{"id":527,"date":"2016-07-17T18:43:15","date_gmt":"2016-07-17T21:43:15","guid":{"rendered":"https:\/\/sbia.org.br\/lnlm\/?page_id=527"},"modified":"2016-07-17T18:43:15","modified_gmt":"2016-07-17T21:43:15","slug":"vol9-no2-art2","status":"publish","type":"page","link":"https:\/\/sbia.org.br\/lnlm\/publicacoes\/vol9-no2\/vol9-no2-art2\/","title":{"rendered":"Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o"},"content":{"rendered":"<p><strong>T\u00edtulo:<\/strong> Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o<\/p>\n<p><strong>Autores:<\/strong> Costa, Jos\u00e9 Alfredo F.; Gon\u00e7alves, M\u00e1rcio L.; Andrade Netto, M\u00e1rcio L. de<\/p>\n<p align=\"justify\"><strong>Resumo:<\/strong> Mapas auto-organiz\u00e1veis (SOM) t\u00eam sido amplamente utilizados em agrupamento (quantiza\u00e7\u00e3o) e visualiza\u00e7\u00e3o de dados multivariados, uma importante propriedade que n\u00e3o existe na maioria dos algoritmos de agrupamentos. Por\u00e9m, an\u00e1lise de aglomerados efetiva utilizando o SOM envolve duas ou tr\u00eas etapas do processamento. Ap\u00f3s o treinamento, neur\u00f4nios s\u00e3o agrupados gerando regi\u00f5es no mapa que est\u00e3o relacionados aos aglomerados do conjunto de dados. O pressuposto b\u00e1sico depende da aproxima\u00e7\u00e3o da densidade de dados, obtida atrav\u00e9s de aprendizagem n\u00e3o supervisionada. A transforma\u00e7\u00e3o de dados em imagens, sua visualiza\u00e7\u00e3o e an\u00e1lise autom\u00e1tica de agrupamentos s\u00e3o abordadas neste artigo. O m\u00e9todo proposto segmenta o mapa atrav\u00e9s da transformada watershed, ap\u00f3s modifica\u00e7\u00e3o da homotopia da imagem, e utilizando \u00edndices de valida\u00e7\u00e3o de agrupamentos. Os resultados s\u00e3o mostrados para conjuntos de dados para mapas com diferentes tamanhos.<\/p>\n<p><strong>Palavras-chave:<\/strong> Mapas auto-organiz\u00e1veis; visualiza\u00e7\u00e3o; agrupamento de dados; os \u00edndices de valida\u00e7\u00e3o; redes neurais; reconhecimento de padr\u00f5es<\/p>\n<p><strong>P\u00e1ginas:<\/strong> 13<\/p>\n<p><strong>C\u00f3digo DOI:<\/strong> <a href=\"http:\/\/dx.doi.org\/10.21528\/lnlm-vol9-no2-art2\">10.21528\/lmln-vol9-no2-art2<\/a><\/p>\n<p><strong>Artigo em PDF:<\/strong> <a href=\"https:\/\/sbia.org.br\/lnlm\/wp-content\/uploads\/sites\/4\/2016\/07\/vol9-no2-art2.pdf\" rel=\"\">vol9-no2-art2.pdf<\/a><\/p>\n<p><strong>Arquivo BibTex:<\/strong> <a href=\"https:\/\/sbia.org.br\/lnlm\/wp-content\/uploads\/sites\/4\/2016\/07\/vol9-no2-art2.bib\" rel=\"\">vol9-no2-art2.bib<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>T\u00edtulo: Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o Autores: Costa, Jos\u00e9 Alfredo F.; Gon\u00e7alves, M\u00e1rcio L.; Andrade Netto, M\u00e1rcio L. de Resumo: Mapas auto-organiz\u00e1veis (SOM) t\u00eam sido amplamente utilizados em agrupamento (quantiza\u00e7\u00e3o) <a href=\"https:\/\/sbia.org.br\/lnlm\/publicacoes\/vol9-no2\/vol9-no2-art2\/\" class=\"read-more\">Read More &#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":523,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-527","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o - Learning and NonLinear Models<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sbia.org.br\/lnlm\/publicacoes\/vol9-no2\/vol9-no2-art2\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o - Learning and NonLinear Models\" \/>\n<meta property=\"og:description\" content=\"T\u00edtulo: Visualiza\u00e7\u00e3o e An\u00e1lise de Agrupamentos Usando Redes Auto-Organiz\u00e1veis, Segmenta\u00e7\u00e3o de Imagens e \u00cdndices de Valida\u00e7\u00e3o Autores: Costa, Jos\u00e9 Alfredo F.; 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