{"id":5,"date":"2011-09-26T15:32:24","date_gmt":"2011-09-26T18:32:24","guid":{"rendered":"https:\/\/wp.ufpel.edu.br\/gaia\/"},"modified":"2026-09-05T12:55:54","modified_gmt":"2026-09-05T15:55:54","slug":"home","status":"publish","type":"page","link":"https:\/\/wp.ufpel.edu.br\/gaia\/","title":{"rendered":"Apresenta\u00e7\u00e3o"},"content":{"rendered":"<div id=\"pl-5\"  class=\"panel-layout\" ><div id=\"pg-5-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-5-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-5-0-0-0\" class=\"so-panel widget widget_sow-editor panel-first-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<!-- ============================================================ BLOCO: SOBRE O GAIA ============================================================ -->\n\n<section class=\"gaia-section\">\n<div class=\"gaia-wrap gaia-about\">\n<div>\n<p class=\"gaia-eyebrow\">Sobre o GAIA<\/p>\n\n<h2 class=\"gaia-h2\">Pesquisa em IA com rigor acad\u00eamico e responsabilidade social.<\/h2>\n<\/div>\n<div>\n<p class=\"gaia-lead\">O Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial da UFPel re\u00fane docentes, pesquisadores e\nestudantes em torno da investiga\u00e7\u00e3o te\u00f3rica e pr\u00e1tica de t\u00e9cnicas de IA. Atuamos no\ndesenvolvimento de tecnologias inovadoras em parceria com a ind\u00fastria e com a comunidade,\ne mantemos um olhar cr\u00edtico sobre os impactos sociais e \u00e9ticos da \u00e1rea, dado seu car\u00e1ter\ntransdisciplinar.<\/p>\n<p style=\"margin-top: 28px;\"><a class=\"gaia-btn gaia-btn--ghost\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/category\/projetos\/\">Ver projetos do grupo<\/a><\/p>\n\n<\/div>\n<\/div>\n<\/section><!-- ============================================================ BLOCO: PARCEIROS E APOIADORES (MARQUEE) Duplicar a lista de logos \u00e9 necess\u00e1rio para o loop cont\u00ednuo. ============================================================ -->\n\n<section class=\"gaia-section gaia-partners\">\n<div class=\"gaia-wrap\">\n<p class=\"gaia-eyebrow\" style=\"text-align: center;\">Parceiros e apoiadores<\/p>\n\n<h2 class=\"gaia-h2\" style=\"text-align: center; font-size: clamp(22px,3vw,30px);\">Institui\u00e7\u00f5es e empresas que apoiam o GAIA<\/h2>\n<\/div>\n<div class=\"gaia-marquee\">\n<div class=\"gaia-track\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/concys.png?w=720&#038;ssl=1\" alt=\"Logo Concys\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/vitech.png?w=720&#038;ssl=1\" alt=\"Logo Vitech\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/labcee-1.png?w=720&#038;ssl=1\" alt=\"Logo LabCEE\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/logo_GES3E.png?w=720&#038;ssl=1\" alt=\"Logo GES3E\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2025\/12\/sponsors-boti-e88421e0b06d50305bbff5ed2ec5461d.png?w=720&#038;ssl=1\" alt=\"Logo Funda\u00e7\u00e3o Grupo Botic\u00e1rio\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2025\/12\/29154103-20110322093619logo-vertical-color-sem-descricao.jpg?w=720&#038;ssl=1\" alt=\"Logo Fapergs\" \/>\n<!-- c\u00f3pia para o loop cont\u00ednuo (aria-hidden para n\u00e3o duplicar na leitura de tela) -->\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/concys.png?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/vitech.png?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/labcee-1.png?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2021\/05\/logo_GES3E.png?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2025\/12\/sponsors-boti-e88421e0b06d50305bbff5ed2ec5461d.png?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/>\n<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2025\/12\/29154103-20110322093619logo-vertical-color-sem-descricao.jpg?w=720&#038;ssl=1\" alt=\"\" aria-hidden=\"true\" \/><\/div>\n<\/div>\n<\/section>\n<!-- ============================================================\nBLOCO: \u00c1REAS DE ATUA\u00c7\u00c3O\n============================================================ -->\n<section class=\"gaia-section gaia-areas\">\n<div class=\"gaia-wrap\">\n<p class=\"gaia-eyebrow\">\u00c1reas de atua\u00e7\u00e3o<\/p>\n<h2 class=\"gaia-h2\">Temas de pesquisa do grupo<\/h2>\n<div class=\"gaia-grid\">\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><path d=\"M4 17V9m5 8V5m5 12v-6m5 6V7\"><\/path><\/svg>\n<h3>Aprendizado de M\u00e1quina<\/h3>\n<p>Modelos preditivos e m\u00e9todos estat\u00edsticos aplicados a dados reais.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><circle cx=\"5\" cy=\"6\" r=\"2\"><\/circle><circle cx=\"5\" cy=\"18\" r=\"2\"><\/circle><circle cx=\"12\" cy=\"12\" r=\"2\"><\/circle><circle cx=\"19\" cy=\"6\" r=\"2\"><\/circle><circle cx=\"19\" cy=\"18\" r=\"2\"><\/circle><path d=\"M7 7l3 4M7 17l3-5m4 0l3-5m-3 5l3 5\"><\/path><\/svg>\n<h3>Redes Neurais<\/h3>\n<p>Arquiteturas profundas para reconhecimento, gera\u00e7\u00e3o e infer\u00eancia.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><path d=\"M2 12s3.5-6 10-6 10 6 10 6-3.5 6-10 6S2 12 2 12z\"><\/path><circle cx=\"12\" cy=\"12\" r=\"2.5\"><\/circle><\/svg>\n<h3>Vis\u00e3o Computacional<\/h3>\n<p>Percep\u00e7\u00e3o e an\u00e1lise autom\u00e1tica de imagens e v\u00eddeos.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><path d=\"M3 11l9-7 9 7v9a1 1 0 0 1-1 1H4a1 1 0 0 1-1-1z\"><\/path><path d=\"M9 21v-6h6v6\"><\/path><\/svg>\n<h3>Automa\u00e7\u00e3o e Smart Buildings<\/h3>\n<p>Ambientes inteligentes, efici\u00eancia energ\u00e9tica e sistemas embarcados.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><rect x=\"4\" y=\"8\" width=\"16\" height=\"11\" rx=\"2\"><\/rect><path d=\"M12 8V4M8 13h.01M16 13h.01M9 16h6\"><\/path><\/svg>\n<h3>Rob\u00f3tica Inteligente<\/h3>\n<p>Autonomia, navega\u00e7\u00e3o e controle em plataformas rob\u00f3ticas.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><path d=\"M3 8l9-4 9 4-9 4-9-4z\"><\/path><path d=\"M7 11v5c0 1.5 2.5 3 5 3s5-1.5 5-3v-5\"><\/path><\/svg>\n<h3>IA na Educa\u00e7\u00e3o<\/h3>\n<p>Tecnologias educacionais, tutoria inteligente e forma\u00e7\u00e3o docente.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><rect x=\"3\" y=\"3\" width=\"7\" height=\"7\"><\/rect><rect x=\"14\" y=\"3\" width=\"7\" height=\"7\"><\/rect><rect x=\"3\" y=\"14\" width=\"7\" height=\"7\"><\/rect><rect x=\"14\" y=\"14\" width=\"7\" height=\"7\"><\/rect><\/svg>\n<h3>IA Distribu\u00edda<\/h3>\n<p>Divis\u00e3o do processamento e das tarefas de um sistema inteligente entre v\u00e1rios dispositivos ou redes conectadas, em vez de usar apenas um computador.<\/p>\n<\/article>\n<article class=\"gaia-card\">\n<svg viewBox=\"0 0 24 24\"><path d=\"M12 3v18M5 8h14M7 8l-3 6a3 3 0 0 0 6 0zM17 8l-3 6a3 3 0 0 0 6 0z\"><\/path><\/svg>\n<h3>\u00c9tica na IA<\/h3>\n<p>Impactos sociais, transpar\u00eancia e uso respons\u00e1vel da tecnologia.<\/p>\n<\/article>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"gaia-section\" style=\"padding-bottom: 0;margin-bottom: 0;\">\n<div class=\"gaia-wrap\">\n<div class=\"gaia-section__head\">\n<div>\n<p class=\"gaia-eyebrow\">Publica\u00e7\u00f5es recentes<\/p>\n\n<h2 class=\"gaia-h2\">O que o grupo tem produzido<\/h2>\n<\/div>\n<a class=\"gaia-btn gaia-btn--ghost\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/category\/artigos\/\">Todas as publica\u00e7\u00f5es<\/a>\n\n<\/div>\n<\/div>\n<\/section><\/div>\n<\/div><\/div><div id=\"panel-5-0-0-1\" class=\"so-panel widget widget_siteorigin-panels-builder\" data-index=\"1\" ><div class=\"gaia-wrap panel-widget-style panel-widget-style-for-5-0-0-1\" ><div id=\"pl-w6a9c3b8a440d3\"  class=\"panel-layout\" ><div id=\"pg-w6a9c3b8a440d3-0\"  class=\"panel-grid panel-no-style\" ><div id=\"pgc-w6a9c3b8a440d3-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-w6a9c3b8a440d3-0-0-0\" class=\"so-panel widget widget_category-posts cat-post-widget panel-first-child panel-last-child\" data-index=\"0\" ><div class=\"gaia-posts panel-widget-style panel-widget-style-for-w6a9c3b8a440d3-0-0-0\" ><ul id=\"category-posts-1-internal\" class=\"category-posts-internal\">\n<li class=\"cat-post-item\"><div><article class=\"gaia-post\">\n<time><span class=\"cat-post-date\">27\/12\/2025<\/span><\/time>\n<h3><a class=\"cat-post-title\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/ieramiars1\/\" rel=\"bookmark\">Liver Tumor Segmentation in CT Scans Using Deep Learning: A U-Net Approach with Transfer Learning<\/a><\/h3>\n<p><p class=\"cpwp-excerpt-text\">Este trabalho apresenta um pipeline para segmenta\u00e7\u00e3o 2D de f\u00edgado e tumores a partir de tomografia computadorizada (NIfTI). Utilizamos o dataset p\u00fablico Liver Tumor Segmentation com 131 volumes, do qual foram extra\u00eddas fatias 2D e convertidas em imagens JPEG (com compress\u00e3o m\u00ednima, sem perda percept\u00edvel) para treinamento da U-Net com backbone ResNet50 (transfer learning) implementando a biblioteca FastAI. O pr\u00e9-processamento inclui leitura dos volumes com NiBabel, aplica\u00e7\u00e3o de janelas DICOM espec\u00edficas para f\u00edgado, normaliza\u00e7\u00e3o e redimensionamento para 128\u00d7128. Como fun\u00e7\u00e3o de perda foi adotada CrossEntropy (multiclasse) e m\u00e9tricas customizadas de acur\u00e1cia sobre os pixels de interesse (foreground). Leia o artigo completo: https:\/\/doi.org\/10.5753\/eramiars.2025.16788<\/p>\n<\/p>\n <a class=\"cat-post-excerpt-more\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/ieramiars1\/\">Leia mais<\/a>\n<\/article><\/div><\/li><li class=\"cat-post-item\"><div><article class=\"gaia-post\">\n<time><span class=\"cat-post-date\">23\/12\/2025<\/span><\/time>\n<h3><a class=\"cat-post-title\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/mensageria-descentralizada-como-infraestrutura-publica\/\" rel=\"bookmark\">Mensageria Descentralizada como Infraestrutura P\u00fablica: Uma Perspectiva sobre a Web3 como Bem Comum Digital<\/a><\/h3>\n<p><p class=\"cpwp-excerpt-text\">Digital messaging plays a central role in modern society, but it is currently dominated by centralized platforms that compromise user privacy and control. This position paper argues that decentralized messaging systems, based on open protocols and free software, can serve as public communication infrastructure and exemplify Web3 as a digital common good. We discuss the limitations of current services (identity lock-in, user fragmentation, data exposure) and present decentralized approaches (peer-to-peer, federated, blockchain-based) according to recent literature. We relate these models to the concept of public digital infrastructure, essential communication systems managed in a non-exclusive manner, and the notions of digital commons. As illustrative cases, we cite open protocols like Matrix and Web3 initiatives that adopt blockchain-based identity (e.g., XMTP), showing that such systems exhibit the characteristics of common resources: public specification, collective governance, and open-source software. Leia o artigo completo: https:\/\/doi.org\/10.5753\/webmedia_estendido.2025.16385<\/p>\n<\/p>\n <a class=\"cat-post-excerpt-more\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/mensageria-descentralizada-como-infraestrutura-publica\/\">Leia mais<\/a>\n<\/article><\/div><\/li><\/ul>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><div id=\"panel-5-0-0-2\" class=\"so-panel widget widget_block panel-last-child\" data-index=\"2\" ><br><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Sobre o GAIA Pesquisa em IA com rigor acad\u00eamico e responsabilidade social. O Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial da UFPel re\u00fane docentes, pesquisadores e estudantes em torno da investiga\u00e7\u00e3o te\u00f3rica e pr\u00e1tica de t\u00e9cnicas de IA. Atuamos no desenvolvimento de tecnologias inovadoras em parceria com a ind\u00fastria e com a comunidade, e mantemos um [&hellip;]<\/p>\n","protected":false},"author":138,"featured_media":309,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5","page","type-page","status-publish","has-post-thumbnail","hentry","post","post-with-thumbnail","post-with-thumbnail-large"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Apresenta\u00e7\u00e3o - Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial<\/title>\n<meta name=\"description\" content=\"O Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial (GAIA) da UFPel visa promover a investiga\u00e7\u00e3o cient\u00edfica te\u00f3rica e pr\u00e1tica sobre t\u00e9cnicas de IA e no emprego destas t\u00e9cnicas em tecnologias inovadoras.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/wp.ufpel.edu.br\/gaia\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GAIA UFPEL\" \/>\n<meta property=\"og:description\" content=\"O Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial (GAIA) da UFPel visa promover a investiga\u00e7\u00e3o cient\u00edfica te\u00f3rica e pr\u00e1tica sobre t\u00e9cnicas de IA e no emprego destas t\u00e9cnicas em tecnologias inovadoras.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/wp.ufpel.edu.br\/gaia\/\" \/>\n<meta property=\"og:site_name\" content=\"Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-05T15:55:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/wp.ufpel.edu.br\/gaia\/files\/2025\/11\/gaiaufpel_logo.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"200\" \/>\n\t<meta property=\"og:image:height\" content=\"200\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"GAIA UFPEL\" \/>\n<meta name=\"twitter:description\" content=\"O Grupo de Aplica\u00e7\u00f5es em Intelig\u00eancia Artificial (GAIA) da UFPel visa promover a investiga\u00e7\u00e3o cient\u00edfica te\u00f3rica e pr\u00e1tica sobre t\u00e9cnicas de IA e no emprego destas t\u00e9cnicas em tecnologias inovadoras.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/i0.wp.com\/wp.ufpel.edu.br\/gaia\/files\/2025\/11\/gaiaufpel_logo.jpeg?fit=200%2C200&ssl=1\" \/>\n<meta name=\"twitter:label1\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/wp.ufpel.edu.br\\\/gaia\\\/\",\"url\":\"https:\\\/\\\/wp.ufpel.edu.br\\\/gaia\\\/\",\"name\":\"Apresenta\u00e7\u00e3o - 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