102d\u102f\u1037\u101e\u1031\u102c\u103a\u104a 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