{"id":214,"date":"2021-08-11T18:11:14","date_gmt":"2021-08-11T16:11:14","guid":{"rendered":"https:\/\/acepartnerz.kinsta.cloud\/dstn\/?post_type=boursier&#038;p=214"},"modified":"2024-05-02T14:42:28","modified_gmt":"2024-05-02T12:42:28","slug":"youme-ousmane","status":"publish","type":"boursier","link":"https:\/\/ace-partner.org\/dstn\/boursier\/youme-ousmane\/","title":{"rendered":"YOUME Ousmane"},"content":{"rendered":"\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-primary-2-color\">Date de d\u00e9but : 01\/01\/2021<br>Date pr\u00e9visionnelle de soutenance de th\u00e8se : Juin-Juillet 2024<br>Profil ORCID : 0009- 0001-8427-8629<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-social-links is-layout-flex wp-block-social-links-is-layout-flex\"><li class=\"wp-social-link wp-social-link-linkedin  wp-block-social-link\"><a href=\"https:\/\/www.linkedin.com\/in\/ousmane-youme-700902156\/\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M19.7,3H4.3C3.582,3,3,3.582,3,4.3v15.4C3,20.418,3.582,21,4.3,21h15.4c0.718,0,1.3-0.582,1.3-1.3V4.3 C21,3.582,20.418,3,19.7,3z M8.339,18.338H5.667v-8.59h2.672V18.338z M7.004,8.574c-0.857,0-1.549-0.694-1.549-1.548 c0-0.855,0.691-1.548,1.549-1.548c0.854,0,1.547,0.694,1.547,1.548C8.551,7.881,7.858,8.574,7.004,8.574z M18.339,18.338h-2.669 v-4.177c0-0.996-0.017-2.278-1.387-2.278c-1.389,0-1.601,1.086-1.601,2.206v4.249h-2.667v-8.59h2.559v1.174h0.037 c0.356-0.675,1.227-1.387,2.526-1.387c2.703,0,3.203,1.779,3.203,4.092V18.338z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">LinkedIn<\/span><\/a><\/li><\/ul>\n\n\n\n<p><strong>Intitul\u00e9 du projet : Hyper-r\u00e9seau \u00e9volutif pour r\u00e9seaux de neurones convolutifs (CNN)&nbsp;: application \u00e0 la surveillance de l&rsquo;environnement<\/strong><\/p>\n\n\n\n<p><strong>R\u00e9sum\u00e9 du projet scientifique<\/strong> :<\/p>\n\n\n\n<p>La surveillance de l&rsquo;environnement est cruciale dans le monde d&rsquo;aujourd&rsquo;hui, confront\u00e9 \u00e0 des d\u00e9fis \u00e9cologiques croissants en raison de l&rsquo;expansion urbaine rapide, de la gestion des d\u00e9chets, de la pollution et de la pr\u00e9servation des habitats naturels. Les technologies avanc\u00e9es, en particulier les techniques d&rsquo;apprentissage profond telles que les r\u00e9seaux neuronaux convolutifs (CNN), peuvent aider \u00e0 automatiser la surveillance de l&rsquo;environnement, permettant ainsi une meilleure prise de d\u00e9cision et la conservation des \u00e9cosyst\u00e8mes. Malgr\u00e9 leur potentiel, l&rsquo;application directe des r\u00e9seaux neuronaux convolutifs (CNN) \u00e0 la surveillance de l&rsquo;environnement se heurte \u00e0 des difficult\u00e9s consid\u00e9rables en raison de la complexit\u00e9 des environnements naturels, de la diversit\u00e9 des types de donn\u00e9es et de la n\u00e9cessit\u00e9 d&rsquo;une analyse pr\u00e9cise et en temps r\u00e9el. Les principaux obstacles sont l&rsquo;obtention d&rsquo;ensembles de donn\u00e9es diversifi\u00e9s et de haute qualit\u00e9, la garantie de la g\u00e9n\u00e9ralisation du mod\u00e8le dans diff\u00e9rents \u00e9cosyst\u00e8mes, la gestion des exigences informatiques substantielles et la prise en compte de la vie priv\u00e9e, des questions \u00e9thiques et de la variabilit\u00e9 des conditions environnementales.<br>Cette th\u00e8se aborde ces d\u00e9fis en int\u00e9grant les techniques CNN avec des\u00a0<strong>algorithmes \u00e9volutionnaires<\/strong>.<\/p>\n\n\n\n<p><strong>Synth\u00e8se des r\u00e9sultats obtenus<\/strong> :<br>Dans cette th\u00e8se, nous avons explor\u00e9 plusieurs architectures CNN pour la surveillance de l&rsquo;environnement par t\u00e9l\u00e9d\u00e9tection. Nous avons d&rsquo;abord d\u00e9velopp\u00e9 un mod\u00e8le avec un<strong> Single Shot Detector<\/strong> pour identifier les d\u00e9charges ill\u00e9gales \u00e0 Saint Louis, en surmontant les difficult\u00e9s rencontr\u00e9es avec une structure CNN de base [1]. Notre \u00e9tude s&rsquo;est ensuite concentr\u00e9e sur la recherche automatis\u00e9e d&rsquo;architectures CNN, en choisissant les algorithmes g\u00e9n\u00e9tiques en raison de leurs capacit\u00e9s compl\u00e8tes de g\u00e9n\u00e9ration d&rsquo;architectures et d&rsquo;hyperparam\u00e8tres. Cela a conduit \u00e0 la cr\u00e9ation des algorithmes \u00ab\u00a0Search Length Strategy\u00a0\u00bb et \u00ab\u00a0Search Architecture Networks\u00a0\u00bb, qui ont permis de r\u00e9duire consid\u00e9rablement les besoins de calcul de 37 \u00e0 4 jours GPU par rapport \u00e0 des concurrents ayant les m\u00eames performances [2].<br>Nous avons \u00e9galement \u00e9tudi\u00e9 l&rsquo;efficacit\u00e9 de diff\u00e9rents mod\u00e8les de segmentation pour les d\u00e9chets plastiques c\u00f4tiers. Nous avons constat\u00e9 que Panoptic DeepLab \u00e9tait plus performant que Mask R-CNN pour la reconnaissance du contexte et la r\u00e9duction des faux n\u00e9gatifs, bien que Mask R-CNN soit plus performant pour minimiser les faux positifs [3].<\/p>\n\n\n\n<p>Notre collecte de donn\u00e9es a port\u00e9 sur divers contextes environnementaux tels que les d\u00e9chets c\u00f4tiers, les paysages de d\u00e9chets \u00e0 grande \u00e9chelle et les d\u00e9chets le long des berges, en utilisant des m\u00e9thodes avanc\u00e9es pour une meilleure pr\u00e9cision. <strong>Nous avons appliqu\u00e9 le formalisme de notre algorithme \u00e9volutionnaire combin\u00e9 au Mask R-CNN<\/strong> \u00e0 la d\u00e9tection de b\u00e2timents via l&rsquo;imagerie satellite, ce qui facilite le suivi du d\u00e9veloppement urbain dans les r\u00e9gions manquant de donn\u00e9es de source ouverte, et peut faciliter la g\u00e9n\u00e9ration de trajectoires pour les drones autonomes.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Date de d\u00e9but : 01\/01\/2021Date pr\u00e9visionnelle de soutenance de th\u00e8se : Juin-Juillet 2024Profil ORCID : 0009- 0001-8427-8629 Intitul\u00e9 du projet : Hyper-r\u00e9seau \u00e9volutif pour r\u00e9seaux de neurones convolutifs (CNN)&nbsp;: application \u00e0 la surveillance de l&rsquo;environnement R\u00e9sum\u00e9 du projet scientifique : La surveillance de l&rsquo;environnement est cruciale dans le monde d&rsquo;aujourd&rsquo;hui, confront\u00e9 \u00e0 des d\u00e9fis \u00e9cologiques [&hellip;]<\/p>\n","protected":false},"featured_media":1046,"menu_order":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-214","boursier","type-boursier","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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