{"id":10463,"date":"2024-03-03T13:13:38","date_gmt":"2024-03-03T13:13:38","guid":{"rendered":"https:\/\/dailyai.com\/?p=10463"},"modified":"2024-03-04T11:18:19","modified_gmt":"2024-03-04T11:18:19","slug":"researchers-use-machine-learning-to-copy-and-replicate-fragrances","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/03\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\/","title":{"rendered":"Os investigadores utilizam a aprendizagem autom\u00e1tica para copiar e replicar fragr\u00e2ncias"},"content":{"rendered":"<p><b>A IA est\u00e1 a mudar a forma como pensamos sobre a preserva\u00e7\u00e3o de aromas, potencialmente salvando fragr\u00e2ncias raras que est\u00e3o \u00e0 beira do desaparecimento.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Idelfonso Nogueira e a sua equipa da Universidade Norueguesa de Ci\u00eancia e Tecnologia demonstraram que a IA pode criar f\u00f3rmulas para recriar perfumes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O <a href=\"https:\/\/arxiv.org\/ftp\/arxiv\/papers\/2402\/2402.12134.pdf\" target=\"_blank\" rel=\"noopener\">estudo<\/a> envolve a defini\u00e7\u00e3o do perfil das fragr\u00e2ncias pela sua \"fam\u00edlia olfactiva\" - termos descritivos como \"picante\" ou \"almiscarado\" - e pelo seu \"valor odor\u00edfero\", que mede a intensidade de um cheiro.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por exemplo, eles encontraram uma fragr\u00e2ncia com um alto valor de odor para \"cumar\u00ednico\" (reminiscente de baunilha) e outra que era notavelmente \"alco\u00f3lica\".\u00a0<\/span><\/p>\n<p>Os investigadores tencionam utilizar este processo para<span style=\"font-weight: 400;\"> preservar odores obscuros e raros - como os obtidos em ambientes naturais em mudan\u00e7a ou em plantas \u00e0 beira da extin\u00e7\u00e3o - replicando-os a partir de uma \u00fanica amostra.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Poder\u00e1 tamb\u00e9m permitir um processo eficiente e replic\u00e1vel para a cria\u00e7\u00e3o de perfumes, uma tarefa que normalmente requer tentativas e erros consider\u00e1veis.\u00a0<\/span><\/p>\n<h2>Reparti\u00e7\u00e3o da metodologia<\/h2>\n<p><span style=\"font-weight: 400;\">O primeiro passo consiste em analisar as fragr\u00e2ncias alvo para compreender os seus perfis olfactivos, incluindo as suas fam\u00edlias olfactivas (como \"picante\" ou \"almiscarado\") e a sua intensidade.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depois, utilizando uma GGNN (Gated Graph Neural Network) treinada numa vasta base de dados de mol\u00e9culas, a equipa gera novas mol\u00e9culas que podem potencialmente replicar a fragr\u00e2ncia alvo.\u00a0<\/span><\/p>\n<figure id=\"attachment_10464\" aria-describedby=\"caption-attachment-10464\" style=\"width: 750px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10464\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent.png\" alt=\"Aroma de IA\" width=\"750\" height=\"648\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent.png 945w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-300x259.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-768x664.png 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-370x320.png 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-800x692.png 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-20x17.png 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-740x640.png 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/methodscent-56x48.png 56w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><figcaption id=\"caption-attachment-10464\" class=\"wp-caption-text\">A metodologia do estudo. Fonte: Via <a href=\"https:\/\/arxiv.org\/ftp\/arxiv\/papers\/2402\/2402.12134.pdf\">ArXiv<\/a><\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Este processo envolve duas fases: treinar o GGNN com mol\u00e9culas conhecidas para aprender a rela\u00e7\u00e3o entre as estruturas moleculares e os seus aromas e, em seguida, gerar novas mol\u00e9culas que correspondam ao perfil de aroma desejado atrav\u00e9s da aprendizagem por transfer\u00eancia.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nogueira explica que a perce\u00e7\u00e3o do cheiro muda devido \u00e0s interac\u00e7\u00f5es f\u00edsicas e qu\u00edmicas que as mol\u00e9culas sofrem com o ar ou com a pele.\u00a0<\/span><span style=\"font-weight: 400;\">Para reproduzir os aromas originais com precis\u00e3o, seleccionaram mol\u00e9culas geradas por IA que se evaporavam de forma semelhante \u00e0s das fragr\u00e2ncias originais, enfrentando o desafio de captar a natureza ef\u00e9mera das \"notas de topo\" e a longevidade das \"notas de base\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depois de gerar uma gama de mol\u00e9culas, a equipa selecciona as que melhor correspondem ao perfil olfativo da fragr\u00e2ncia alvo com base na sua press\u00e3o de vapor e notas de fragr\u00e2ncia.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A fase final envolve a otimiza\u00e7\u00e3o da formula\u00e7\u00e3o do perfume para corresponder ao aroma original. Este processo considera a intensidade das diferentes fam\u00edlias de aromas na fragr\u00e2ncia e ajusta a composi\u00e7\u00e3o molecular da fragr\u00e2ncia em conformidade.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Uma das fragr\u00e2ncias produzidas com este m\u00e9todo reproduzia fielmente o original, com pequenos desvios nas suas notas \"cumar\u00ednicas\" e \"agudas\". A outra era quase uma correspond\u00eancia exacta.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Os autores sugerem que a expans\u00e3o da base de dados para incluir mol\u00e9culas mais complexas poderia aumentar a precis\u00e3o destas fragr\u00e2ncias geradas por IA, oferecendo uma solu\u00e7\u00e3o mais barata e mais sustent\u00e1vel para a ind\u00fastria de perfumes, que atualmente enfrenta custos elevados e longos per\u00edodos de desenvolvimento.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nogueira est\u00e1 pronto para testar a tecnologia ainda mais, experimentando algumas das fragr\u00e2ncias geradas pela IA em primeira m\u00e3o no laborat\u00f3rio de um colega em Ljubljana, Eslov\u00e9nia. <\/span><span style=\"font-weight: 400;\">\"Estou muito entusiasmado por os cheirar\", afirma.<\/span><\/p>\n<p>A IA tem in\u00fameras utiliza\u00e7\u00f5es inovadoras em aplica\u00e7\u00f5es menos suspeitas, como quando os investigadores utilizaram redes neuronais para localizar geograficamente <a href=\"https:\/\/dailyai.com\/pt\/2023\/12\/machine-learning-deciphers-bordeaux-wine-origins-with-incredible-accuracy\/\">perfis de sabor \u00fanicos do vinho<\/a> para iluminar a base qu\u00edmica do terroir.<\/p>","protected":false},"excerpt":{"rendered":"<p>A IA est\u00e1 a mudar a forma como pensamos sobre a preserva\u00e7\u00e3o de aromas, potencialmente salvando fragr\u00e2ncias raras que est\u00e3o \u00e0 beira do desaparecimento.  Idelfonso Nogueira e a sua equipa da Universidade Norueguesa de Ci\u00eancia e Tecnologia demonstraram que a IA pode criar f\u00f3rmulas para recriar perfumes. O estudo envolve a defini\u00e7\u00e3o do perfil das fragr\u00e2ncias pela sua \"fam\u00edlia olfactiva\" - termos descritivos como \"picante\" ou \"almiscarado\" - e pelo seu \"valor odor\u00edfero\", que mede a intensidade de um cheiro.  Por exemplo, encontraram uma fragr\u00e2ncia com um valor de odor elevado para \"cumar\u00ednico\" (que faz lembrar a baunilha) e outra que era notavelmente \"alco\u00f3lica\".  Os investigadores tencionam utilizar este processo para preservar<\/p>","protected":false},"author":2,"featured_media":10465,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[105],"class_list":["post-10463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-machine-learning"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Researchers use machine learning to copy and replicate fragrances | DailyAI<\/title>\n<meta name=\"description\" content=\"AI is changing how we think about preserving scents, potentially rescuing rare fragrances that are on the brink of disappearing.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/pt\/2024\/03\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers use machine learning to copy and replicate fragrances | DailyAI\" \/>\n<meta property=\"og:description\" content=\"AI is changing how we think about preserving scents, potentially rescuing rare fragrances that are on the brink of disappearing.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/pt\/2024\/03\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-03T13:13:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-04T11:18:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/03\/shutterstock_677981779.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"658\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:site\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/03\\\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/03\\\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\\\/\"},\"author\":{\"name\":\"Sam Jeans\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/#\\\/schema\\\/person\\\/711e81f945549438e8bbc579efdeb3c9\"},\"headline\":\"Researchers use machine learning to copy and replicate fragrances\",\"datePublished\":\"2024-03-03T13:13:38+00:00\",\"dateModified\":\"2024-03-04T11:18:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/03\\\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\\\/\"},\"wordCount\":501,\"publisher\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/03\\\/researchers-use-machine-learning-to-copy-and-replicate-fragrances\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dailyai.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/shutterstock_677981779.jpg\",\"keywords\":[\"machine learning\"],\"articleSection\":[\"Ethics &amp; 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