{"id":204201,"date":"2023-07-05T07:30:00","date_gmt":"2023-07-05T07:30:00","guid":{"rendered":"https:\/\/datascientest.com\/?p=204201"},"modified":"2023-11-09T13:44:28","modified_gmt":"2023-11-09T13:44:28","slug":"indice-de-stabilite-tout-savoir","status":"publish","type":"post","link":"https:\/\/datascientest.com\/indice-de-stabilite-tout-savoir","title":{"rendered":"Indice de stabilit\u00e9 : Un outil pour \u00e9valuer les mod\u00e8les de ML"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"204201\" class=\"elementor elementor-204201\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ad721c9 e-flex e-con-boxed e-con\" data-id=\"ad721c9\" 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-0d11bbc elementor-widget elementor-widget-heading\" data-id=\"0d11bbc\" 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><h2 class=\"elementor-heading-title elementor-size-default\">L\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la fiabilit\u00e9 des mod\u00e8les de Machine Learning. D\u00e9couvrez tout ce que vous devez savoir sur cet outil, et comment l\u2019utiliser !<\/h2>\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-66064c6 e-flex e-con-boxed e-con\" data-id=\"66064c6\" 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-de42ef3 elementor-widget elementor-widget-text-editor\" data-id=\"de42ef3\" 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;\">Dans le domaine du Machine Learning, <strong>la fiabilit\u00e9 et la robustesse des mod\u00e8les de Machine Learning<\/strong> sont des \u00e9l\u00e9ments cruciaux.<\/span><\/p><p><span style=\"font-weight: 400;\">M\u00eame en pr\u00e9sence de variations ou de perturbations dans les donn\u00e9es d&rsquo;entr\u00e9e, les mod\u00e8les doivent \u00eatre capables de <strong>fournir des pr\u00e9dictions coh\u00e9rentes et pr\u00e9cises<\/strong>.<\/span><\/p><p><span style=\"font-weight: 400;\">Afin d\u2019<strong>\u00e9valuer la performance et la r\u00e9silience des mod\u00e8les<\/strong> face \u00e0 d\u00e9fis, il existe heureusement un puissant outil : l\u2019indice de stabilit\u00e9.<\/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-abc2db2 e-flex e-con-boxed e-con\" data-id=\"abc2db2\" 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-74cd83b elementor-widget elementor-widget-heading\" data-id=\"74cd83b\" 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\">Qu\u2019est-ce que l\u2019indice de stabilit\u00e9 ?<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a105e05 elementor-widget elementor-widget-text-editor\" data-id=\"a105e05\" 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 s\u2019agit d\u2019une mesure quantitative utilis\u00e9e pour \u00e9valuer la <strong>stabilit\u00e9 d\u2019un mod\u00e8le de Machine Learning<\/strong>. L\u2019objectif est de fournir des informations sur la capacit\u00e9 du mod\u00e8le \u00e0 maintenir des performances coh\u00e9rentes face aux variations dans les donn\u00e9es.<\/span><\/p><p><span style=\"font-weight: 400;\">Plus pr\u00e9cis\u00e9ment, il <strong>mesure la variation des performances du mod\u00e8le<\/strong> lorsqu\u2019il est appliqu\u00e9 \u00e0 des ensembles de donn\u00e9es similaires mais l\u00e9g\u00e8rement diff\u00e9rents.<\/span><\/p><p><span style=\"font-weight: 400;\">Ceci permet d\u2019<strong>\u00e9valuer la robustesse du mod\u00e8le<\/strong>, mais aussi sa capacit\u00e9 \u00e0 g\u00e9n\u00e9raliser les r\u00e9sultats.<\/span><\/p><p><span style=\"font-weight: 400;\">Diff\u00e9rentes m\u00e9thodes permettent de calculer cet indice. On peut notamment utiliser le <a href=\"https:\/\/datascientest.com\/bootstrap-creer-votre-page-web\">bootstrap<\/a> et la <a href=\"https:\/\/datascientest.com\/cross-validation\">validation crois\u00e9e<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">Ces approches impliquent la <strong>cr\u00e9ation d\u2019ensembles de donn\u00e9es d\u2019entra\u00eenement et de test<\/strong> \u00e0 partir des donn\u00e9es disponibles, en introduisant des variations al\u00e9atoires ou syst\u00e9matiques.<\/span><\/p><p><span style=\"font-weight: 400;\">Par la suite, le mod\u00e8le est entra\u00een\u00e9 et \u00e9valu\u00e9 sur chaque ensemble de donn\u00e9es et les performances sont mesur\u00e9es. On obtient l\u2019indice de stabilit\u00e9 en analysant leur dispersion sur les diff\u00e9rents <a href=\"https:\/\/datascientest.com\/public-datasets-machine-learning\">datasets<\/a>.<\/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-4d51b8a elementor-widget elementor-widget-image\" data-id=\"4d51b8a\" 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=\"800\" height=\"450\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele1.png\" class=\"attachment-full size-full wp-image-204222\" alt=\"\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele1.png 800w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele1-300x169.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele1-768x432.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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-bc16cf6 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"bc16cf6\" 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-machine-learning-engineer\">\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\">Tout apprendre sur l'indice de stabilit\u00e9<\/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-87e2f63 e-flex e-con-boxed e-con\" data-id=\"87e2f63\" 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-b332d52 elementor-widget elementor-widget-heading\" data-id=\"b332d52\" 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\">Un outil de s\u00e9lection de mod\u00e8le<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9ba3a85 elementor-widget elementor-widget-text-editor\" data-id=\"9ba3a85\" 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\u2019indice de stabilit\u00e9 est tr\u00e8s utile pour <strong>la s\u00e9lection de mod\u00e8le<\/strong> : une \u00e9tape incontournable en Machine Learning et Data Science.<\/span><\/p><p><span style=\"font-weight: 400;\">Il permet de comparer les performances des mod\u00e8les et de s\u00e9lectionner celui qui pr\u00e9sente la <strong>meilleure stabilit\u00e9<\/strong> pour une t\u00e2che sp\u00e9cifique.<\/span><\/p><p><span style=\"font-weight: 400;\">En effet, un mod\u00e8le stable a moins de risques de donner des r\u00e9sultats divergents ou de subir des d\u00e9gradations de performance avec des donn\u00e9es l\u00e9g\u00e8rement diff\u00e9rentes.<\/span><\/p><p><span style=\"font-weight: 400;\">Les Data Scientists peuvent utiliser cet indice pour <strong>\u00e9valuer la capacit\u00e9 des mod\u00e8les<\/strong> \u00e0 maintenir des performances coh\u00e9rentes sur des ensembles de donn\u00e9es de tests vari\u00e9s.<\/span><\/p><p><span style=\"font-weight: 400;\">Ceci leur permet de <strong>mieux choisir parmi plusieurs mod\u00e8les selon la stabilit\u00e9<\/strong>, notamment s\u2019ils pr\u00e9sentent des performances similaires en termes de pr\u00e9cision ou de rappel.<\/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-0fb1ed6 e-flex e-con-boxed e-con\" data-id=\"0fb1ed6\" 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-b0e06d0 elementor-widget elementor-widget-heading\" data-id=\"b0e06d0\" 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\">\u00c9valuation de stabilit\u00e9 face aux variations des donn\u00e9es<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a9ee70 elementor-widget elementor-widget-text-editor\" data-id=\"4a9ee70\" 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;\">Les donn\u00e9es peuvent \u00e9voluer au fil du temps, et des <strong>variations naturelles<\/strong> peuvent se produire en raison de divers facteurs.<\/span><\/p><p><span style=\"font-weight: 400;\">C\u2019est la raison pour laquelle <strong>les mod\u00e8les de Machine Learning doivent rester stables face aux variations<\/strong>. L\u00e0 encore, l\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la capacit\u00e9 d\u2019un mod\u00e8le \u00e0 s\u2019adapter aux changements et maintenir des performances satisfaisantes.<\/span><\/p><p><span style=\"font-weight: 400;\">Afin de quantifier la r\u00e9silience du mod\u00e8le, on mesure l\u2019indice sur des ensembles de donn\u00e9es refl\u00e9tant les variations attendues.<\/span><\/p><p><span style=\"font-weight: 400;\">S\u2019il reste \u00e9lev\u00e9 malgr\u00e9 les variations, cela d\u00e9montre que le mod\u00e8le est<strong> capable de s\u2019adapter et de g\u00e9n\u00e9raliser<\/strong> efficacement. Au contraire, une baisse significative refl\u00e8te un mod\u00e8le moins fiable.<\/span><\/p><p><span style=\"font-weight: 400;\">En outre, cette m\u00e9thode peut \u00eatre utilis\u00e9e pour identifier de potentiels probl\u00e8mes de stabilit\u00e9. Si un mod\u00e8le montre une stabilit\u00e9 faible lors de l\u2019\u00e9valuation sur des ensembles similaires, cela peut <strong>indiquer des erreurs de mod\u00e9lisation<\/strong>, une\u00a0<\/span><a href=\"https:\/\/datascientest.com\/overfitting-tout-savoir\" target=\"_blank\" rel=\"noopener\">sur-adaptation (overfitting)<\/a><span style=\"font-weight: 400;\">\u00a0ou d\u2019autres d\u00e9fauts \u00e0 corriger.<\/span><\/p><p><span style=\"font-weight: 400;\">D\u00e9tecter ces probl\u00e8mes \u00e0 un stade pr\u00e9coce laisse la <strong>possibilit\u00e9 d\u2019apporter des ajustements au mod\u00e8le ou d\u2019explorer d\u2019autres approches<\/strong> pour am\u00e9liorer sa stabilit\u00e9.<\/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-21e8a21 elementor-widget elementor-widget-image\" data-id=\"21e8a21\" 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=\"800\" height=\"450\" src=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele2.png\" class=\"attachment-full size-full wp-image-204223\" alt=\"\" srcset=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele2.png 800w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele2-300x169.png 300w, https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele2-768x432.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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-3041afc elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"3041afc\" 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-machine-learning-engineer\">\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\">Ma\u00eetriser l'utilisation de l'indice de stabilit\u00e9<\/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-2a99120 e-flex e-con-boxed e-con\" data-id=\"2a99120\" 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-2de8c12 elementor-widget elementor-widget-heading\" data-id=\"2de8c12\" 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\">Suivi de performances et d\u00e9tection d\u2019anomalies<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41f6b51 elementor-widget elementor-widget-text-editor\" data-id=\"41f6b51\" 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;\">Au-del\u00e0 de la stabilit\u00e9, l\u2019indice peut \u00e9galement \u00eatre utilis\u00e9 pour <strong>suivre la performance des mod\u00e8les<\/strong> en temps r\u00e9el et d\u00e9tecter d\u2019\u00e9ventuelles anomalies.<\/span><\/p><p><span style=\"font-weight: 400;\">En surveillant r\u00e9guli\u00e8rement l\u2019indice de stabilit\u00e9 sur des ensembles de donn\u00e9es de test mis \u00e0 jour, les Data Scientists peuvent \u00e9valuer la coh\u00e9rence des performances et identifier toute d\u00e9gradation significative.<\/span><\/p><p><span style=\"font-weight: 400;\">Une baisse soudaine traduit souvent un probl\u00e8me potentiel dans le mod\u00e8le ou dans les donn\u00e9es. Il peut s\u2019agir de <strong>changements inattendus dans les donn\u00e9es d\u2019entr\u00e9e, de d\u00e9gradations li\u00e9es \u00e0 des mises \u00e0 jour, ou m\u00eame d\u2019anomalies dans le dataset<\/strong> en lui-m\u00eame.<\/span><\/p><p><span style=\"font-weight: 400;\">L\u00e0 encore, d\u00e9tecter ces anomalies permet de prendre des mesures correctives comme la r\u00e9vision du mod\u00e8le, l\u2019ajustement des param\u00e8tres ou la recherche de sources d\u2019erreurs.<\/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-e93db91 e-flex e-con-boxed e-con\" data-id=\"e93db91\" 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-7acd24a elementor-widget elementor-widget-heading\" data-id=\"7acd24a\" 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\">Les limites de l\u2019indice de stabilit\u00e9<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32d1858 elementor-widget elementor-widget-text-editor\" data-id=\"32d1858\" 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\u2019indice de stabilit\u00e9 est un outil tr\u00e8s pratique, mais pr\u00e9sente plusieurs points faibles. D\u2019abord, les r\u00e9sultats peuvent \u00eatre sensibles \u00e0 la taille de l\u2019\u00e9chantillon et aux choix des m\u00e9triques de performance.<\/span><\/p><p><span style=\"font-weight: 400;\">Il ne permet pas non plus de r\u00e9soudre tous les probl\u00e8mes li\u00e9s \u00e0 la <strong>fiabilit\u00e9 des mod\u00e8les<\/strong>. Ceci concerne notamment ceux li\u00e9s aux donn\u00e9es de mauvaise qualit\u00e9 ou aux biais intrins\u00e8ques.<\/span><\/p><p><span style=\"font-weight: 400;\">Pour \u00e9viter les d\u00e9sagr\u00e9ments, il est recommand\u00e9 d\u2019utiliser des <strong>ensembles de donn\u00e9es de test repr\u00e9sentatifs et de taille ad\u00e9quate<\/strong> pour garantir une \u00e9valuation fiable de la stabilit\u00e9.<\/span><\/p><p><span style=\"font-weight: 400;\">Il est \u00e9galement important de choisir les m\u00e9triques appropri\u00e9es pour <strong>mesurer les performances du mod\u00e8le<\/strong>, en tenant compte des sp\u00e9cificit\u00e9s de la t\u00e2che \u00e0 accomplir.<\/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-54bba8b e-flex e-con-boxed e-con\" data-id=\"54bba8b\" 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-dff11df elementor-widget elementor-widget-heading\" data-id=\"dff11df\" 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\">Conclusion : l\u2019indice de stabilit\u00e9, un outil essentiel du Data Scientist<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ef74bb elementor-widget elementor-widget-text-editor\" data-id=\"2ef74bb\" 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;\">Afin d\u2019\u00e9valuer la fiabilit\u00e9 et de <strong>comparer les performances des mod\u00e8les de Machine Learning<\/strong>, l\u2019indice de stabilit\u00e9 est un outil phare de l\u2019<a href=\"https:\/\/datascientest.com\/les-outils-dans-le-quotidien-dun-data-scientist\">arsenal du Data Scientist<\/a> et de <a href=\"https:\/\/datascientest.com\/article-formation-machine-learning-engineer\">l\u2019ing\u00e9nieur ML<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">Pour apprendre \u00e0 ma\u00eetriser les meilleures techniques de science des donn\u00e9es, vous pouvez <strong>choisir DataScientest<\/strong>.<\/span><\/p><p><span style=\"font-weight: 400;\">Nos diff\u00e9rentes formations vous permettront d\u2019acqu\u00e9rir toutes les comp\u00e9tences n\u00e9cessaires pour exercer <a href=\"https:\/\/datascientest.com\/les-metiers-de-la-data\">les m\u00e9tiers de Data Scientist, ML Engineer, ou encore Data Analyst, Data Engineer et Data Product Manager<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">Tous nos cursus se compl\u00e8tent int\u00e9gralement \u00e0 distance, et permettent d\u2019<strong>obtenir une certification d\u00e9livr\u00e9e par MINES Paris ou PSL Executive \u00c9ducation<\/strong> et nos partenaires cloud <a href=\"https:\/\/datascientest.com\/amazon-web-services-tout-savoir\">AWS<\/a> et <a href=\"https:\/\/datascientest.com\/tout-savoir-sur-microsoft-azure\">Microsoft Azure<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">Concernant le financement, notre organisme est reconnu par l\u2019\u00c9tat et nos formations sont donc \u00e9ligibles au <a href=\"https:\/\/datascientest.com\/cpf-definition-utlisation\">CPF<\/a>. <strong>N\u2019attendez plus et d\u00e9couvrez DataScientest !<\/strong><\/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-6606bac elementor-widget__width-initial elementor-widget elementor-widget-video\" data-id=\"6606bac\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/youtu.be\\\/sIbCKaz-oZQ&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.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-video .elementor-widget-container{overflow:hidden;transform:translateZ(0)}.elementor-widget-video .elementor-wrapper{aspect-ratio:var(--video-aspect-ratio)}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{height:100%;width:100%;display:flex;border:none;background-color:#000}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-wrapper{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-wrapper iframe,.elementor-widget-video .elementor-wrapper video{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .elementor-open-inline .elementor-custom-embed-image-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background-size:cover;background-position:50%}.elementor-widget-video .elementor-custom-embed-image-overlay{cursor:pointer;text-align:center}.elementor-widget-video .elementor-custom-embed-image-overlay:hover .elementor-custom-embed-play i{opacity:1}.elementor-widget-video .elementor-custom-embed-image-overlay img{display:block;width:100%;aspect-ratio:var(--video-aspect-ratio);-o-object-fit:cover;object-fit:cover;-o-object-position:center center;object-position:center center}@supports not (aspect-ratio:1\/1){.elementor-widget-video .elementor-custom-embed-image-overlay{position:relative;overflow:hidden;height:0;padding-bottom:calc(100% \/ var(--video-aspect-ratio))}.elementor-widget-video .elementor-custom-embed-image-overlay img{position:absolute;top:0;right:0;bottom:0;left:0}}.elementor-widget-video .e-hosted-video .elementor-video{-o-object-fit:cover;object-fit:cover}.e-con-inner>.elementor-widget-video,.e-con>.elementor-widget-video{width:var(--container-widget-width);--flex-grow:var(--container-widget-flex-grow)}<\/style>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\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-06e6c84 elementor-align-center button-principale elementor-widget elementor-widget-button\" data-id=\"06e6c84\" 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-machine-learning-engineer\">\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\">Commencer une formation de Machine Learning Engineer<\/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-0d9d8b8 elementor-widget elementor-widget-text-editor\" data-id=\"0d9d8b8\" 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;\">Vous savez tout sur l\u2019indice de stabilit\u00e9. Pour plus d\u2019informations, d\u00e9couvrez <a href=\"https:\/\/datascientest.com\/machine-learning-tout-savoir\">notre dossier sur le Machine Learning<\/a>.<\/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-f3255ff e-flex e-con-boxed e-con\" data-id=\"f3255ff\" 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-ebbcdaf elementor-widget elementor-widget-html\" data-id=\"ebbcdaf\" 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 l\u2019indice de stabilit\u00e9 ?\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Il s\u2019agit d\u2019une mesure quantitative utilis\u00e9e pour \u00e9valuer la stabilit\u00e9 d\u2019un mod\u00e8le de Machine Learning. L\u2019objectif est de fournir des informations sur la capacit\u00e9 du mod\u00e8le \u00e0 maintenir des performances coh\u00e9rentes face aux variations dans les donn\u00e9es. Plus pr\u00e9cis\u00e9ment, il mesure la variation des performances du mod\u00e8le lorsqu\u2019il est appliqu\u00e9 \u00e0 des ensembles de donn\u00e9es similaires mais l\u00e9g\u00e8rement diff\u00e9rents.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"Un outil de s\u00e9lection de mod\u00e8le\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"L\u2019indice de stabilit\u00e9 est tr\u00e8s utile pour la s\u00e9lection de mod\u00e8le : une \u00e9tape incontournable en Machine Learning et Data Science. Il permet de comparer les performances des mod\u00e8les et de s\u00e9lectionner celui qui pr\u00e9sente la meilleure stabilit\u00e9 pour une t\u00e2che sp\u00e9cifique.\"\r\n    }\r\n  },{\r\n    \"@type\": \"Question\",\r\n    \"name\": \"\u00c9valuation de stabilit\u00e9 face aux variations des donn\u00e9es\",\r\n    \"acceptedAnswer\": {\r\n      \"@type\": \"Answer\",\r\n      \"text\": \"Les donn\u00e9es peuvent \u00e9voluer au fil du temps, et des variations naturelles peuvent se produire en raison de divers facteurs. C\u2019est la raison pour laquelle les mod\u00e8les de Machine Learning doivent rester stables face aux variations. L\u00e0 encore, l\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la capacit\u00e9 d\u2019un mod\u00e8le \u00e0 s\u2019adapter aux changements et maintenir des performances satisfaisantes.\"\r\n    }\r\n  }]\r\n}\r\n<\/script>\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>L\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la fiabilit\u00e9 des mod\u00e8les de Machine Learning. D\u00e9couvrez tout ce que vous devez savoir sur cet outil, et comment l\u2019utiliser ! Dans le domaine du Machine Learning, la fiabilit\u00e9 et la robustesse des mod\u00e8les de Machine Learning sont des \u00e9l\u00e9ments cruciaux. M\u00eame en pr\u00e9sence de variations ou de perturbations dans [&hellip;]<\/p>\n","protected":false},"author":78,"featured_media":204203,"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>Indice de stabilit\u00e9 : Un outil pour \u00e9valuer les mod\u00e8les de ML<\/title>\n<meta name=\"description\" content=\"L\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la fiabilit\u00e9 des mod\u00e8les de Machine Learning. D\u00e9couvrez tout ce que vous devez savoir sur cet outil et comment l\u2019utiliser.\" \/>\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\/indice-de-stabilite-tout-savoir\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Indice de stabilit\u00e9 : Un outil pour \u00e9valuer les mod\u00e8les de ML\" \/>\n<meta property=\"og:url\" content=\"https:\/\/datascientest.com\/indice-de-stabilite-tout-savoir\" \/>\n<meta property=\"og:site_name\" content=\"Formation Data Science | DataScientest.com\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-05T07:30:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-09T13:44:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/datascientest.com\/wp-content\/uploads\/2023\/06\/indice-de-stabilite-ml-modele.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"J\u00e9r\u00e9my Robert\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"J\u00e9r\u00e9my Robert\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/datascientest.com\/indice-de-stabilite-tout-savoir\",\"url\":\"https:\/\/datascientest.com\/indice-de-stabilite-tout-savoir\",\"name\":\"Indice de stabilit\u00e9 : Un outil pour \u00e9valuer les mod\u00e8les de ML\",\"isPartOf\":{\"@id\":\"https:\/\/datascientest.com\/#website\"},\"datePublished\":\"2023-07-05T07:30:00+00:00\",\"dateModified\":\"2023-11-09T13:44:28+00:00\",\"author\":{\"@id\":\"https:\/\/datascientest.com\/#\/schema\/person\/7af2361c48e24e79a8aa2360e6e74925\"},\"description\":\"L\u2019indice de stabilit\u00e9 permet d\u2019\u00e9valuer la fiabilit\u00e9 des mod\u00e8les de Machine Learning. 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