{"id":4068,"date":"2020-11-01T11:56:39","date_gmt":"2020-11-01T11:56:39","guid":{"rendered":"https:\/\/detralytics.com\/?p=4068"},"modified":"2026-06-22T14:50:21","modified_gmt":"2026-06-22T14:50:21","slug":"the-reason-why-bagging-trees-outperform-decision-tree","status":"publish","type":"post","link":"https:\/\/detralytics.com\/en\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/","title":{"rendered":"The reason why bagging trees outperform decision tree&#8230;"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"4068\" class=\"elementor elementor-4068\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7e9a1b5 e-flex e-con-boxed e-con e-parent\" data-id=\"7e9a1b5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;shape_divider_bottom&quot;:&quot;tilt&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-shape elementor-shape-bottom\" aria-hidden=\"true\" data-negative=\"false\">\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 1000 100\" preserveAspectRatio=\"none\">\n\t<path class=\"elementor-shape-fill\" d=\"M0,6V0h1000v100L0,6z\"\/>\n<\/svg>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01fbdcb elementor-widget elementor-widget-heading\" data-id=\"01fbdcb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">The reason why bagging trees outperform decision tree<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9ab6f7 elementor-widget elementor-widget-heading\" data-id=\"c9ab6f7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">DetraNote 2020-4<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-87f3931 e-flex e-con-boxed e-con e-parent\" data-id=\"87f3931\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9aa7e1d e-con-full e-flex e-con e-child\" data-id=\"9aa7e1d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-67f934f elementor-widget elementor-widget-image\" data-id=\"67f934f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/Detranote_2020-4-Bagging-tree.pdf\" target=\"_blank\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"283\" height=\"400\" src=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-283x400.jpg\" class=\"elementor-animation-grow attachment-medium size-medium wp-image-1755\" alt=\"The reason why bagging trees outperform decision tree - detralytics\" srcset=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-283x400.jpg 283w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-724x1024.jpg 724w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-768x1086.jpg 768w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-1086x1536.jpg 1086w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-1448x2048.jpg 1448w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-103x146.jpg 103w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-35x50.jpg 35w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-53x75.jpg 53w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg 1810w\" sizes=\"(max-width: 283px) 100vw, 283px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-420ffe4 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"420ffe4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/Detranote_2020-4-Bagging-tree.pdf\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-down\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm0 448c-110.5 0-200-89.5-200-200S145.5 56 256 56s200 89.5 200 200-89.5 200-200 200zm-32-316v116h-67c-10.7 0-16 12.9-8.5 20.5l99 99c4.7 4.7 12.3 4.7 17 0l99-99c7.6-7.6 2.2-20.5-8.5-20.5h-67V140c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2e62cc6 e-con-full e-flex e-con e-child\" data-id=\"2e62cc6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fc5d00b elementor-widget elementor-widget-heading\" data-id=\"fc5d00b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Abstract<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1e1dc7 elementor-widget elementor-widget-text-editor\" data-id=\"f1e1dc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>One of the objectives of ensemble techniques is to improve model accuracy by driving down the variance without affecting too much the bias. In this note, we consider bagging trees. Bagging trees is an ensemble technique which consists in combining several regression trees fitted on different bootstrap samples of the training set. We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error. Moreover, we show through an example that bagging trees outperforms not only one of its constituent tree but also the best decision tree built on the entire training set.<\/p><p><strong><span style=\"color: #097566;\">Keywords: <\/span><\/strong>Bagging trees, regression tree, generalization error, Poisson deviance loss.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0f29719 e-con-full e-flex e-con e-child\" data-id=\"0f29719\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2952de9 elementor-widget__width-inherit elementor-widget elementor-widget-text-editor\" data-id=\"2952de9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Sector: <\/b>Insurance<b><\/b><\/p>\n<p><b>Authors:<\/b> Candy Mahirwe,<\/p>\n<p>Michel Denuit and Julien Trufin<\/p>\n<p><b>Publisher:<\/b> Detralytics<\/p>\n<p><b>Date:<\/b> November 2020<\/p>\n<p><b>Language:<\/b> English<\/p>\n<p><b>Pages:<\/b> 25<\/p>\n<p><b>Reference :<\/b> Detra Note 2020-4<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c6ae38d e-flex e-con-boxed e-con e-parent\" data-id=\"c6ae38d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a1c05c2 elementor-widget elementor-widget-spacer\" data-id=\"a1c05c2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f183faa elementor-widget elementor-widget-heading\" data-id=\"f183faa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">About the authors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-53f26ef e-flex e-con-boxed e-con e-parent\" data-id=\"53f26ef\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-45ca7dd e-con-full e-flex e-con e-child\" data-id=\"45ca7dd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d43f55d elementor-widget elementor-widget-image\" data-id=\"d43f55d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"782\" height=\"782\" src=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/Candy_rond.png\" class=\"attachment-large size-large wp-image-4375\" alt=\"\" srcset=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/Candy_rond.png 782w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/Candy_rond-768x768.png 768w\" sizes=\"(max-width: 782px) 100vw, 782px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f0de6fc e-con-full e-flex e-con e-child\" data-id=\"f0de6fc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-224cb75 elementor-widget elementor-widget-heading\" data-id=\"224cb75\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Candy Mahirwe<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-58dff6d elementor-widget elementor-widget-text-editor\" data-id=\"58dff6d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Candy is an Expert at Detralytics. During her various missions, Candy has worked on IAS19 valuation of pension plans in a consultancy firm; on the creation of an internal note about the analysis of spreads on loans of an insurance company; and as a life product manager in the actuarial department of an insurance company. Prior to joining Detralytics, Candy worked as an intern at AG Insurance.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b455dd6 e-flex e-con-boxed e-con e-parent\" data-id=\"b455dd6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-826b55c e-con-full e-flex e-con e-child\" data-id=\"826b55c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a4936f2 elementor-widget elementor-widget-image\" data-id=\"a4936f2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"500\" height=\"501\" src=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond.png\" class=\"attachment-large size-large wp-image-2059\" alt=\"Michel Denuit\" srcset=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond.png 500w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-400x400.png 400w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-150x150.png 150w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-100x100.png 100w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-250x250.png 250w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-320x320.png 320w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-146x146.png 146w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-50x50.png 50w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-75x75.png 75w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-85x85.png 85w, https:\/\/detralytics.com\/wp-content\/uploads\/2020\/12\/Michel_Rond-80x80.png 80w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-888af75 e-con-full e-flex e-con e-child\" data-id=\"888af75\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b42de73 elementor-widget elementor-widget-heading\" data-id=\"b42de73\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Michel Denuit<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c03f01f elementor-widget elementor-widget-text-editor\" data-id=\"c03f01f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Michel is a\u00a0Scientific Advisor at Detralytics, as well as a professor in actuarial science at the Universit\u00e9 Catholique de Louvain. He has international experience as a visiting professor, and has promoted many projects in collaboration with the industry. At Detralytics, Michel coaches young talents, provides cutting-edge training, fosters innovation and oversees R&amp;D projects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6e5786c e-flex e-con-boxed e-con e-parent\" data-id=\"6e5786c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5c6299a e-con-full e-flex e-con e-child\" data-id=\"5c6299a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff56879 elementor-widget elementor-widget-image\" data-id=\"ff56879\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/detralytics.com\/wp-content\/uploads\/2025\/08\/Julien.png\" class=\"attachment-large size-large wp-image-5905\" alt=\"Julien\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab0dd21 e-con-full e-flex e-con e-child\" data-id=\"ab0dd21\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3535bac elementor-widget elementor-widget-heading\" data-id=\"3535bac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Julien Trufin<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9aab8a elementor-widget elementor-widget-text-editor\" data-id=\"c9aab8a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Julien is a Scientific Advisor at Detralytics, as well as a professor in Actuarial Science at the department of mathematics of the Universit\u00e9 Libre de Bruxelles. Julien has experience as a consultant and a strong academic background developed at prominent institutions, including Universit\u00e9 Laval (Canada), UCL, and ULB (Belgium). At Detralytics, Julien coaches young talents, provide cutting-edge training, fosters innovation and oversees R&amp;D projects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a70ca8a e-flex e-con-boxed e-con e-parent\" data-id=\"a70ca8a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d36f5c7 elementor-widget elementor-widget-button\" data-id=\"d36f5c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/detralytics.com\/en\/publications\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-arrow-left\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M257.5 445.1l-22.2 22.2c-9.4 9.4-24.6 9.4-33.9 0L7 273c-9.4-9.4-9.4-24.6 0-33.9L201.4 44.7c9.4-9.4 24.6-9.4 33.9 0l22.2 22.2c9.5 9.5 9.3 25-.4 34.3L136.6 216H424c13.3 0 24 10.7 24 24v32c0 13.3-10.7 24-24 24H136.6l120.5 114.8c9.8 9.3 10 24.8.4 34.3z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">All Publications<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.<\/p>\n","protected":false},"author":1,"featured_media":1755,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138,1,133],"tags":[131],"class_list":["post-4068","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-138","category-new","category-publications","tag-detranote"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Detra Note : why bagging trees outperform decision tree.<\/title>\n<meta name=\"description\" content=\"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/detralytics.com\/en\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Detra Note : why bagging trees outperform decision tree.\" \/>\n<meta property=\"og:description\" content=\"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/detralytics.com\/en\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/\" \/>\n<meta property=\"og:site_name\" content=\"detralytics.com\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-01T11:56:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-22T14:50:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1810\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Detralytics\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Detralytics\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/\"},\"author\":{\"name\":\"Detralytics\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/#\\\/schema\\\/person\\\/afceedbd1f9efae3aff3db243bb1890d\"},\"headline\":\"The reason why bagging trees outperform decision tree&#8230;\",\"datePublished\":\"2020-11-01T11:56:39+00:00\",\"dateModified\":\"2026-06-22T14:50:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/\"},\"wordCount\":353,\"publisher\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/11\\\/detra-note-2020-4-cover-scaled.jpg\",\"keywords\":[\"Detra Note\"],\"articleSection\":[\"2020\",\"News\",\"Publications\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/\",\"url\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/\",\"name\":\"Detra Note : why bagging trees outperform decision tree.\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/11\\\/detra-note-2020-4-cover-scaled.jpg\",\"datePublished\":\"2020-11-01T11:56:39+00:00\",\"dateModified\":\"2026-06-22T14:50:21+00:00\",\"description\":\"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#primaryimage\",\"url\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/11\\\/detra-note-2020-4-cover-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/11\\\/detra-note-2020-4-cover-scaled.jpg\",\"width\":1810,\"height\":2560,\"caption\":\"The reason why bagging trees outperform decision tree - detralytics\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/new\\\/the-reason-why-bagging-trees-outperform-decision-tree\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/detralytics.com\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"The reason why bagging trees outperform decision tree&#8230;\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/#website\",\"url\":\"https:\\\/\\\/detralytics.com\\\/\",\"name\":\"detralytics.com\",\"description\":\"People Drive Actuarial Innovation\",\"publisher\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/detralytics.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/#organization\",\"name\":\"Detralytics\",\"url\":\"https:\\\/\\\/detralytics.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/04\\\/NEW-logo-detra.png\",\"contentUrl\":\"https:\\\/\\\/detralytics.com\\\/wp-content\\\/uploads\\\/2020\\\/04\\\/NEW-logo-detra.png\",\"width\":9329,\"height\":2348,\"caption\":\"Detralytics\"},\"image\":{\"@id\":\"https:\\\/\\\/detralytics.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/18195267\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/detralytics.com\\\/#\\\/schema\\\/person\\\/afceedbd1f9efae3aff3db243bb1890d\",\"name\":\"Detralytics\",\"url\":\"https:\\\/\\\/detralytics.com\\\/en\\\/author\\\/admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Detra Note : why bagging trees outperform decision tree.","description":"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/detralytics.com\/en\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/","og_locale":"en_GB","og_type":"article","og_title":"Detra Note : why bagging trees outperform decision tree.","og_description":"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.","og_url":"https:\/\/detralytics.com\/en\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/","og_site_name":"detralytics.com","article_published_time":"2020-11-01T11:56:39+00:00","article_modified_time":"2026-06-22T14:50:21+00:00","og_image":[{"width":1810,"height":2560,"url":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg","type":"image\/jpeg"}],"author":"Detralytics","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Detralytics","Estimated reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#article","isPartOf":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/"},"author":{"name":"Detralytics","@id":"https:\/\/detralytics.com\/#\/schema\/person\/afceedbd1f9efae3aff3db243bb1890d"},"headline":"The reason why bagging trees outperform decision tree&#8230;","datePublished":"2020-11-01T11:56:39+00:00","dateModified":"2026-06-22T14:50:21+00:00","mainEntityOfPage":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/"},"wordCount":353,"publisher":{"@id":"https:\/\/detralytics.com\/#organization"},"image":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#primaryimage"},"thumbnailUrl":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg","keywords":["Detra Note"],"articleSection":["2020","News","Publications"],"inLanguage":"en-GB"},{"@type":"WebPage","@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/","url":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/","name":"Detra Note : why bagging trees outperform decision tree.","isPartOf":{"@id":"https:\/\/detralytics.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#primaryimage"},"image":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#primaryimage"},"thumbnailUrl":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg","datePublished":"2020-11-01T11:56:39+00:00","dateModified":"2026-06-22T14:50:21+00:00","description":"We demonstrate that bagging trees performs better than one of its constituent trees in the sense of the expected generalization error.","breadcrumb":{"@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#primaryimage","url":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg","contentUrl":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/11\/detra-note-2020-4-cover-scaled.jpg","width":1810,"height":2560,"caption":"The reason why bagging trees outperform decision tree - detralytics"},{"@type":"BreadcrumbList","@id":"https:\/\/detralytics.com\/new\/the-reason-why-bagging-trees-outperform-decision-tree\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/detralytics.com\/en\/"},{"@type":"ListItem","position":2,"name":"The reason why bagging trees outperform decision tree&#8230;"}]},{"@type":"WebSite","@id":"https:\/\/detralytics.com\/#website","url":"https:\/\/detralytics.com\/","name":"detralytics.com","description":"People Drive Actuarial Innovation","publisher":{"@id":"https:\/\/detralytics.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/detralytics.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/detralytics.com\/#organization","name":"Detralytics","url":"https:\/\/detralytics.com\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/detralytics.com\/#\/schema\/logo\/image\/","url":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/04\/NEW-logo-detra.png","contentUrl":"https:\/\/detralytics.com\/wp-content\/uploads\/2020\/04\/NEW-logo-detra.png","width":9329,"height":2348,"caption":"Detralytics"},"image":{"@id":"https:\/\/detralytics.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/18195267\/"]},{"@type":"Person","@id":"https:\/\/detralytics.com\/#\/schema\/person\/afceedbd1f9efae3aff3db243bb1890d","name":"Detralytics","url":"https:\/\/detralytics.com\/en\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/posts\/4068","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/comments?post=4068"}],"version-history":[{"count":12,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/posts\/4068\/revisions"}],"predecessor-version":[{"id":7879,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/posts\/4068\/revisions\/7879"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/media\/1755"}],"wp:attachment":[{"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/media?parent=4068"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/categories?post=4068"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/detralytics.com\/en\/wp-json\/wp\/v2\/tags?post=4068"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}