Um Método para a Utilização de Ontologias na Indexação Automática

The indexing process aims to represent synthetically the informational content of documents by a set of terms whose meanings indicate the themes or subjects treated by them. With the emergence of the Web, research in automatic indexing received major boost with the necessity of retrieving documents from this huge collection. The traditional indexing languages, used to translate the thematic content of documents in standardized terms, always proved efficient in manual indexing. Ontologies open new perspectives for research in automatic indexing, offering a computer-process able language restricted to a particular domain. The use of ontologies in the automatic indexing process allows using a specific domain language and a logical and conceptual framework to make inferences, and whose relations allow an expansion of the terms extracted directly from the text of the document. This paper presents techniques for the construction and use of ontologies in the automatic indexing process. We conclude that the use of ontologies in the indexing process allows to add not only new feature to the indexing process, but also allows us to think in new and advanced features in an information retrieval system.

Capacitação em serviço de arquivo: o arquivista frente aos desfios das novas tecnologias de informação e comunicação

The professional archivist must be able to acquire apprenticeship and to pass his team of work, fulfilling so in satisfactory way his to do inside the institution which works, making possible, the use, the dissemination, organization, recuperation of the information. Since an enabled, well prepared professional develops of doing his efficient way inside the organization (or institution), and it bears in mind what must always be updated and prepared so the new technologies of the information and communication changes are in constant, therefore the professional of the information (archivist) must be constantly looking for apprenticeship, to be enabled through the continued education.

Use of classification in organizing and searching the web

The traditional characteristics and challenges for organizing and searching information on the World Wide Web are outlined and reviewed. The classification features of two of these methods, such as Google, in the case of automated search engines, and Yahoo! Directory, in the case of subject directories are analyzed. Recent advances in the Semantic Web, particularly the growing application of ontologies and Linked Data are also reviewed. Finally, some problems and prospects related to the use of classification and indexing on the World Wide Web are discussed, emphasizing the need of rethinking the role of classification in the organization of these resources and outlining the possibilities of applying Ranganathan's facet theories of classification.

Estudo de métodos para anotação linguística e extração de conceitos na aquisição de ontologias a partir de textos

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Proposta de arquitetura e protocolo para a geração automática de assinaturas de malwares

Given the exponential growth in the spread of the virus world wide web (Internet) and its increasing complexity, it is necessary to adopt more complex systems for the extraction of malware finger-prints (malware fingerprints - malicious software; is the name given to extracting unique information leading to identification of the virus, equivalent to humans, the fingerprint). The architecture and protocol proposed here aim to achieve more efficient fingerprints, using techniques that make a single fingerprint enough to compromise an entire group of viruses. This efficiency is given by the use of a hybrid approach of extracting fingerprints, taking into account the analysis of the code and the behavior of the sample, so called viruses. The main targets of this proposed system are Polymorphics and Metamorphics Malwares, given the difficulty in creating fingerprints that identify an entire family from these viruses. This difficulty is created by the use of techniques that have as their main objective compromise analysis by experts. The parameters chosen for the behavioral analysis are: File System; Records Windows; RAM Dump and API calls. As for the analysis of the code, the objective is to create, in binary virus, divisions in blocks, where it is possible to extract hashes. This technique considers the instruction there and its neighborhood, characterized as being accurate. In short, with this information is intended to predict and draw a profile of action of the virus and then create a fingerprint based on the degree of kinship between them (threshold), whose goal is to increase the ability to detect viruses that do not make part of the same family

Diretrizes para a utilização de ontologias na indexação automática

Pós-graduação em Ciência da Informação - FFC

O citar no Twitter: o caso de Clarice Lispector

The phenomenon of the World Wide Web, the Internet, has revolutionized the way we live in a contemporary relevance. The relationships among people have changed since the media also changed: the cyberspace has been established as an important vehicle of communication in which different languages, cultures and peoples coexist. Within the virtual space there are several fica possibilities for communication, interaction, fun, knowledge etc. Everything happens extremely quickly. An interesting example of that are blogs that, to survive virtuality, require constant updating. It has become interesting to notice the factor of personal expressiveness taking a new shape in the context of network, before being seen in elements such as diaries, poetry, artistic production or debate. The chances and, thus, the need to find people to interact and to share interests has taken a gigantic proportion, and, in this way, sources of audiovisual and reading activities are always in vogue, being shared every second. Blogging can be about different subjects, but what is perceived on all blogs is the strong trace of written text is always presented. Twitter has established itself as a microblogging network for the expression of dynamism, information sharing and interaction. Thus, it was interesting to approach the manner language is expressed in these microblogs thinking about the way that literary discourse is constructed when is seen, on quotations, in the context of this social network: Twitter. Being able to attest the great increase on the occurrences of quotes from different literary genres, it was useful to pay attention to this fact. In Brazil, Twitter has thousands of users, fans and readers, that rewrite and quote authors. The number of quotations is so abundant that it has popularized several Brazilian writers, such as: Clarice Lispector and Caio Fernando Abreu; authors that are frequetenly quoted. So, we made usage of semiotic studies of the French line. In...

Uso da linguagem documentária na busca da informação em bibliotecas universitárias: a perspectiva dos deficientes visuais

Pós-graduação em Ciência da Informação - FFC

Framework para prospecção de dados espaciais baseado em semântica apoiado por ontologias

Pós-graduação em Ciência da Computação - IBILCE

L3-arpsec - módulo seguro para controle e proteção do protocolo de resolução de endereços em redes definidas por software

Pós-graduação em Engenharia Elétrica - FEIS

Fluxo e tecnologias de informação no contexto brasileiro de inventário de ciclo de vida

Pós-graduação em Ciência da Informação - FFC

A formação de professores e o uso pedagógico da Web 2.0: a visão de estudantes de licenciatura

The aim of this paper is to discuss the importance of training teachers to use Web 2.0 in the classroom. Its intention was to fi nd out whether students are familiar with the main Web 2.0 resources and know how to exploit their potential in the development of teaching activities. In addition to the literature review, we developed a fi eld exploratory-descriptive research. The research was held in a private university located in the city of Bauru (São Paulo State, Brazil). We selected 213 students enrolled in “Supervised Training III” course, which is part of the teacher training curriculum available for students in the second year of undergraduate course. Results concluded that the students surveyed have access to computers and the Internet, are relatively skilled in handling the available tools and recognize the importance of including them in the teaching and learning process. The students demonstrate diffi culty using the web in a didactic manner, particularly the Web 2.0, which involves a focus on users and collaboration. Therefore, the article points to the need to rethink teacher training courses in order to include practical activities aimed at the use of technology as a teaching resource.

Framework para integração semântica de dados geoespaciais: integração de dados geológicos

Pós-graduação em Ciência da Computação - IBILCE

Scalable Web Server Clustering Technologies

The exponential growth of the Internet, coupled with the increasing popularity of dynamically generated content on the World Wide Web, has created the need for more and faster Web servers capable of serving the over 100 million Internet users. Server clustering has emerged as a promising technique to build scalable Web servers. In this article we examine the seminal work, early products, and a sample of contemporary commercial offerings in the field of transparent Web server clustering. We broadly classify transparent server clustering into three categories.

Portal de Busca Integrada do SIBiUSP: metodologia de implantação

Relata o estudo, a instalação e implantação de ferramenta de descoberta e entrega do Portal de Busca Integrada, para o Sistema Integrado de Bibliotecas da Universidade de São Paulo (SIBiUSP). Esta nova interface denominada Portal de Busca Integrada possibilita uma nova experiência de pesquisa científica ao usuário final pela recuperação de literatura em diferentes fontes de informação.