7 results for “Carlos Roberto Valêncio”

Research ArticleOpen accessIn the author namesData Warehouse Design to Support Social Media Analysis in a Big Data EnvironmentCarlos Roberto Valêncio, Luis Marcello Moraes Silva, William Tenório et al.The volume of generated and stored data from social media has increased in the last decade. Therefore, analyzing and understanding this kind of data can offer relevant information in different contexts and can assist researchers and companies in the decision-making process. However, the data are scattered in a large volume, come from different sources, with different formats and are rapidly … …Journal of Computer Science, Vol. 16, Issue 2 · 20 Feb 2020 · 8,229 accessesView PDF Cite

Research ArticleOpen accessIn the author namesA User-Driven Association Rule Mining Based on Templates for Multi-Relational DataCarlos Roberto Valêncio, Guilherme Henrique Morais, Márcio Zamboti Fortes et al.Data mining algorithms to find association rules are an important tool to extract knowledge from databases. However, these algorithms produce an enormous amount of rules, many of which could be redundant or irrelevant for a specific decision-making process. Also, the use of previous knowledge and hypothesis are not considered by these algorithms. On the other hand, most existing data mining … …Journal of Computer Science, Vol. 14, Issue 11 · 8 Nov 2018 · 7,447 accessesView PDF Cite

Research ArticleOpen accessIn the author namesPerformance Improvement of SNP Search Using Multithread ProgrammingGeraldo Francisco Donegá Zafalon, Álvaro Magri Nogueira da Cruz, Anderson Rici Amorim et al.Pattern recognition is an important field in Bioinformatics and a well-known task is the search for Single Nucleotide Polymorphism (SNP). It is possible to search for a known SNP position and analyze it using patterns of DNA bases, called masks. Nonetheless, this process becomes computationally expensive as the amount of available genomic data increases. Thus, in this study, we have … …Journal of Computer Science, Vol. 14, Issue 11 · 7 Nov 2018 · 7,738 accessesView PDF Cite

Research ArticleOpen accessIn the author namesExploring Mesh Generation and Quality Enhancement with Open Source CodesLeandro Alves Neves, José Márcio Machado, Julio Cesar Momente et al.The finite element method is a very reliable and precise technique for solving partial differential equations in three-dimensional domains, with relevant applications in several areas. However, 3D simulations by FEM require computer programs for solid modeling and automatic mesh generation and there are few examples of open source codes available and dedicated to these tasks. Unfortunately, these open source codes … …Journal of Computer Science, Vol. 14, Issue 7 · 19 Jul 2018 · 8,365 accessesView PDF Cite

Research ArticleOpen accessIn the author namesA Fast Access Big Data Approach for Configurable and Scalable Object Storage Enabling Mixed Fault-ToleranceCarlos Roberto Valêncio, André Francisco Morielo Caetano, Angelo Cesar Colombini et al.The progressive growth in the volume of digital data has become a technological challenge of great interest in the field of computer science. That comes because, with the spread of personal computers and networks worldwide, content generation is taking larger proportions and very different formats from what had been usual until then. To analyze and extract relevant knowledge from these … …Journal of Computer Science, Vol. 13, Issue 6 · 1 Jul 2017 · 7,895 accessesView PDF Cite