{"id":230955,"date":"2024-02-07T10:29:07","date_gmt":"2024-02-07T10:29:07","guid":{"rendered":"https:\/\/datascientest.com\/?p=230955"},"modified":"2024-10-12T05:43:11","modified_gmt":"2024-10-12T05:43:11","slug":"xgboost-tout-savoir","status":"publish","type":"post","link":"https:\/\/datascientest.com\/xgboost-tout-savoir","title":{"rendered":"Xgboost : tout savoir sur cet algorithme de Gradient Boosting"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"230955\" class=\"elementor elementor-230955\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e081b03 e-flex e-con-boxed e-con\" data-id=\"e081b03\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2406bcf elementor-widget elementor-widget-heading\" data-id=\"2406bcf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><p class=\"elementor-heading-title elementor-size-default\">Pr\u00e9dire ce qui va se passer. Tenter de d\u00e9duire des diagnostics... Nous avons l\u00e0 des pr\u00e9occupations majeures de tr\u00e8s nombreuses activit\u00e9s. Diverses approches ont \u00e9t\u00e9 tent\u00e9es afin que de telles objectifs puissent \u00eatre accomplis. L\u2019une des techniques mises \u00e0 profit \u00e0 cet effet est l\u2019apprentissage automatique et Xgboost est un fleuron du lot.<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da92fb3 elementor-widget elementor-widget-text-editor\" data-id=\"da92fb3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/datascientest.com\/xgboost-grand-gagnant-des-competitions-machine-learning-algorithme\">XGBoost<\/a> est une <strong>technique d&rsquo;apprentissage automatique qui exploite des arbres de d\u00e9cision<\/strong> en vue d\u2019op\u00e9rer des pr\u00e9dictions. Pour faire simple, nous pouvons dire que\u00a0 XGBoost \u00e9labore une suite d&rsquo;arbres de d\u00e9cision et que chacun de ces arbres s\u2019\u00e9vertue \u00e0 corriger les inexactitudes ou imperfections du pr\u00e9c\u00e9dent.\u00a0 Ainsi, \u00e0 chaque \u00e9tape , les <strong>pr\u00e9dictions<\/strong> deviennent de plus en plus pr\u00e9cises.<\/span><\/p><p><span style=\"font-weight: 400;\">D\u2019un point de vue plus pratique, XGBoost r\u00e9pond \u00e0 des questions en <strong>se basant sur des donn\u00e9es historiques (ou donn\u00e9es d&rsquo;entra\u00eenement)<\/strong> en vue de pr\u00e9dire les r\u00e9ponses \u00e0 des donn\u00e9es plus fra\u00eeches.<\/span><\/p>\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<div class=\"elementor-element elementor-element-200a721 e-flex e-con-boxed e-con\" data-id=\"200a721\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-903aca2 elementor-widget elementor-widget-heading\" data-id=\"903aca2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\u00c0 quels types de probl\u00e8mes s\u2019applique XGBoost ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c14ca69 elementor-widget elementor-widget-text-editor\" data-id=\"c14ca69\" data-element_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<p><span style=\"font-weight: 400;\">Un tel <a href=\"https:\/\/datascientest.com\/apprentissage-automatique\">apprentissage automatique<\/a> vise \u00e0 r\u00e9soudre des probl\u00e8mes fort concrets tels que les suivants :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Le message que j\u2019ai re\u00e7u est-il un spam ou s\u2019agit-il d\u2019un courriel l\u00e9gitime ?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Combien d&rsquo;exemplaires de cet article devraient \u00eatre vendues le mois prochain ?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dans quel ordre divers produits devraient-ils \u00eatre recommand\u00e9s \u00e0 un utilisateur particulier ?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Quelle est la probabilit\u00e9 qu\u2019un visiteur d\u2019une page Web clique sur une publicit\u00e9 particuli\u00e8re ?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Etc.<\/span><\/li><\/ul>\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<div class=\"elementor-element elementor-element-d5ed5ed e-flex e-con-boxed e-con\" data-id=\"d5ed5ed\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9226a34 elementor-widget elementor-widget-heading\" data-id=\"9226a34\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Qui a cr\u00e9\u00e9 XGBoost ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f652654 elementor-widget elementor-widget-text-editor\" data-id=\"f652654\" data-element_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<p><span style=\"font-weight: 400;\">XGBoost est n\u00e9 en 2014 sous l\u2019impulsion de <strong>Tianqi Chen<\/strong>, un chercheur en informatique, alors \u00e9tudiant \u00e0 l&rsquo;Universit\u00e9 de Washington.<\/span><\/p><p><span style=\"font-weight: 400;\">Bien des outils d\u2019apprentissage automatique existaient d\u00e9j\u00e0, tels que <a href=\"https:\/\/datascientest.com\/random-forest-definition\">Random Forest<\/a>, <a href=\"https:\/\/datascientest.com\/algorithmes-de-boosting-adaboost-gradient-boosting-xgboost\">Adaboost<\/a> ou <a href=\"https:\/\/datascientest.com\/knn\">k-NN<\/a>. Ces algorithmes lui semblaient efficaces et pertinents, mais insuffisamment rapides et performants. Tian Cheng a donc veill\u00e9 \u00e0 rendre XGBoost <strong>non seulement efficace mais aussi<\/strong> <strong>extr\u00eamement rapide<\/strong>, gr\u00e2ce \u00e0 diverses m\u00e9thodes d\u2019optimisation.<\/span><\/p><p><span style=\"font-weight: 400;\">Cheng Tianqi Chen \u00e9tait par ailleurs <strong>motiv\u00e9 par les comp\u00e9titions d\u2019apprentissage automatique<\/strong>, en particulier celles organis\u00e9es sur le site <a href=\"http:\/\/Kaggle.com\">Kaggle.com<\/a>.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">XGBoost est <strong>rapidement devenu l&rsquo;une des biblioth\u00e8ques d&rsquo;apprentissage automatique les plus populaires<\/strong> du domaine du fait de performances exceptionnelles, de son adaptabilit\u00e9 \u00e0 diff\u00e9rents types de t\u00e2ches et la pr\u00e9sence\u00a0 de nombreuses options pour un ajustement fin.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d853c6e elementor-widget elementor-widget-image\" data-id=\"d853c6e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"701\" height=\"600\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-1.jpg\" class=\"attachment-full size-full wp-image-230970\" alt=\"\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-1.jpg 701w, https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-1-300x257.jpg 300w\" sizes=\"(max-width: 701px) 100vw, 701px\" \/>\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-77619ee elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"77619ee\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/formation-intelligence-artificielle\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Savoir plus sur XGBoost<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\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-1619eec e-flex e-con-boxed e-con\" data-id=\"1619eec\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2caeab9 elementor-widget elementor-widget-heading\" data-id=\"2caeab9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Comment fonctionne Xgboost ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d832d64 elementor-widget elementor-widget-text-editor\" data-id=\"d832d64\" data-element_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<p><span style=\"font-weight: 400;\">Voyons ici comment XGBoost fonctionne, d\u2019une mani\u00e8re simplifi\u00e9e:<\/span><\/p><ol><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">XGBoost effectue une <strong>pr\u00e9diction simple<\/strong>, par exemple \u00e0 partir d\u2019une moyenne de diverses observations pass\u00e9es dans un domaine particulier<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">XGBoost \u00e9value ensuite les <strong>erreurs (r\u00e9sidus)<\/strong> entre les pr\u00e9dictions et les valeurs r\u00e9elles.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Un <strong>arbre de d\u00e9cision<\/strong> est construit afin de pr\u00e9dire ces erreurs.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Les pr\u00e9dictions initiales sont mises \u00e0 jour \u00e0 partir des pr\u00e9dictions de l&rsquo;arbre.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Les \u00e9tapes 2 \u00e0 4 sont r\u00e9p\u00e9t\u00e9es plusieurs fois, chaque nouvel arbre se concentrant sur les erreurs issues se la somme des arbres pr\u00e9c\u00e9dents.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Une fois tous les arbres \u00e9labor\u00e9s, les pr\u00e9dictions de chacun sont somm\u00e9es en vue d\u2019obtenir une pr\u00e9diction finale.<\/span><\/li><\/ol>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-303d5da elementor-widget elementor-widget-text-editor\" data-id=\"303d5da\" data-element_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<p><span style=\"font-weight: 400;\">Il est bon de savoir aussi que Cheng a\u00a0 introduit des techniques aidant \u00e0 \u00e9viter le <a href=\"https:\/\/datascientest.com\/overfitting-tout-savoir\">surapprentissage<\/a>. Celui-ci a tendance \u00e0 se produire lorsqu&rsquo;un mod\u00e8le int\u00e8gre \u00e0 l\u2019exc\u00e8s les anomalies ou variations, au lieu de comprendre les tendances g\u00e9n\u00e9rales du mod\u00e8le.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31b6522 elementor-widget elementor-widget-heading\" data-id=\"31b6522\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Dans la pratique<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-427568d elementor-widget elementor-widget-text-editor\" data-id=\"427568d\" data-element_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<p><span style=\"font-weight: 400;\">Lorsque l\u2019on utilise XGBoost dans un environnement de programmation (tel que <a href=\"https:\/\/datascientest.com\/machine-learning-python-par-ou-commencer\">Python<\/a>), il nous faut :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Charger les donn\u00e9es.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">D\u00e9finir des param\u00e8tres propres \u00e0 XGBoost (comme le nombre d&rsquo;arbres \u00e0 \u00e9laborer ).<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Entrainer le mod\u00e8le XGBoost sur nos donn\u00e9es.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Utiliser ce mod\u00e8le pour op\u00e9rer des pr\u00e9dictions sur de nouvelles donn\u00e9es.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8d2d93f elementor-widget elementor-widget-heading\" data-id=\"8d2d93f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Un exemple concret<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-634b2ab elementor-widget elementor-widget-text-editor\" data-id=\"634b2ab\" data-element_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<p><span style=\"font-weight: 400;\">Une banque souhaite pr\u00e9dire au mieux si un demandeur de pr\u00eat sera en mesure de rembourser son pr\u00eat.<\/span><\/p><p><span style=\"font-weight: 400;\">Avec XGBoost, elle peut partir de l\u2019historique des demandeurs de pr\u00eats et prendre en compte des informations telles que :<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Revenu annuel<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Historique de cr\u00e9dit<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Statut matrimonial<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Depuis combien de temps la personne travaille<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Les caract\u00e9ristiques du pr\u00eat demand\u00e9\u00a0<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Est-ce que le pr\u00eat a \u00e9t\u00e9 rembours\u00e9 sans souci ?<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">etc.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a680dff elementor-widget elementor-widget-image\" data-id=\"a680dff\" data-element_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=\"702\" height=\"600\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-2.jpg\" class=\"attachment-full size-full wp-image-230971\" alt=\"\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-2.jpg 702w, https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-2-300x256.jpg 300w\" sizes=\"(max-width: 702px) 100vw, 702px\" \/>\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-71ab006 elementor-widget elementor-widget-text-editor\" data-id=\"71ab006\" data-element_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<p><span style=\"font-weight: 400;\">\u00c0 partir de telles donn\u00e9es , il va \u00eatre possible d&rsquo;\u00e9valuer avec XGBoost si le demandeur actuel a de bonnes chances de rembourser son emprunt.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ea6b4c3 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"ea6b4c3\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/formation-intelligence-artificielle\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Apprendre \u00e0 utiliser XGBoost<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\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-4bc677d e-flex e-con-boxed e-con\" data-id=\"4bc677d\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bc1484c elementor-widget elementor-widget-heading\" data-id=\"bc1484c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">\u00c0 l\u2019\u0153uvre dans une multitude d\u2019industries<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f2489ef elementor-widget elementor-widget-text-editor\" data-id=\"f2489ef\" data-element_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<p><span style=\"font-weight: 400;\">XGBoost est utilis\u00e9 dans de nombreuses industries sur des cas tr\u00e8s concrets. En voici quelques exemples.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6adbdd1 elementor-widget elementor-widget-heading\" data-id=\"6adbdd1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Finance<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5577d69 elementor-widget elementor-widget-text-editor\" data-id=\"5577d69\" data-element_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<p><span style=\"font-weight: 400;\">Xgboost aide \u00e0 <strong>identifier des transactions suspectes<\/strong>, par exemple une fraude \u00e0 la carte de cr\u00e9dit.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-942260a elementor-widget elementor-widget-heading\" data-id=\"942260a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">M\u00e9dical<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bba1f78 elementor-widget elementor-widget-text-editor\" data-id=\"bba1f78\" data-element_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<p><span style=\"font-weight: 400;\">XGBoost peut aider \u00e0 <strong>diagnostiquer des maladies sur la base de sympt\u00f4mes<\/strong> du patient ou d&rsquo;analyses m\u00e9dicales. Un h\u00f4pital sera int\u00e9ress\u00e9 \u00e0 la pr\u00e9dire les r\u00e9admissions de patients.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4b2c41 elementor-widget elementor-widget-heading\" data-id=\"e4b2c41\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">E-commerce<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6385683 elementor-widget elementor-widget-text-editor\" data-id=\"6385683\" data-element_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<p><span style=\"font-weight: 400;\">L\u2019outil peut \u00eatre utilis\u00e9 pour <strong>pr\u00e9dire<\/strong> quels articles un utilisateur serait susceptible d\u2019acheter, en fonction de son historique d&rsquo;achat.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5333508 elementor-widget elementor-widget-heading\" data-id=\"5333508\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Services en ligne<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-02285dc elementor-widget elementor-widget-text-editor\" data-id=\"02285dc\" data-element_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<p><span style=\"font-weight: 400;\">Des entreprises, telles que <a href=\"https:\/\/datascientest.com\/google-lumiere-revolution-video-ia\">Google<\/a> ou <a href=\"https:\/\/datascientest.com\/facebook-prophet-tout-savoir\">Facebook<\/a>, utilisent XGBoost pour une <strong>vari\u00e9t\u00e9 de t\u00e2ches<\/strong> : recommandation de vid\u00e9os, mod\u00e9ration de contenu, d\u00e9tection des spams.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b02d1f5 elementor-widget elementor-widget-heading\" data-id=\"b02d1f5\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Agriculture<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aed553c elementor-widget elementor-widget-text-editor\" data-id=\"aed553c\" data-element_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<p><span style=\"font-weight: 400;\">Cet outil d\u2019apprentissage automatique peut aider \u00e0 <strong>d\u00e9tecter des maladies des plantes<\/strong> et pr\u00e9voir le rendement d\u2019une culture.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-43c17bb elementor-widget elementor-widget-heading\" data-id=\"43c17bb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Immobilier<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fab04d8 elementor-widget elementor-widget-text-editor\" data-id=\"fab04d8\" data-element_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<p><span style=\"font-weight: 400;\">Aide \u00e0 l\u2019<strong>estimation du prix de vente<\/strong> d&rsquo;un bien immobilier selon ses diverses\u00a0 caract\u00e9ristiques.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-214c567 elementor-widget elementor-widget-heading\" data-id=\"214c567\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">\u00c9nergie<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56cf78c elementor-widget elementor-widget-text-editor\" data-id=\"56cf78c\" data-element_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<p><span style=\"font-weight: 400;\"><strong>Pr\u00e9vision<\/strong> de la demande en \u00e9lectricit\u00e9 et autres ressources \u00e9nerg\u00e9tiques.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-966fa3c elementor-widget elementor-widget-heading\" data-id=\"966fa3c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Publicit\u00e9 en ligne<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d100e8 elementor-widget elementor-widget-text-editor\" data-id=\"6d100e8\" data-element_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<p><span style=\"font-weight: 400;\">Quelles sont les chances pour qu\u2019un utilisateur donn\u00e9 clique sur une publicit\u00e9 en ligne ?<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8eadc32 elementor-widget elementor-widget-heading\" data-id=\"8eadc32\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Transport<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2d091f elementor-widget elementor-widget-text-editor\" data-id=\"b2d091f\" data-element_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<p><span style=\"font-weight: 400;\">Quelle peut \u00eatre la <strong>demande pour certains v\u00e9hicules<\/strong> \u00e0 divers moments ou lieux ?<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9239935 elementor-widget elementor-widget-heading\" data-id=\"9239935\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-medium\">Sciences et recherche<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdaf51a elementor-widget elementor-widget-text-editor\" data-id=\"bdaf51a\" data-element_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<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/datascientest.com\/machine-learning-sentiment-analysis\">Analyse de sentiments<\/a> dans divers types de textes.<\/span><\/p>\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<div class=\"elementor-element elementor-element-fd61e7f e-flex e-con-boxed e-con\" data-id=\"fd61e7f\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-757ec8b elementor-widget elementor-widget-heading\" data-id=\"757ec8b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Une solution robuste<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-037d01f elementor-widget elementor-widget-text-editor\" data-id=\"037d01f\" data-element_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<p><span style=\"font-weight: 400;\">Ces diverses industries recourent \u00e0 XGBoost du fait de <strong>sa capacit\u00e9 \u00e0 g\u00e9rer des ensembles de donn\u00e9es volumineux et de ses hautes performances<\/strong>, mais aussi sa capacit\u00e9 \u00e0 bien fonctionner m\u00eame si certaines informations sont absentes ou manquantes, ce qui arrive souvent dans la vie r\u00e9elle.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1903141 elementor-widget elementor-widget-image\" data-id=\"1903141\" data-element_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=\"683\" height=\"600\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2024\/02\/xgboost-datascientest-3.jpg\" class=\"attachment-full size-full wp-image-230975\" alt=\"\" \/>\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-4633a36 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"4633a36\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm elementor-animation-grow\" href=\"https:\/\/datascientest.com\/formation-intelligence-artificielle\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Se former \u00e0 XGBoost<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-36dd1b2 elementor-widget elementor-widget-html\" data-id=\"36dd1b2\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Qu\u2019est-ce que XGBoost ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"XGBoost est une technique d'apprentissage automatique qui exploite des arbres de d\u00e9cision en vue d\u2019op\u00e9rer des pr\u00e9dictions. Pour faire simple, nous pouvons dire que  XGBoost \u00e9labore une suite d'arbres de d\u00e9cision et que chacun de ces arbres s\u2019\u00e9vertue \u00e0 corriger les inexactitudes ou imperfections du pr\u00e9c\u00e9dent.  Ainsi, \u00e0 chaque \u00e9tape , les pr\u00e9dictions deviennent de plus en plus pr\u00e9cises.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Qui a cr\u00e9\u00e9 XGBoost ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"XGBoost est n\u00e9 en 2014 sous l\u2019impulsion de Tianqi Chen, un chercheur en informatique, alors \u00e9tudiant \u00e0 l'Universit\u00e9 de Washington.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Pourquoi XGBoost est utilis\u00e9 dans plusieurs domaines ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Ces diverses industries recourent \u00e0 XGBoost du fait de sa capacit\u00e9 \u00e0 g\u00e9rer des ensembles de donn\u00e9es volumineux et de ses hautes performances mais aussi sa capacit\u00e9 \u00e0 bien fonctionner m\u00eame si certaines informations sont absentes ou manquantes, ce qui arrive souvent dans la vie r\u00e9elle.\"\r\n    }\r\n  }]\r\n}\r\n<\/script>\r\n\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\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9dire ce qui va se passer. Tenter de d\u00e9duire des diagnostics&#8230; Nous avons l\u00e0 des pr\u00e9occupations majeures de tr\u00e8s nombreuses activit\u00e9s. Diverses approches ont \u00e9t\u00e9 tent\u00e9es afin que de telles objectifs puissent \u00eatre accomplis. L\u2019une des techniques mises \u00e0 profit \u00e0 cet effet est l\u2019apprentissage automatique et Xgboost est un fleuron du lot. XGBoost est [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":230956,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2497],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Xgboost : tout savoir sur cet algorithme de Gradient Boosting<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/datascientest.com\/xgboost-tout-savoir\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Xgboost : tout savoir sur cet algorithme de Gradient Boosting\" \/>\n<meta property=\"og:url\" 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