{"id":9696,"date":"2022-06-24T20:04:10","date_gmt":"2022-06-24T20:04:10","guid":{"rendered":"https:\/\/cscan.webix.ca\/?page_id=9696"},"modified":"2024-12-18T09:00:13","modified_gmt":"2024-12-18T14:00:13","slug":"robert-holte","status":"publish","type":"page","link":"https:\/\/cscan-infocan.ca\/fr\/robert-holte\/","title":{"rendered":"Robert Holte"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"9696\" class=\"elementor elementor-9696\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fefe32e e-flex e-con-boxed e-con e-parent\" data-id=\"3fefe32e\" 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-6feaa95 e-con-full e-flex e-con e-child\" data-id=\"6feaa95\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-75ac93e8 e-con-full e-flex e-con e-child\" data-id=\"75ac93e8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-5fbeb41c e-con-full e-flex e-con e-child\" data-id=\"5fbeb41c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8ba1e8b elementor-widget elementor-widget-heading\" data-id=\"8ba1e8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Professeur \u00e9m\u00e9rite, D\u00e9partement d'informatique\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1702154e elementor-widget elementor-widget-heading\" data-id=\"1702154e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Robert Holte\n<\/h2>\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-bea46e e-con-full e-flex e-con e-child\" data-id=\"bea46e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22d7beff elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"22d7beff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-university\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M496 128v16a8 8 0 0 1-8 8h-24v12c0 6.627-5.373 12-12 12H60c-6.627 0-12-5.373-12-12v-12H24a8 8 0 0 1-8-8v-16a8 8 0 0 1 4.941-7.392l232-88a7.996 7.996 0 0 1 6.118 0l232 88A8 8 0 0 1 496 128zm-24 304H40c-13.255 0-24 10.745-24 24v16a8 8 0 0 0 8 8h464a8 8 0 0 0 8-8v-16c0-13.255-10.745-24-24-24zM96 192v192H60c-6.627 0-12 5.373-12 12v20h416v-20c0-6.627-5.373-12-12-12h-36V192h-64v192h-64V192h-64v192h-64V192H96z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Professeur University of Alberta<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-648ca50e elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"648ca50e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26bfff0 elementor-widget elementor-widget-text-editor\" data-id=\"26bfff0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Les recherches du professeur Holte visent \u00e0 d\u00e9velopper une compr\u00e9hension scientifique et des algorithmes am\u00e9lior\u00e9s dans le domaine de l'intelligence artificielle, en particulier dans les domaines de l'apprentissage automatique et de la recherche heuristique.<\/p><p>Un algorithme d'apprentissage automatique utilise des donn\u00e9es de formation, ou l'exp\u00e9rience pass\u00e9e, pour am\u00e9liorer ses performances dans une t\u00e2che sp\u00e9cifique. Ses deux contributions les plus importantes \u00e0 l'apprentissage automatique sont le syst\u00e8me 1R (OneR) et les courbes de co\u00fbt. Le syst\u00e8me 1R est un syst\u00e8me extr\u00eamement simple, qui effectue des classifications sur la base d'une seule caract\u00e9ristique. Souvent, il est \u00e9tonnamment pr\u00e9cis. Il a \u00e9t\u00e9 cit\u00e9 plus de 2 500 fois dans des travaux de recherche issus de nombreux domaines d'\u00e9tude, soit comme classificateur, soit comme m\u00e9thode de s\u00e9lection des caract\u00e9ristiques. Les courbes de co\u00fbt sont utilis\u00e9es pour \u00e9valuer et comparer les classificateurs binaires lorsque les co\u00fbts de classification erron\u00e9e sont in\u00e9gaux ou que l'une des classes est beaucoup plus rare que l'autre. Cette m\u00e9thode est sup\u00e9rieure \u00e0 toute autre et, comme la m\u00e9thode 1R, elle est devenue un outil utile dans de nombreux domaines d'\u00e9tude.<\/p><p>Un algorithme de recherche heuristique est une m\u00e9thode rapide pour trouver les chemins optimaux entre deux n\u0153uds d'un graphe. Par exemple, si le graphe est une carte routi\u00e8re, un algorithme de recherche heuristique peut \u00eatre utilis\u00e9 pour trouver rapidement le chemin le plus court entre votre position actuelle et une destination particuli\u00e8re. La recherche heuristique est plus rapide que les m\u00e9thodes standard car elle utilise une estimation de la distance au but, appel\u00e9e fonction heuristique. Ses deux principales contributions dans ce domaine sont (a) la conception de m\u00e9thodes permettant de cr\u00e9er automatiquement des fonctions heuristiques et (b) la recherche bidirectionnelle. Il a explor\u00e9 de nombreuses approches pour r\u00e9aliser le point a) : l'apprentissage automatique et l'abstraction - qui consiste \u00e0 cartographier l'espace de recherche dans un espace de recherche abstrait, puis \u00e0 utiliser les distances r\u00e9elles dans l'espace abstrait comme estimations des distances dans l'espace de recherche original. En ce qui concerne (b), il a r\u00e9alis\u00e9 une analyse th\u00e9orique substantielle pour faire progresser notre compr\u00e9hension de la recherche bidirectionnelle, et a d\u00e9velopp\u00e9 l'algorithme MM, dont les recherches avant et arri\u00e8re sont garanties pour se \"rencontrer au milieu\", une propri\u00e9t\u00e9 qui a \u00e9chapp\u00e9 aux chercheurs pendant 50 ans.<\/p><p>Outre ces r\u00e9sultats de recherche impressionnants, il a \u00e9galement \u00e9t\u00e9 pendant de nombreuses ann\u00e9es le r\u00e9dacteur en chef de \"Machine Learning\", qui \u00e9tait alors incontestablement la meilleure revue dans ce domaine. Il a \u00e9galement \u00e9t\u00e9 l'un des fondateurs de l'Alberta Machine Intelligence Institute, qui est l'un des principaux centres d'intelligence artificielle au monde.<\/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\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Professor Emeritus, Department of Computing Science Robert Holte University of Alberta Professor Holte\u2019s research aims to develop scientific understanding and improved algorithms in the field of Artificial Intelligence, with a focus in the areas of Machine Learning and Heuristic Search. A machine learning algorithm uses training data, or past experience, to improve its performance at [&hellip;]<\/p>\n","protected":false},"author":76,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","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":"","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-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":"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":""},"mobile":{"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":""}},"footnotes":""},"class_list":["post-9696","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/pages\/9696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/users\/76"}],"replies":[{"embeddable":true,"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/comments?post=9696"}],"version-history":[{"count":3,"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/pages\/9696\/revisions"}],"predecessor-version":[{"id":24669,"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/pages\/9696\/revisions\/24669"}],"wp:attachment":[{"href":"https:\/\/cscan-infocan.ca\/fr\/wp-json\/wp\/v2\/media?parent=9696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}