Made available in DSpace on 2014-06-12T17:42:14Z (GMT). No. of bitstreams: 1 license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2004 / Com o advento da World Wide Web na década de 90, a Internet ganhou uma nova dimensão jamais imaginada pelo seu criador Tim Berners-Lee e seus colegas do CERN. A Web, como é conhecida hoje, utiliza documentos dinâmicos - denominados hipertextos - interligados entre si por meio dos denominamos hiperlinks. Os hiperlinks formam um grafo de alta complexidade e conectividade. Hoje, inexiste uma maneira consistente de gerenciar as páginas Web, levando freqüentemente a seguirmos endereços de páginas removidas. Esta dissertação apresenta uma aplicação do algoritmo de coleta de lixo para o gerenciamento consistente de páginas Web. Este algoritmo é baseado no algoritmo de gerenciamento automático de memória em sistemas distribuídos proposto por Lins, que utiliza a contagem de referência ponderada distribuída, aplicado à identificação e coleta de páginas não mais referenciadas, que podem estar em árvore ou formando ciclos

The explosive and continuous growth in the size and use of the World Wide Web is at the basis of the great interest into web usage mining techniques in both research and commercial areas. In particular, the need for predicting the user’s needs in order to improve the usability and user retention of a web site is more than evident and can be addressed by personalization. In this thesis, we introduce a new framework that takes advantage of the sophisticated association rule finding web mining technology on both dynamic user activities over a web site, such as navigational behavior, and static information, such as user profiles and web content. We also provide a novel personalization selection system which allows users to choose the most suitable profile for them in any given period of time. In order to examine the viability of our framework, we incorporate and implement it over a well designed simulation environment. Moreover, our experiment proves that our framework provides an overall better web personalization service in terms of both recommendation accuracy and user satisfaction. / Science, Faculty of / Computer Science, Department of / Graduate

The web of data has continued to expand thanks to the principles of Linked Data outlined by Tim Berners-Lee, increasing its impact on the semantic web both in its depth and range of data sources. Meanwhile traditional web applications and technologies, with a strong focus on user interaction, such as blogs, wikis, folksonomies-based systems, and content management systems have become an integral part of the World Wide Web. However the semantic web has not yet managed to fully harness these technologies, resulting in a lack of linked data coming from user-generated content. The high level aim of this thesis is to answer the question of whether semantic web applications can be configured to use existing technologies that encourage usergenerated content on the Web. This thesis proposes an approach to reusing user-generated content from folksonomybased systems in semantic web applications, allowing these applications to be configured to make use of the structure and associated reasoning power of the semantic web, but while being able to reuse the vast amount of data already existing in these folksonomy-based systems. It proposes two new methods of semantic web application development: (i) a reusable infrastructure for building semantic mashup applications that can be configured to make use of the proposed approach; and (ii) a approach to configuring traditional web content management systems (CMS) to maintain repositories of Linked Data. The proposed approach allows semantic web applications to make use of tagged resources, while also addressing some limitations of the folksonomy approach by using ontology reasoning to exploit the structured information held in domain ontologies. The reusable infrastructure provides a set of components to allow semantic web applications to be configured to reuse content from folksonomy-based systems, while also allowing the users of these systems to contribute to the semantic web indirectly via the proposed approach. The proposed Linked Data CMS approach provides a configurable tools for semantic web application developers to develop an entire website based on linked data, while allowing ordinary web users to contribute directly to the semantic web using familiar CMS tools. The approaches proposed in this thesis make use of lightweight ontology reasoning, which is both efficient and scalable, to provide a basis for the development of practical semantic web applications. The research presented in this thesis shows how the semantic web can reuse both folksonomies and content management systems from Web 2.0 to help narrow the gap between these two key areas of the web.

This study investigates the Web presence and Web Impact Factor (WIF) for country code top-level domains (ccTLDs) of Middle-Eastern countries, and sub-level domains (SLDs) related to education and academic institutions in these countries. Counts of links to the web sites of Middle-Eastern countries were calculated from the output of Yahoo search engine. In this study, we compute the WIF at two levels: top-level domains, and sub-level domains. The results show that the Middle-Eastern countries, apart from Turkey, Israel and Iran, have a low web presence. On the other hand, their web sites have a low inlink WIF. Specific features of sites may affect a countryâ s Web Impact Factor. For linguistic reasons, Middle-Eastern web sites (Persian, Kurdish, Turkish, Arabic, and Hebrew languages) may not receive and attract the attention that they deserve from the World Wide Web community.

Tese de mestrado integrado. Engenharia Informática e Computação. Faculdade de Engenharia. Universidade do Porto. 2009

Estágio realizado na Auditmark e orientado pelo Eng.º Rui Ribeiro / Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores (Major de Telecomunicações). Faculdade de Engenharia. Universidade do Porto. 2009

Tese de mestrado integrado. Engenharia Electrotécnica e de Computadores - Major Automação. Faculdade de Engenharia. Universidade do Porto. 2008

Thesis (M.S.)--Washington State University, December 2007. / Includes bibliographical references (p. 66-69).

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Thesis (M.S.)--Worcester Polytechnic Institute. / Keywords: HTTP/1.1 -- replicated -- caching -- load balancing -- web content -- distributed. Includes bibliographical references (p. 95-98).