{"id":7663,"date":"2023-11-23T12:27:11","date_gmt":"2023-11-23T12:27:11","guid":{"rendered":"https:\/\/dailyai.com\/?p=7663"},"modified":"2023-11-23T12:40:43","modified_gmt":"2023-11-23T12:40:43","slug":"is-openai-sitting-on-a-dangerous-ai-model-that-led-to-altmans-firing","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2023\/11\/is-openai-sitting-on-a-dangerous-ai-model-that-led-to-altmans-firing\/","title":{"rendered":"Estar\u00e1 a OpenAI a utilizar um modelo de IA perigoso que levou ao despedimento de Altman?"},"content":{"rendered":"<p><strong>Mais um dia, mais uma reviravolta na saga OpenAI-Altman.\u00a0<\/strong><\/p>\n<p>Desta vez, a raz\u00e3o para o despedimento de Altman \u00e9 um modelo de IA apocalipticamente poderoso que se encontra num laborat\u00f3rio de investiga\u00e7\u00e3o da OpenAI, ou pelo menos \u00e9 o que sugerem os meios de comunica\u00e7\u00e3o social.<\/p>\n<p>Poucos dias antes da estreia de Sam Altman no <a href=\"https:\/\/dailyai.com\/pt\/2023\/11\/openai-come-to-an-agreement-in-principle-for-sam-altman-to-return-as-ceo\/\">sa\u00edda tempor\u00e1ria<\/a> da OpenAI, fontes entrevistadas pela Reuters alegam que os investigadores da empresa enviaram uma carta de aviso ao conselho de administra\u00e7\u00e3o.<\/p>\n<p><span style=\"font-weight: 400;\">Esta carta, que n\u00e3o foi divulgada publicamente at\u00e9 h\u00e1 pouco tempo, fez soar o alarme sobre um avan\u00e7o da IA. De acordo com dois informadores que <\/span><a href=\"https:\/\/www.reuters.com\/technology\/sam-altmans-ouster-openai-was-precipitated-by-letter-board-about-ai-breakthrough-2023-11-22\/\"><span style=\"font-weight: 400;\">contactado pela Reuters<\/span><\/a><span style=\"font-weight: 400;\">\u00e9 suficientemente potente para amea\u00e7ar a humanidade.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Fontes alegam que a modelo em quest\u00e3o pode ter sido fundamental nos acontecimentos que levaram ao despedimento de Altman.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O projeto em quest\u00e3o \u00e9 conhecido como Q* (pronuncia-se Q-Star). O Q* \u00e9 visto por alguns membros da OpenAI como um potencial marco na procura de <a href=\"https:\/\/dailyai.com\/pt\/2023\/11\/sam-altman-and-greg-brockman-join-microsoft-in-new-chapter-for-agi\/\">intelig\u00eancia geral artificial (AGI)<\/a>. O Q* \u00e9 uma am\u00e1lgama de abordagens de aprendizagem autom\u00e1tica, incluindo o Q-learning, que remonta \u00e0 d\u00e9cada de 1980.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Embora os meios de comunica\u00e7\u00e3o social adorem uma hist\u00f3ria apocal\u00edptica sobre a IA, estas fontes an\u00f3nimas indicaram que a decis\u00e3o do conselho de administra\u00e7\u00e3o de despedir Altman foi influenciada por preocupa\u00e7\u00f5es sobre a comercializa\u00e7\u00e3o prematura de Q* sem compreender totalmente as suas implica\u00e7\u00f5es.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">No entanto, a Reuters n\u00e3o conseguiu confirmar de forma independente as alegadas capacidades do Q*, tal como descritas pelos investigadores.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Al\u00e9m disso, a Reuters n\u00e3o teve acesso \u00e0 carta e os funcion\u00e1rios respons\u00e1veis pela sua reda\u00e7\u00e3o n\u00e3o responderam \u00e0s perguntas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00e3o nos deixa muito com que trabalhar. \u00c9 preciso pensar que o facto de quase todos os funcion\u00e1rios da OpenAI terem pedido o regresso de Altman torna improv\u00e1vel que haja apenas dois que estejam preocupados com Q*.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Na sequ\u00eancia da rejei\u00e7\u00e3o dos receios de Altman em rela\u00e7\u00e3o \u00e0 Q*, o conselho de administra\u00e7\u00e3o decidiu demitir Altman - ou, pelo menos, \u00e9 isso que esta carta e as not\u00edcias associadas alegam.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mas ser\u00e1 que isto tem alguma subst\u00e2ncia? Ou ser\u00e1 apenas mais uma estranha e especulativa reviravolta no drama da dire\u00e7\u00e3o da OpenAI?<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">O que \u00e9 Q* e como funciona?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Embora especulativo, o Q* (Q-Star) poderia combinar elementos dos algoritmos de pesquisa Q-learning e A* (A Star) optimizados atrav\u00e9s de um processo denominado Aprendizagem por Refor\u00e7o a partir de Feedback Humano (RLHF).\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00e3o \u00e9 totalmente \u00fanico, e j\u00e1 anteriormente se especulou sobre t\u00e9cnicas relacionadas com o Q*. Estes podem dar-nos algumas pistas sobre o seu funcionamento.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vamos decompor cada componente para compreender como podem interagir em Q*:<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Q-learning em Q<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">O Q-learning \u00e9 um tipo de algoritmo de aprendizagem por refor\u00e7o que existe h\u00e1 cerca de 30 anos. Foi concebido para ajudar um agente a aprender as melhores ac\u00e7\u00f5es a tomar num determinado estado para maximizar uma recompensa. Isto \u00e9 feito atrav\u00e9s da aprendizagem de uma fun\u00e7\u00e3o de valor conhecida como fun\u00e7\u00e3o Q, que estima a utiliza\u00e7\u00e3o esperada de uma determinada a\u00e7\u00e3o num determinado estado.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">No contexto de modelos de IA generativa como os que a OpenAI desenvolve, o Q-learning pode determinar a sequ\u00eancia \u00f3ptima de palavras ou respostas numa conversa ou numa tarefa de resolu\u00e7\u00e3o de problemas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cada palavra ou resposta pode ser vista como uma a\u00e7\u00e3o, e os estados podem ser o contexto ou a sequ\u00eancia de palavras j\u00e1 geradas.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Um algoritmo de pesquisa em Q<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">O A* \u00e9 um algoritmo popular de pesquisa em grafos conhecido pela sua efici\u00eancia e efic\u00e1cia na procura do caminho mais curto de um n\u00f3 inicial para um n\u00f3 de destino num grafo.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A men\u00e7\u00e3o ao facto de Q* necessitar de \"vastos recursos inform\u00e1ticos\" e ser capaz de resolver problemas matem\u00e1ticos sugere que A* poderia ser integrado com Q-learning para lidar com processos de racioc\u00ednio complexos e com v\u00e1rias etapas.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O algoritmo pode otimizar a tomada de decis\u00f5es em v\u00e1rias etapas, armazenando resultados interm\u00e9dios e pesquisando eficazmente poss\u00edveis sequ\u00eancias de ac\u00e7\u00f5es (ou palavras\/respostas).<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Papel da RLHF<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">A RLHF envolve a forma\u00e7\u00e3o de modelos de IA utilizando feedback humano para orientar o processo de aprendizagem. Isto pode incluir a demonstra\u00e7\u00e3o dos resultados desejados, a corre\u00e7\u00e3o de erros e o fornecimento de feedback diferenciado para aperfei\u00e7oar a compreens\u00e3o e o desempenho do modelo.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Em Q*, o RLHF pode ser utilizado para aperfei\u00e7oar a capacidade do modelo para tomar decis\u00f5es e resolver problemas, especialmente em cen\u00e1rios complexos, com v\u00e1rias voltas, em que a compreens\u00e3o e o racioc\u00ednio diferenciados s\u00e3o fundamentais.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c9 assim que Q* pode funcionar, mas n\u00e3o nos diz realmente como ou porque \u00e9 t\u00e3o alarmante, nem oferece qualquer clareza sobre a verdade das afirma\u00e7\u00f5es da carta. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">S\u00f3 o tempo dir\u00e1 se a Q* \u00e9 genu\u00edna e se representa algum risco.\u00a0<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Mais um dia, mais uma reviravolta na saga OpenAI-Altman.  Desta vez, a raz\u00e3o para o despedimento de Altman \u00e9 um modelo de IA apocalipticamente poderoso que se encontra num laborat\u00f3rio de investiga\u00e7\u00e3o da OpenAI, ou pelo menos \u00e9 o que sugerem fontes da comunica\u00e7\u00e3o social. Poucos dias antes da sa\u00edda tempor\u00e1ria de Sam Altman da OpenAI, fontes entrevistadas pela Reuters alegam que os investigadores da empresa enviaram uma carta de aviso ao conselho de administra\u00e7\u00e3o. Esta carta, que n\u00e3o foi divulgada publicamente at\u00e9 h\u00e1 pouco tempo, alertava para a possibilidade de um avan\u00e7o da IA. De acordo com duas pessoas que contactaram a Reuters, \u00e9 suficientemente potente para amea\u00e7ar a humanidade. As fontes alegam que o modelo em quest\u00e3o pode ter sido fundamental para a<\/p>","protected":false},"author":2,"featured_media":2351,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[115,93,136],"class_list":["post-7663","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-chatgpt","tag-openai","tag-sam-altman"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Is OpenAI sitting on a dangerous AI model that led to Altman&#039;s firing? | DailyAI<\/title>\n<meta name=\"description\" content=\"Just days before Sam Altman&#039;s temporary departure from OpenAI, sources interviewed by Reuters allege the company&#039;s researchers sent a warning letter to the board of directors.\" \/>\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\/2023\/11\/is-openai-sitting-on-a-dangerous-ai-model-that-led-to-altmans-firing\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Is OpenAI sitting on a dangerous AI model that led to Altman&#039;s firing? 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