Publicações

The role of a cognitive based model in multimodal interaction systems dialogue management

Researchers, in Multimodal Interaction Systems, devote substantial effort to the integration of external stimulus and signal, to the internal representation of this information and to the response generation. Nevertheless, they focus less effort on how to integrate studies in Cognitive Psychology regarding the human interaction subject. Therefore, it becomes interesting to evaluate the assumption that [...]

Using Computational Geometry to Improve Process Rescheduling on Round-Based Parallel Applications

Process rescheduling is a known technique to face with system heterogeneity and dynamism, being especially pertinent on Bulk Synchronous Parallel (BSP) programs. These programs are organized in a set of round-based supersteps, in which the slowest process determines the moment of synchronization. This approach motivated us to develop a first model called MigBSP, which combines [...]

Impact of Thresholds and Load Patterns when Executing HPC Applications with Cloud Elasticity

Elasticity is one of the most known capabilities related to cloud computing, being largely deployed reactively using thresholds. In this way, maximum and minimum limits are used to drive resource allocation and deallocation actions, leading to the following problem statements: How can cloud users set the threshold values to enable elasticity in their cloud applications? [...]

Exploiting Data-Parallelism on Multicore and SMT Systems for Implementing the Fractal Image Compressing Problem

This paper presents a parallel modeling of a lossy image compression method based on the fractal theory and its evaluation over two versions of dual-core processors: with and without simultaneous multithreading (SMT) support. The idea is to observe the speedup on both configurations when changing application parameters and the number of threads at operating system [...]

A model for learning objects adaptation in light of mobile and context-aware computing

The growth usage of mobile technologies and devices such as smartphones and tablets, and the almost ubiquitous wireless communication set the stage for the development of novel kinds of applications. One possibility is exploiting this scenario in the field of education, so creating more intelligent, flexible and customizable systems. Mobile devices can be used to [...]

Certografia: um corretor ortográfico automático para português e resultados de um estudo de caso aplicado na área jurídica

As ferramentas desenvolvidas com recursos de Processamento de Linguagem Natural apresentam crescentes possibilidades de apoiar trabalhos em diversas áreas. Uma das atividades em que este tipo de ferramenta pode ser bastante útil é a correção ortográfica. Entretanto ainda são escassos trabalhos desse tipo voltados à língua portuguesa. Neste trabalho, é apresentado o Certografia, um sistema [...]

Por |2019-03-18T08:25:15-03:00janeiro 1st, 2015|Publicações, Publicações, Sandro José Rigo|0 Comentários

REBASS: Um Modelo para Recomendação de Objetos de Aprendizagem Utilizando Similaridade de Sessões

Um Objeto de Aprendizagem (OA) é qualquer entidade ou recurso que possa ser utilizado no aprendizado auxiliado por computador. Podem ser textos, conteúdo multimídia, apresentações, programas ou qualquer outro tipo de conteúdo digital, normalmente disponibilizados em portais Web ou em sistemas de Ensino A Distância (EAD). Os OAs consultados por um aluno durante uma sessão [...]

Controle de Acesso Baseado na Inferência em Trilhas

Professionals are constantly seeking qualification and consequently increasing their knowledge in their area of expertise. Thus, it is interesting to develop a computer system that knows its users and their work history. Using this information, even in the case of professional role change, the system could allow the renewed authorization for activities, based on previously [...]

U-Deal: A Decentralized Trail-aware Model for Business Opportunities Identification

This article presents the U-Deal, a decentralized and multi-agent ubiquitous commerce model, that describes a peer-to-peer context aware system, with a distributed context history (trail) engine and a dynamic profile generator. The aim of the model is to provide an automatic deal opportunity recommendation based on user profile, preferences and activities history in a peer-to-peer [...]

M-Learning in Practice: Using SMS for Teaching and Learning in Undergraduate Courses

This article presents the results of an experience of SMS (Short Message Service) use to support teaching and learning in face to face undergraduate courses (Computer Sciences and Management) in a Brazilian university. The students' perceptions regarding the use of this technology were assessed via a questionnaire answered by the 143 students that participated of [...]

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