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    • Recuperação e classificação de sentimentos de usuários do twitter em período eleitoral 

      Matos, Fernanda Fernandes; Magalhães, Lúcia Helena de; Souza, Renato Rocha
      2020
      Introdução: A redes sociais tornaram-se um espaço importante para usuários expressarem seus sentimentos. Esses comentários são valiosos para governantes saberem o ponto de vista dos cidadãos sobre as suas propostas políticas ...
    • Representação de recursos multimídia na web: uso e reúso de padrões de anotação 

      Silva, Daniela Lucas da;; Souza, Renato Rocha
      2020
      O artigo retrata os desafios impostos ao cenário de produção, organização e disseminação de informação em diversos setores da sociedade em decorrência à evolução das tecnologias para tratamento de dados ...
    • Representação de documentos multimídia: dos metadados às anotações semânticas 

      Silva, Daniela Lucas da; Rocha, Renato Souza
      2014
      O artigo apresenta o resultado do estudo do estado da arte de iniciativas internacionais e nacionais que estão explorando o uso de ontologias e padrões de metadados para agregar conhecimento em anotações a fim de realizar ...
    • Extraction of keywords from texts: an exploratory study using noun phrases 

      Souza, Renato Rocha; Raghavan, K. S.
      2014
      The increasing use of Web for both scholarly publishing and information retrieval emphasizes the need for mechanisms to support efficient indexing and effective information retrieval. Manual indexing and knowledge ...
    • Specifying ubiquitous systems through the algebra of contextualized ontologies 

      Cafezeiro, Isabel; Viterbo, José; Rademaker, Alexandre; Haeusler, Edward Hermann; Endler, Markus
      2014
      In this paper we present the algebra of contextualized ontologies and an approach to specify context-aware systems. The algebra is designed to support context moddeling and aims at the specification of modular and scalable ...
    • Infimum gaps for limit solutions 

      Soledad Aronna, Maria; Motta, Monica; Rampazzo, Franco
      2015
      After recalling the notion of L1 limit solution for a dynamics which is affine in the (unbounded) derivative of the control, we focus on the possible occurrence of the Lavrentiev phenomenon for a related optimal control ...
    • Usabilidade da Biblioteca Virtual em Saúde: avaliando a eficácia, eficiência e satisfação 

      Lima, Izabel França de; Souza, Renato Rocha; Dias, Guilherme Ataíde
      2015
      Aborda aspectos relativos à avaliação de bibliotecas digitais, consideradas como dispositivos informacionais que podem auxiliar na democratização da informação mediada pelas tecnologias digitais. Tais bibliotecas podem ser ...
    • As wordnets do português 

      Oliveira, Hugo Gonçalo; Paiva, Valeria de; Freitas, Cláudia; Rademaker, Alexandre; Real, Livy; Simões, Alberto
      2015-04
      Not many years ago it was usual to comment on the lack of an open lexicalsemantic knowledge base, following the lines of Princeton WordNet, but for Portuguese. Today, the landscape has changed significantly, and researchers ...
    • Epidemiological data accessibility in Brazil 

      Coelho, Flávio Codeço; Codeço, Claudia Torres; Cruz, Oswaldo Gonçalves; Camargo, Sabrina; Bliman, Pierre-Alexandre
      2016-05
    • A note on systems with ordinary and impulsive controls 

      Aronna, Maria Soledad; Rampazzo, Franco
      2016
      We investigate an everywhere defined notion of solution for control systems whose dynamics depend non-linearly on the control u and state x, and are affine in the time derivative u˙. For this reason, the input u, which is ...
    • State of the art on functional fabrication 

      Sá, Asla Medeiros; Echavarria, Karina Rodriguez; Pietroni, Nico; Cignoni, Paolo
      2016
      Digital fabrication technologies are becoming of importance to a number of knowledge areas and sectors, including medicine, entertainment, design, engineering, education, arts and architecture, due to their accessibility ...
    • Full Bayesian analysis of claims reserving uncertainty 

      Peters, Gareth W.; Targino, Rodrigo dos Santos; Wüthrich, Mario V.
      2017-01-05
      We revisit the gamma–gamma Bayesian chain-ladder (BCL) model for claims reserving in non-life insurance. This claims reserving model is usually used in an empirical Bayesian way using plug-in estimates for the variance ...
    • Interatividade e usabilidade nas bibliotecas digitais no processo ensino-aprendizagem 

      Lima, Izabel França de; Souza, Renato Rocha; Dias, Guilherme Ataíde
      2012
      Este estudo de revisão de literatura sobre interatividade e usabilidade nas bibliotecas digitais objetiva apresentá-las como ferramentas que podem auxiliar na construção do conhecimento numa concepção de educação mediada ...
    • Convergence rate of strong local linearization schemes for stochastic differential equations with additive noise 

      Cruz Cancino, Hugo Alexander de la; Jimenez, Juan Carlos
      2011-09-23
      There is a variety of strong Local Linearization (LL) schemes for the numerical integration of stochastic differential equations with additive noise, which differ with respect to the algorithm that is used in the numerical ...
    • Optimal exercise strategies for operational risk insurance via multiple stopping times 

      Targino, Rodrigo dos Santos; Peters, Gareth W.; Sofronov, Georgy; Shevchenko, Pavel V.
      2016-04-12
      In this paper we demonstrate how to develop analytic closed form solutions to optimal multiple stopping time problems arising in the setting in which the value function acts on a compound process that is modified by the ...
    • A cooperative conjugate gradient method for linear systems permitting efficient multi-thread implementation 

      Bhaya, Amit; Bliman, Pierre-Alexandre; Niedu, Guilherme; Pazos, Fernando
      2018
      This paper revisits, in a multi-thread context, the so-called multi-parameter or block conjugate gradient (B-CG)methods, first proposed as sequential algorithms by O’Leary and Brezinski, for the solution of the linear ...
    • Establishing traveling wave in bistable reaction-diffusion system by feedback 

      Bliman, Pierre-Alexandre; Vauchelet, Nicolas
      2018-11-08
      Several stains of the intracellular parasitic bacterium Wolbachia limit severely the competence of the mosquitoes Aedes aegypti as a vector of dengue fever and possibly other arboviroses. For this reason, the release of ...
    • Investigating the blood-host plasticity and dispersal of Anopheles coluzzii using a novel field-based methodology 

      Orsborne, James; Furuya-Kanamori, Luis; Jeffries, Claire L.; Kristan, Mojca; Mohammed, Abdul Rahim; Afrane, Yaw A.; O’Reilly, Kathleen; Massad, Eduardo; Drakeley, Chris; Walker, Thomas; Yakob, Laith
      2019
      Background: The biting behaviour and dispersal of insect vectors in the field underlies the transmission of many diseases. Here, a novel collection methodology coupled with the molecular analysis of blood-meal sources and ...