Alexandro Baldassin

Dr. Alexandro Baldassin

orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 March 2018 in Sensors
Verified
Journal Article
Open access
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LMLuis Fernando Castilho Maschi
Luis Fernando Castilho Maschi
APAlex Sandro Roschildt Pinto
Alex Sandro Roschildt Pinto
Rodolfo I. MeneguetteRodolfo I. Meneguette
Rodolfo I. Meneguette
ABAlexandro Baldassin
Alexandro Baldassin
With the advent of the Internet of Things, billions of objects or devices are inserted into the global computer network, generating and processing data at a volume never imagined before. This paper proposes a way to collect and process local data through a data fusion technology called summarization. The main feature of the proposal is the local data fusion, through parameters provided by the application, ensuring the quality of data collected by the sensor node. In the evaluation, the sensor node was compared when performing the data summary with another that performed a continuous recording of the collected data. Two sets of nodes were created, one with a sensor node that analyzed the luminosity of the room, which in this case obtained a reduction of 97% in the volume of data generated, and another set that analyzed the temperature of the room, obtaining a reduction of 80% in the data volume. Through these tests, it has been proven that the local data fusion at the node can be used to reduce the volume of data generated, consequently decreasing the volume of messages generated by IoT environments.

1 May 2019 in Neurocomputing
Verified
Journal Article
Closed access
DPDaniel Carlos Guimarães Pedronette
Daniel Carlos Guimarães Pedronette
YWYing Weng
Ying Weng
ABAlexandro Baldassin
Alexandro Baldassin
CHChaohuan Hou
Chaohuan Hou

6 July 2012 in International Journal of Parallel Programming
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Journal Article
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DNDaniel Nicácio
Daniel Nicácio
ABAlexandro Baldassin
Alexandro Baldassin
GAGuido Araújo
Guido Araújo

31 July 2018 in IEEE Transactions on Parallel and Distributed Systems
Verified
Journal Article
Closed access
JCJoao P. L. de Carvalho
Joao P. L. de Carvalho
GAGuido Araujo
Guido Araujo
ABAlexandro Baldassin
Alexandro Baldassin
In recent years, Hybrid TM (HyTM) has been proposed as a transactional memory approach that leverages on the advantages of both hardware (HTM) and software (STM) execution modes. HyTM assumes that concurrent transactions have very different phases and thus should run under different execution modes. Conversely, Phased Transactional Memory (PhTM) considers that concurrent transactions have similar phases, and thus all transactions could run under the same mode. In this paper we make the case for phase-based transactional systems using PhTM*, the first implementation of PhTM on modern HTM-ready processors. PhTM* novelty relies on avoiding unnecessary transitions to software mode. Experimental results using Broadwell's TSX reveal that, for the STAMP benchmark suite, PhTM* performs on average 1.68x better than PhTM, a previous phase-based TM, 2.08x better than HyTM-NOrec, a state-of-the-art HyTM, and 2.28x better than HyCO, the most recent hybrid system in the literature. We also show that STAMP applications do not exhibit hybrid behavior to justify the use of conventional hybrid systems, thus making PhTM* a better solution to those type of programs. Finally, we show for the first time that conventional hybrid systems do not perform better than phased-based system in a scenario with hybrid-behaved transactions.

29 May 2023
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Conference Paper
Open access
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DCDaniel Cordeiro
Daniel Cordeiro
EFEmilio Francesquini
Emilio Francesquini
MAMarcos Amarís
Marcos Amarís
MCMárcio Castro
Márcio Castro
ABAlexandro Baldassin
Alexandro Baldassin
JLJoão V. F. Lima
João V. F. Lima
We discuss the immediate need, challenges, and opportunities to transition into greener cloud computing platforms. Actions must be taken not only by the academy and the industry, but also by computer science practitioners from several areas, such as information systems, scheduling theory, distributed systems, HPC, computer architecture, and approximate computing, to cite a few.

21 May 2023 in Revista Brasileira de Informática na Educação
Verified
Journal Article
Open access
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FPFernanda F. Peronaglio
Fernanda F. Peronaglio
AMAleardo Manacero
Aleardo Manacero
ABAlexandro Baldassin
Alexandro Baldassin
MSMatheus S. Dos Santos
Matheus S. Dos Santos
RLRenata S. Lobato
Renata S. Lobato
MCMarcos A. Cavenaghi
Marcos A. Cavenaghi
Sistemas Tutores Inteligentes têm se destacado como ferramenta de apoio ao ensino, principalmente pela sua adaptação às condições do usuário e cenário de aplicação. Diante da situação pandêmica, as ferramentas de apoio ao ensino, como os tutores, devido a sua viabilidade de utilização remota, mostram-se como uma possibilidade de suporte aos professores e alunos. Este trabalho aborda uma proposta de adaptação de conteúdo para ensino, aplicando técnicas de inteligência artificial para geração de texto e processamento de linguagem natural. Além disso, este trabalho considerou a existência de diferentes estilos de aprendizagem, variáveis conforme a personalidade do estudante e seu modo de captar informação, capaz de influenciar no nível de aprendizado. Esta variação de estilos, seguindo um modelo definido na literatura, direciona o modo de adaptação do conteúdo a ser realizado, gerando um resultado adaptado a cada estilo de aprendizagem. O processo de geração de conteúdo personalizado permite um avanço na forma de uso de sistemas tutores no ensino, criando um formato de entrega direcionada de conteúdo com ganhos para o usuário do ambiente, gerando um resultado personalizado e conduzindo a uma aprendizagem mais efetiva. Como resultado se espera obter uma metodologia para geração de conteúdo baseados em estilos de aprendizagem pré-definidos, por meio de processamento automatizado de adaptação do conteúdo a partir de entrada inicial em formato único.