{"id":52720,"date":"2025-12-05T08:09:40","date_gmt":"2025-12-05T13:09:40","guid":{"rendered":"https:\/\/www.uqac.ca\/uqactualites\/?p=52720"},"modified":"2025-12-05T08:09:40","modified_gmt":"2025-12-05T13:09:40","slug":"habbas-ngodjou-doukaga-etudiant-au-doctorat-en-informatique-soutient-sa-these","status":"publish","type":"post","link":"https:\/\/www.uqac.ca\/uqactualites\/2025\/12\/05\/habbas-ngodjou-doukaga-etudiant-au-doctorat-en-informatique-soutient-sa-these\/","title":{"rendered":"Habba\u2019s Ngodjou Doukaga, \u00e9tudiant au doctorat en informatique, soutient sa th\u00e8se"},"content":{"rendered":"<p>Finissant au <a href=\"https:\/\/www.uqac.ca\/programme\/3121-doctorat-en-informatique\/\" target=\"_blank\" rel=\"noopener\">doctorat en informatique<\/a>, Habba\u2019s Ngodjou Doukaga a effectu\u00e9 sa soutenance de th\u00e8se le 3 d\u00e9cembre 2025. Sous la direction de recherche de <a href=\"https:\/\/portfolio.uqac.ca\/brunobouchard\/\" target=\"_blank\" rel=\"noopener\">Bruno Bouchard<\/a>\u00a0et la codirection de <a href=\"https:\/\/portfolio.uqac.ca\/pascalfortin\/\" target=\"_blank\" rel=\"noopener\">Pascal Fortin<\/a> et de <a href=\"https:\/\/julienmaitre.wordpress.com\/enseignements\/\" target=\"_blank\" rel=\"noopener\">Julien Ma\u00eetre<\/a>, sa th\u00e8se a pour titre \u00ab Reconnaissance d\u2019activit\u00e9s \u00e0 granularit\u00e9 fine et apprentissage des activit\u00e9s de la vie quotidienne pour l\u2019assistance aux personnes en perte d\u2019autonomie \u00bb.<\/p>\n<p>Sous la pr\u00e9sidence de <a href=\"https:\/\/portfolio.uqac.ca\/hamdibenabdessalem\/\" target=\"_blank\" rel=\"noopener\">Hamdi Ben Abdessalem<\/a> (UQAC), le jury d&rsquo;\u00e9valuation \u00e9tait compos\u00e9 de Medhi Adda (UQAR) et de Sylvain Hall\u00e9 (UQAC).<\/p>\n<hr \/>\n<h5>R\u00e9sum\u00e9 de la th\u00e8se<\/h5>\n<p>Le vieillissement de la population, aggrav\u00e9 par la p\u00e9nurie de personnel m\u00e9dical, est devenu un probl\u00e8me majeur dans la plupart des pays d\u00e9velopp\u00e9s. Le maintien \u00e0 domicile des personnes \u00e2g\u00e9es en perte d&rsquo;autonomie appara\u00eet comme une n\u00e9cessit\u00e9, mais comporte des risques qu&rsquo;il faut contr\u00f4ler. Ce projet de th\u00e8se propose une nouvelle approche pour la reconnaissance d&rsquo;activit\u00e9s \u00e0 granularit\u00e9 fine dans le contexte des maisons intelligentes, en utilisant des capteurs de photopl\u00e9thysmographie (PPG) combin\u00e9s \u00e0 des acc\u00e9l\u00e9rom\u00e8tres.<\/p>\n<details>\n<summary><strong>Voir plus<\/strong><\/summary>\n<p>Notre mod\u00e8le est bas\u00e9 sur un jeu de donn\u00e9es collect\u00e9 \u00e0 partir d&rsquo;un bracelet \u00e9quip\u00e9 de capteurs PPG et d&rsquo;acc\u00e9l\u00e9rom\u00e8tres, appliqu\u00e9 \u00e0 des techniques d&rsquo;apprentissage automatique. Pour construire l&rsquo;ensemble de donn\u00e9es, nous avons d\u00e9fini 13 gestes de cuisine atomiques effectu\u00e9s par 20 participants. Les donn\u00e9es collect\u00e9es ont \u00e9t\u00e9 annot\u00e9es et mises \u00e0 disposition de la communaut\u00e9 scientifique.<\/p>\n<p>L&rsquo;originalit\u00e9 de notre approche r\u00e9side dans l&rsquo;utilisation de capteurs PPG, traditionnellement utilis\u00e9s pour la surveillance cardiaque, pour am\u00e9liorer la pr\u00e9cision de la reconnaissance d&rsquo;activit\u00e9s \u00e0 granularit\u00e9 fine. Nous avons obtenu des r\u00e9sultats prometteurs, avec une exactitude de 94,\\%, d\u00e9montrant le potentiel des capteurs PPG dans les maisons intelligentes pour la reconnaissance des activit\u00e9s dans le cadre d&rsquo;une assistance aux personnes \u00e2g\u00e9es en perte d&rsquo;autonomie.<\/p>\n<p>Cette recherche ouvre la voie \u00e0 de nouvelles perspectives pour le d\u00e9veloppement de syst\u00e8mes d&rsquo;assistance plus pr\u00e9cis et moins intrusifs, contribuant ainsi \u00e0 am\u00e9liorer la qualit\u00e9 de vie et l&rsquo;autonomie des personnes \u00e2g\u00e9es tout en assurant leur s\u00e9curit\u00e9.<\/p>\n<\/details>\n<hr \/>\n<p>F\u00e9licitations \u00e0 Habba\u2019s Ngodjou Doukaga pour la soutenance de sa th\u00e8se de doctorat!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Finissant au doctorat en informatique, Habba\u2019s Ngodjou Doukaga a effectu\u00e9 sa soutenance de th\u00e8se le 3 d\u00e9cembre 2025. Sous la direction de recherche de Bruno Bouchard\u00a0et la codirection de Pascal Fortin et de Julien Ma\u00eetre, sa th\u00e8se a pour titre \u00ab Reconnaissance d\u2019activit\u00e9s \u00e0 granularit\u00e9 fine et apprentissage des activit\u00e9s de la vie quotidienne pour [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":52724,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2844,248],"tags":[20,3004,427,293],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Habba\u2019s Ngodjou Doukaga, \u00e9tudiant au doctorat en informatique, soutient sa th\u00e8se - UQACtualit\u00e9s<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/www.uqac.ca\/uqactualites\/2025\/12\/05\/habbas-ngodjou-doukaga-etudiant-au-doctorat-en-informatique-soutient-sa-these\/\" \/>\r\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Habba\u2019s Ngodjou Doukaga, \u00e9tudiant au doctorat en informatique, soutient sa th\u00e8se - UQACtualit\u00e9s\" \/>\r\n<meta property=\"og:description\" content=\"Finissant au doctorat en informatique, Habba\u2019s Ngodjou Doukaga a effectu\u00e9 sa soutenance de th\u00e8se le 3 d\u00e9cembre 2025. 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