Un mod\u00e8le pr\u00e9-entra\u00een\u00e9 est un mod\u00e8le d’apprentissage automatique d\u00e9j\u00e0 entra\u00een\u00e9 sur un vaste ensemble de donn\u00e9es. Qu’est-ce que mod\u00e8le pr\u00e9-entra\u00een\u00e9 ? C’est comme un apprenti ayant d\u00e9j\u00e0 acquis des comp\u00e9tences de base et pr\u00eat \u00e0 se sp\u00e9cialiser dans un domaine pr\u00e9cis.<\/p>\n
Imaginez un boulanger qui sait d\u00e9j\u00e0 p\u00e9trir la p\u00e2te, allumer le four et contr\u00f4ler la temp\u00e9rature. Ce savoir-faire de base lui permet d’apprendre plus rapidement \u00e0 faire des croissants, des baguettes ou des g\u00e2teaux. De m\u00eame, un mod\u00e8le pr\u00e9-entra\u00een\u00e9 a d\u00e9j\u00e0 appris les bases du langage, de la reconnaissance d’images ou d’autres t\u00e2ches gr\u00e2ce \u00e0 un entra\u00eenement initial sur un large jeu de donn\u00e9es. Il peut ensuite \u00eatre affin\u00e9 pour des t\u00e2ches plus sp\u00e9cifiques.
\nCe vaste ensemble de donn\u00e9es initial permet au mod\u00e8le d’apprendre des repr\u00e9sentations g\u00e9n\u00e9rales et r\u00e9utilisables. Lorsqu’il est ensuite confront\u00e9 \u00e0 une nouvelle t\u00e2che, il peut s’appuyer sur ces connaissances pr\u00e9alables au lieu de partir de z\u00e9ro. L’affinage consiste alors \u00e0 adapter le mod\u00e8le \u00e0 la t\u00e2che sp\u00e9cifique en l’entra\u00eenant sur un jeu de donn\u00e9es plus petit et pertinent.<\/p>\n
En prompt engineering, les mod\u00e8les pr\u00e9-entra\u00een\u00e9s sont essentiels car ils permettent de gagner du temps et des ressources. Au lieu d’entra\u00eener un mod\u00e8le \u00e0 partir de z\u00e9ro, ce qui peut prendre des semaines et n\u00e9cessiter d’\u00e9normes quantit\u00e9s de donn\u00e9es, vous pouvez utiliser un mod\u00e8le pr\u00e9-entra\u00een\u00e9 et l’adapter \u00e0 vos besoins sp\u00e9cifiques en quelques heures seulement. De plus, l’utilisation de mod\u00e8les pr\u00e9-entra\u00een\u00e9s permet d’obtenir de meilleures performances, notamment lorsque les donn\u00e9es d’entra\u00eenement pour la t\u00e2che sp\u00e9cifique sont limit\u00e9es. Par exemple, un mod\u00e8le pr\u00e9-entra\u00een\u00e9 sur un corpus de texte massif peut \u00eatre affin\u00e9 pour effectuer de la traduction, de la classification de texte ou de la g\u00e9n\u00e9ration de texte.<\/p>\n
Un mod\u00e8le pr\u00e9-entra\u00een\u00e9 est un mod\u00e8le d’apprentissage automatique d\u00e9j\u00e0 entra\u00een\u00e9 sur un vaste ensemble de donn\u00e9es. Qu’est-ce que mod\u00e8le pr\u00e9-entra\u00een\u00e9 ? C’est comme un apprenti ayant d\u00e9j\u00e0 acquis des comp\u00e9tences de base et pr\u00eat \u00e0 se sp\u00e9cialiser dans un domaine pr\u00e9cis. Comment fonctionne un mod\u00e8le pr\u00e9-entra\u00een\u00e9 ? Imaginez un boulanger qui sait d\u00e9j\u00e0 p\u00e9trir la […]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[157],"tags":[163,330,57,329,203,12],"class_list":["post-320","post","type-post","status-publish","format-standard","hentry","category-m","tag-apprentissage-par-transfert","tag-fine-tuning-affinage","tag-intelligence-artificielle","tag-jeu-de-donnees-dentrainement","tag-modele-pre-entraine","tag-prompt-engineering"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"","author_link":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/author\/"},"uagb_comment_info":0,"uagb_excerpt":"Un mod\u00e8le pr\u00e9-entra\u00een\u00e9 est un mod\u00e8le d’apprentissage automatique d\u00e9j\u00e0 entra\u00een\u00e9 sur un vaste ensemble de donn\u00e9es. Qu’est-ce que mod\u00e8le pr\u00e9-entra\u00een\u00e9 ? C’est comme un apprenti ayant d\u00e9j\u00e0 acquis des comp\u00e9tences de base et pr\u00eat \u00e0 se sp\u00e9cialiser dans un domaine pr\u00e9cis. Comment fonctionne un mod\u00e8le pr\u00e9-entra\u00een\u00e9 ? Imaginez un boulanger qui sait d\u00e9j\u00e0 p\u00e9trir la\u2026","_links":{"self":[{"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/posts\/320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/comments?post=320"}],"version-history":[{"count":1,"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/posts\/320\/revisions"}],"predecessor-version":[{"id":496,"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/posts\/320\/revisions\/496"}],"wp:attachment":[{"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/media?parent=320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/categories?post=320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/happynumeric.com\/lexique-intelligence-artificielle\/wp-json\/wp\/v2\/tags?post=320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}