5 research outputs found

    Modelação de diálogos com o Midiki: um gestor de diálogo do tipo Information State Update

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    Nesta dissertação investigamos a problemática da criação de sistemas e interfaces que permitam a interacção entre pessoas e máquinas através de linguagem natural(LN), recorrendo a Gestores de Diálogo (GD). Esse tipo de interacção concretiza-se através do estabelecimento de diálogos entre uma pessoa (cliente ou utilizador de um serviço) e a máquina, por exemplo, e em particular, através da fala. Quando disponibilizado da forma tradicional, o acesso ao serviço exige um intermediário Humano ou a adaptação da Pessoa a interfaces menos naturais, tais como linhas de comandos num computador, digitadas através de teclado ou o recurso (usual) a janelas, cliques de rato e preenchimento de formulários. Os sistemas que possibilitam a intermediação com esses serviços através de LN chamam-se Sistemas de Diálogo (SD), no núcleo dos quais se encontram os chamados Gestores de Diálogo. A implementação de SDs robustos ainda constitui um desafio, dada a complexidade, problemas e dificuldades que apresenta. Um SD, e em particular um GD, tem de ser configurado para levar a cabo um diálogo em linguagem natural com um Humano, por mais restrito ou mais genérico que seja o domínio (ou tarefa) considerado. Infelizmente, existem poucas metodologias e ferramentas de autoria que possibilitem a modelação fácil e intuitiva de tais diálogos (sobre os GDs). Nesta dissertação apresentamos uma metodologia [Quintal & Sampaio, 2007] e uma ferramenta para a autoria de diálogos com base no Gestor de Diálogo MIDIKI [Burke, 2005b]. A ferramenta de autoria automatiza as partes mais importantes da geração de código com vista à execução de um diálogo nesse GD.Orientador: Paulo N.M. Sampai

    Spoken dialogue systems: architectures and applications

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    171 p.Technology and technological devices have become habitual and omnipresent. Humans need to learn tocommunicate with all kind of devices. Until recently humans needed to learn how the devices expressthemselves to communicate with them. But in recent times the tendency has become to makecommunication with these devices in more intuitive ways. The ideal way to communicate with deviceswould be the natural way of communication between humans, the speech. Humans have long beeninvestigating and designing systems that use this type of communication, giving rise to the so-calledSpoken Dialogue Systems.In this context, the primary goal of the thesis is to show how these systems can be implemented.Additionally, the thesis serves as a review of the state-of-the-art regarding architectures and toolkits.Finally, the thesis is intended to serve future system developers as a guide for their construction. For that

    Proceedings of the ACM SIGIR Workshop ''Searching Spontaneous Conversational Speech''

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    Food for Talk: Addressing barriers to communicating agricultural knowledge to subsistence farmers in Timor-Leste.

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    The International Fund for Agricultural Development has identified barriers to the sharing of knowledge with small farm holders as one of the key obstacles to increased food production in developing countries. The purpose of this research was to examine ways in which these barriers could be overcome in respect of subsistence farmers in Timor-Leste, a significant proportion of whom have low levels of literacy and poor access to conventional mass media channels. The first part of this research was concerned with how communication is best positioned in development projects. The researcher was contracted to draft a communication strategy for the agricultural project Seeds of Life, and to conduct communication training workshops for the project's staff. Neither the strategy nor the workshops were found to change thinking about communication within the project from what is known as the deficit model, which places a premium on communication outputs, to one more attuned to communication impacts. Despite the strategy and the workshops communication staff also continued to be viewed as mere service providers taking instruction from researchers and technical advisers rather than professionals in their own right with particular skills to bring to the challenge of sharing knowledge in the most appropriate ways. A longitudinal study was then undertaken of the interactions between these two groups within Seeds of Life. This consisted of interviews with staff members over a period of four years. This study found that communication staff on the one hand, and research scientists and technical advisers on the other, eventually achieved a more effective working relationship through processes designed to improve their cross-disciplinary communication. The study provides evidence in support of a model of project planning which focuses on how natural science and social science practitioners work together to produce fit-for-purpose communication initiatives rather than models that seek to determine communication approaches and techniques in advance. The research then trialed two ways of communicating with farmers across the language, literacy and educational spectrum in Timor-Leste. The first of these was participatory theatre; the second video animation capable of being shown on laptops, iPads and mobile devices. Both employed forms of entertainment-education to engage audiences with the informational content and both used illustration as the technique for sharing knowledge. These trials demonstrated considerable potential for both techniques to overcome barriers to agricultural science knowledge sharing in Timor-Leste and in similar challenging communication contexts
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