Papers by Benjamin Clark Roque Cruz
Revista de Gestão e Secretariado (Management and Administrative Professional Review)
Este é um estudo sobre uma Proposta de Ampliação da Tecnologia de Internet via Satélite para as e... more Este é um estudo sobre uma Proposta de Ampliação da Tecnologia de Internet via Satélite para as escolas da rede pública do município de Tabatinga/AM. No Amazonas, mais da metade dos estudantes de escolas públicas do interior do estado, não tem acesso à internet, seja por indisponibilidade de rede nas regiões mais longínquas do estado onde vivem, por problemas financeiros para estabelecer contratos dos serviços de provedores ou mesmo a compra de aparelhos celulares ou notebook (AMAZONAS ATUAL, 2018). Apesar dos esforços em projetos de políticas públicas, o estado ainda é deficitário. Diante de tal situação, foi estabelecido o seguinte problema: Quais os principais desafios para ampliação da tecnologia de internet via satélite para as escolas da rede pública de ensino no município de Tabatinga/AM? O objetivo foi analisar os procedimentos de funcionamento da tecnologia de internet via satélite, contextualizando bibliograficamente os desafios enfrentados pelo Amazonas em conectar o inte...
Recibido el 2 de mayo de 2005; aceptado el 27 de enero de 2006. 1. Abstract We describe a simple ... more Recibido el 2 de mayo de 2005; aceptado el 27 de enero de 2006. 1. Abstract We describe a simple but effective methodology for the recognition of printed words from incomplete versions of them. The proposed methodology incorporates two main stages, one of word learning and one of word recognition. During word learning sets of different words with different number of letters are used to build a bank of associative memories, one associative memory for each group of words with the same number of letters. During word identification, a word is recognized as follows: First its available letters are recognized by means of a recently proposed recognition scheme based on pattern decomposition. Spaces between available letters are next detected by appropriate segmentation techniques. The whole pattern composed of the identified letters and detected spaces is presented to the corresponding trained associative memory that in turn responds with the appropriate restored word. Formal conditions fo...
Associative memories, pattern restoration, mixed noise, conformal geometric algebra
Lecture Notes in Computer Science
In this work we present an algorithm for training an associative memory based on the so-called mu... more In this work we present an algorithm for training an associative memory based on the so-called multi-layered morphological perceptron with maximal support neighborhoods. We compare the proposal with the original one by performing some experiments with real images. We show the superiority of the new one. We also give formal conditions for correct classification. We show that the proposal can be applied to the case of gray-level images and not only binary images.
Pattern Classification Based on Conformal Geometric Algebra and Optimization Techniques
Lecture Notes in Computer Science, 2008
Conformal Geometric Algebra (CGA) is a high level language commonly used in mathematical, physics... more Conformal Geometric Algebra (CGA) is a high level language commonly used in mathematical, physics and engineering problems. At a top level, CGA is a free coordinate tool for designing and modeling geometric problems; at a low level CGA provides a new coordinate framework for numeric processing in problem solving. In this paper we show how to use quadratic programming and
Geometric Associative Processing Applied to Pattern Classification
Lecture Notes in Computer Science, 2009
... In the same work [18], the so called Support Multivector Machine is introduced. The basic ide... more ... In the same work [18], the so called Support Multivector Machine is introduced. The basic idea is generate neural networks using SV-Machines (SVM) for the processing of multi-vectors in ... scalar product has to be evaluated in order to decide whether an input vector is inside or ...
Geometric Algebra Computing, 2010
Associative memories (AMs) were proposed as tools usually used in the restoration and classificat... more Associative memories (AMs) were proposed as tools usually used in the restoration and classification of distorted patterns. Many interesting models have emerged in the last years with this aim. In this chapter a novel associative memory model (Geometric Associative Memory, GAM) based on Conformal Geometric Algebra (CGA) principles is described. At a low level, CGA provides a new coordinate-free framework for numeric processing in problem solving. The proposed model makes use of CGA and quadratic programming to store associations among patterns and their respective class. To classify an unknown pattern, an inner product is applied between it and the obtained GAM. Numerical and real examples to test the proposal are given. Formal conditions are also provided that assure the correct functioning of the proposal.
Neural Processing Letters, 2006
Pattern reconstruction or pattern restoration in the presence of noise is a main problem in patte... more Pattern reconstruction or pattern restoration in the presence of noise is a main problem in pattern recognition. An essential feature of the noise acting on a pattern is its local nature. If a pattern is split into enough sub-patterns, a few of them will be less or more affected by noise, others will remain intact. In this paper, we propose a simple but effective methodology that exploits this fact for the efficient restoration of a pattern. A pattern is restored if enough of its sub-patterns are also restored. Since several patterns can share the same sub-patterns, the final decision is accomplished by means of a voting mechanism. Before deciding if a sub-pattern belongs to a pattern, sub-pattern restoration in the presence of noise is done by an associative memory. Numerical and real examples are given to show the effectiveness of the proposal. Formal conditions under which the proposal guaranties perfect restoration of a pattern from an unaltered or and altered version of it are also given.
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Papers by Benjamin Clark Roque Cruz