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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Decision support IoT framework : device discovery and stream analytics

Lunardi, Willian Tesaro 23 March 2016 (has links)
Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-08-29T13:47:15Z No. of bitstreams: 1 DIS_WILLIAN_TESSARO_LUNARDI_COMPLETO.pdf: 1857452 bytes, checksum: 335f6fe3c020d0f7f19050cdd006cca5 (MD5) / Made available in DSpace on 2016-08-29T13:47:15Z (GMT). No. of bitstreams: 1 DIS_WILLIAN_TESSARO_LUNARDI_COMPLETO.pdf: 1857452 bytes, checksum: 335f6fe3c020d0f7f19050cdd006cca5 (MD5) Previous issue date: 2016-03-23 / Durante os ?ltimos anos, como r?pido desenvolvimento e prolifera??o da Internet das Coisas (IoT), muitas ?reas de aplica??o come?aram a explorar este novo paradigma de computa??o. O n?mero de dispositivos computacionais ativos tem crescido em um ritmo acelerado ao redor do mundo. Consequentemente, um mecanismo para lidar com estes diferentes dispositivos tornou-se necess?rio. Middlewares para a IoT t?m sido desenvolvidos tanto em ambientes industriais como de pesquisa para suprir esta necessidade, no entanto, a descoberta e a sele??o de dispositivos, bem como o suporte a tomada de decis?o baseada no fluxo de dados destes dispositivos continuam sendo um desafio cr?tico. Neste trabalho apresentamos o Decision Support IoT Framework, composto pelo sistema COBASEN, um motor de busca de dispositivos da IoT, e o sistema DMS, o qual atua sobre dados de dispositivo em movimento, extra indo informa??es valiosas para dar suporte a tomada de decis?es. O sistema COBASEN opera com base nas caracter?sticas textuais dos perfis dos dispositivos. O sistema DMS utiliza processamento de eventos complexos para analisar e reagir sobre os dados de fluxo cont?nuo, permitindo, por exemplo, disparar um alerta quando um erro ou condi??o espec?fica aparece no fluxo de dados do dispositivo. O objetivo principal deste trabalho ? destacar a import?ncia de um motor de busca de dispositivos para a Internet das Coisas e um sistema de apoio ? tomada de decis?o baseado na an?lise de fluxo cont?nuo dos dispositivos IoT. Foi desenvolvido dois sistemas que implementam conceitos COBASEN e DMS. No entanto, em testes preliminares, realizado uma avalia??o funcional de ambos os sistemas em termos de desempenho. Resultados iniciais sugerem que o Decision Support IoT Framework fornece abordagens importantes que facilitam o desenvolvimento de aplica??es da Internet das Coisas, podendo executar fun??es essenciais para melhorar os processos de ambientes que fazem uso deste paradigma. / During the past few years, with the fast development and proliferation of the Internet of Things (IoT), many application areas have started to exploit this new computing paradigm. The number of active computing devices has been growing at a rapid pace in IoT environments around the world. Consequently, a mechanism to deal with this different devices has become necessary. Middleware systems solutions for IoT have been developed in both research and industrial environments to supply this need. However, device discovery and selection, as well decision analytics remain a critical challenge. In this work we present the Decision Support IoT Framework composed of COBASEN, an IoT search engine to address the research challenge regarding the discovery and selection of IoT devices when large number of devices with over lapping and sometimes redundant functionality are available in IoT middleware systems, and DMS, which allows to setup analytic computations on device data when it is still in motion, extracting valuable information from it for decision management. COBASEN operates based on textual characteristics of devices. The DMS uses Complex Event Processing to analyze and react over streaming data, allowing for example, to triggers an alert when a specific error or condition appears in the stream. The main goal of this work is to high light the importance of an IoT search engine for devices and a decision support system for stream analytics in the IoT paradigm. We developed two systems that implements COBASEN and DMS concepts. However, for preliminarily tests, we made a functional evaluation of both systems in terms of performance. Our initial findings suggest that the Decision Support IoT Framework provides important approaches that facilitate the development of IoT applications, which may perform essential roles to improve IoT processes.

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