Research initiative, treatment action : RITA最新文献_第9页

Use of text mining techniques for unsupervised organization of digital procedural acts 文本挖掘技术在数字程序行为无监督组织中的应用

Research initiative, treatment action : RITA Pub Date : 2018-11-19 DOI: 10.22456/2175-2745.83581

Alfredo Silveira Araújo Neto, Marcos Negreiros

{"title":"Use of text mining techniques for unsupervised organization of digital procedural acts","authors":"Alfredo Silveira Araújo Neto, Marcos Negreiros","doi":"10.22456/2175-2745.83581","DOIUrl":"https://doi.org/10.22456/2175-2745.83581","url":null,"abstract":"The rapid advances in technologies related to the capture and storage of data in digital format have allowed to organizations the accumulation of a volume of information extremely high, constituted a higher proportion of data in unstructured format, represented by texts. However, it is noted that the retrieval of useful information from these large repositories has been a very challenging activity. In this context, data mining is presented as a self-discovery process that acts on large databases and enables the knowledge extraction from raw text documents. Among the many sources of textual documents are electronic diaries of justice, which are intended to make public officially all the acts of the Judiciary. Despite the publication in digital form has provided improvements represented by the removal of imperfections related to divulgation at printed format, it is observed that the application of data mining methods could render more rapid analysis of its contents. In this sense, this article establishes a tool capable of automatically grouping and categorizing digital procedural acts, based on the evaluation of text mining techniques applied to groups determination activity. In addition, the strategy of defining the descriptors of the groups, that is usually conducted based on the most frequent words in the documents, was evaluated and remodeled in order to use, instead of words, the most regularly identified concepts in the texts.","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"423 1","pages":"74-102"},"PeriodicalIF":0.0,"publicationDate":"2018-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79539276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Investigation of Archiving Techniques for Evolutionary Multi-objective Optimizers 进化多目标优化器归档技术研究

Research initiative, treatment action : RITA Pub Date : 2018-11-19 DOI: 10.22456/2175-2745.80478

H. Medeiros, E. Goldbarg, M. Goldbarg

{"title":"Investigation of Archiving Techniques for Evolutionary Multi-objective Optimizers","authors":"H. Medeiros, E. Goldbarg, M. Goldbarg","doi":"10.22456/2175-2745.80478","DOIUrl":"https://doi.org/10.22456/2175-2745.80478","url":null,"abstract":"Abstract: The optimization of multi-objective problems from the Pareto dominance viewpoint can lead to huge sets of incomparable solutions. Many heuristic techniques proposed to these problems have to deal with approximation sets that can be limited or not. Usually, a new solution generated by a heuristic is compared with other archived non-dominated solutions generated previously. Many techniques deal with limited size archives, since comparisons within unlimited archives may require significant computational effort. To maintain limited archives, solutions need to be discarded. Several techniques were proposed to deal with the problem of deciding which solutions remain in the archive and which are discarded. Previous investigations showed that those techniques might not prevent deterioration of the archives. In this study, we propose to store discarded solutions in a secondary archive and, periodically, recycle them, bringing them back to the optimization process. Three recycling techniques were investigated for three known methods. The datasets for the experiments consisted of 91 instances of discrete and continuous problems with 2, 3 and 4 objectives. The results showed that the recycling method can benefit the tested optimizers on many problem classes.","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"6 1","pages":"11-27"},"PeriodicalIF":0.0,"publicationDate":"2018-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80157485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CoWPar: A D2D Communication Approach Without Pairing for Mobile Social Network in Proximity 一种不需要配对的移动社交网络D2D通信方法

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.79152

C. T. Garrocho, Jessé Pires Barbosa Rocha, José Eduardo de Souza

{"title":"CoWPar: A D2D Communication Approach Without Pairing for Mobile Social Network in Proximity","authors":"C. T. Garrocho, Jessé Pires Barbosa Rocha, José Eduardo de Souza","doi":"10.22456/2175-2745.79152","DOIUrl":"https://doi.org/10.22456/2175-2745.79152","url":null,"abstract":"Mobile devices and the cellular network have been popularized and evolving in recent years. The increase of these devices may promote Device-to-Device (D2D) communications. However, current D2D communication technologies such as Wi-Fi Direct, Wi-Fi Ad Hoc, and Bluetooth are not available on devices or require human interaction in the pairing process. In addition, the cellular network is not available in many places and has partial or total communication infrastructure failures. To overcome this failure and lack of connectivity, and to allow D2D communication between devices in disturbing scenarios, we presented CoWPar. Based on the Wi-Fi infrastructure mode, CoWPar establishes the connection and performs data exchange without human interaction between the devices. Results of experiments performed in a proof of concept showed in practice that CoWPar allowed D2D communications with no pairing and also without the need to change the operating system (OS) of the devices, surpassing all the works available so far and thus contributing to the process of viabilization the paradigm of Pervasive Computing.","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"25 1","pages":"11-22"},"PeriodicalIF":0.0,"publicationDate":"2018-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79141863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Can the Use of nonlinear Color Metrics systematically improve Segmentation? 使用非线性颜色度量可以系统地改善分割吗?

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.79885

L. Carvalho, S. L. M. Neto, E. Comunello, A. Sobieranski, A. V. Wangenheim

{"title":"Can the Use of nonlinear Color Metrics systematically improve Segmentation?","authors":"L. Carvalho, S. L. M. Neto, E. Comunello, A. Sobieranski, A. V. Wangenheim","doi":"10.22456/2175-2745.79885","DOIUrl":"https://doi.org/10.22456/2175-2745.79885","url":null,"abstract":"Image segmentation is a procedure where an image is split into its constituent parts, according to some criterion. In the literature, there are different well-known approaches for segmentation, such as clustering, thresholding, graph theory and region growing. Such approaches, additionally, can be combined with color distance metrics, playing an important role for color similarity computation. Aiming to investigate general approaches able to enhance the performance of segmentation methods, this work presents an empirical study of the effect of a nonlinear color metric on segmentation procedures. For this purpose, three algorithms were chosen: Mumford-Shah, Color Structure Code and Felzenszwalb and Huttenlocher Segmentation. The color similarity metric employed by these algorithms (L2-norm) was replaced by the Polynomial Mahalanobis Distance. This metric is an extension of the statistical Mahalanobis Distance used to measure the distance between coordinates and distribution centers. An evaluation based upon automated comparison of segmentation results against ground truths from the Berkeley Dataset was performed. All three segmentation approaches were compared to their traditional implementations, against each other and also to a large set of other segmentation methods. The statistical analysis performed has indicated a systematic improvement of segmentation results for all three segmentation approaches when the nonlinear metric was employed.","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"25 1","pages":"23-38"},"PeriodicalIF":0.0,"publicationDate":"2018-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73322605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Um modelo computacional para a simulação de sistemas de transporte urbano 城市交通系统仿真计算模型

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.80557

D. G. Morais, L. Digiampietri

引用次数: 0

V: a language with extensible record accessors and a trait-based type system 一种具有可扩展记录访问器和基于特征的类型系统的语言

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.82772

Arthur Giesel Vedana, Rodrigo Machado, Álvaro Freitas Moreira

引用次数: 0

Formal Semantics for Java-like Languages and Research Opportunities 类java语言的形式语义和研究机会

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.80912

Samuel da Silva Feitosa, R. Ribeiro, A. R. D. Bois

引用次数: 0

Haskell Type System Analysis Haskell类型系统分析

Research initiative, treatment action : RITA Pub Date : 2018-09-12 DOI: 10.22456/2175-2745.82395

R. C. Silva, K. Roggia, Cristiano D. Vasconcellos

引用次数: 0

Modelos para avaliação de disponibilidade orientada a capacidade de uma nuvem privada 私有云面向容量的可用性评估模型

Research initiative, treatment action : RITA Pub Date : 2018-07-17 DOI: 10.22456/2175-2745.79158

Matheus D'Eça Torquato de Melo, L. Torquato, P. Maciel

{"title":"Modelos para avaliação de disponibilidade orientada a capacidade de uma nuvem privada","authors":"Matheus D'Eça Torquato de Melo, L. Torquato, P. Maciel","doi":"10.22456/2175-2745.79158","DOIUrl":"https://doi.org/10.22456/2175-2745.79158","url":null,"abstract":"Alta disponibilidade e um dos principais requisitos das aplicacoes que utilizam computacao em nuvem. E possivel aplicar redundâncias em hardware e software para alcancar melhores niveis de disponibilidade do sistema. Porem, alem da preocupacao com a disponibilidade do servico, e necessario mensurar a capacidade do sistema em lidar com a carga de trabalho apresentada. Uma metrica que pode ser utilizada para mensurar essa capacidade e a disponibilidade orientada a capacidade. A partir dessa metrica, e possivel obter estimativas dos recursos computacionais disponiveis para utilizacao quando o sistema esta em funcionamento. Esse trabalho apresenta um conjunto de modelos analiticos para avaliacao de disponibilidade orientada a capacidade considerando ambientes de nuvem privada. Para verificar diferentes situacoes, esse trabalho apresenta seis diferentes arquiteturas de nuvem privada. Os componentes fundamentais de cada arquitetura sao Front-End, PM e VMs. O conjunto de resultados apresentados compreende a avaliacao de disponibilidade, avaliacao de disponibilidade orientada a capacidade e analise de sensibilidade dos dos parâmetros utilizados nos modelos. A partir dos resultados e possivel inferir quais componentes sao mais importantes para cada uma das metricas estudadas.","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"52 1","pages":"73-84"},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76205715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Algoritmos de Escalonamento Gangue com Estratégias de Migracão em um Ambiente MCMCA MCMCA环境中具有迁移策略的帮派调度算法

Research initiative, treatment action : RITA Pub Date : 2018-07-17 DOI: 10.22456/2175-2745.79994

F. A. P. Pinto, Henrique Jorge A. Holanda, G. Barroso, Carla Katarina M. Marques

{"title":"Algoritmos de Escalonamento Gangue com Estratégias de Migracão em um Ambiente MCMCA","authors":"F. A. P. Pinto, Henrique Jorge A. Holanda, G. Barroso, Carla Katarina M. Marques","doi":"10.22456/2175-2745.79994","DOIUrl":"https://doi.org/10.22456/2175-2745.79994","url":null,"abstract":"Ao longo da ultima decada, o rapido avanco das tecnologias de rede, hardware e middleware, bem como a sofisticacao dos recursos de software contribuiram para o surgimento de novos modelos computacionais. Consequentemente, houve uma capacidade crescente para o uso eficiente e efetivo de recursos distribuidos visando integra-los, de modo a fornecer um ambiente amplamente distribuido, cuja capacidade computacional podendo ser utilizada para resolver problemas complexos. Os dois aspectos mais desafiadores dos sistemas distribuidos, sao o gerenciamento de recursos e o escalonamento de tarefas. Este trabalho contribui para minimizar tais problematicas: (i) atraves do uso de tecnicas de migracao; (ii) a implementacao de um ambiente de simulacao multicore multicluster com mecanismo de balanceamento de carga, a fim de analisar o sistema em diversos contextos; (iii) implementacao e analise dos escalonadores de gangues atraves de metricas com intuito de medir o desempenho em diferentes situacoes. Assim, os resultados mostraram um melhor uso dos recursos, implicando na reducao de custos operacionais","PeriodicalId":82472,"journal":{"name":"Research initiative, treatment action : RITA","volume":"28 2","pages":"56-72"},"PeriodicalIF":0.0,"publicationDate":"2018-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72568997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0