A Web Metadata Based-Model for Information Quality Prediction

A Web Metadata Based-Model for Information Quality Prediction

Ricardo Barros (COPPE - Federal University of Rio de Janeiro, Brazil), Geraldo Xexéo (COPPE - Federal University of Rio de Janeiro, Brazil), Wallace A. Pinheiro (COPPE - Federal University of Rio de Janeiro, Brazil) and Jano de Souza (COPPE - Federal University of Rio de Janeiro, Brazil)
Copyright: © 2008 |Pages: 20
DOI: 10.4018/978-1-59904-847-5.ch019
OnDemand PDF Download:


Currently, in the Web environment, users have to deal with an enormous amount of information. In a Web search, they often receive useless, replicated, outdated, or false data, which, at first, they have no means to assess. Web search engines provide good examples of these problems: As reply from these mechanisms, users usually find links to replicated or conflicting information. Further, in these cases, information is spread out among heterogeneous and unrelated data sources, that normally present different information quality approaches. This chapter addresses those issues by proposing a Web Metadata-Based Model to evaluate and recommend Web pages based on their information quality, as predicted by their metadata. We adopt a fuzzy theory approach to obtain the values of quality dimensions from metadata values and to evaluate the quality of information, taking advantage of fuzzy logic’s ability to capture humans’ imprecise knowledge and deal with different concepts.

Key Terms in this Chapter

Fuzzy Sets: are an extension of classical set theory and are used in fuzzy logic. In classical set theory, the membership of elements in relation to a set is assessed in binary terms according to a crisp condition: An element either belongs or does not belong to the set. By contrast, fuzzy set theory permits the gradual assessment of the membership of elements in relation to a set (Klir & Yuan, 1995).

Context: and Contextualization specify a scope or a boundary for a knowledge domain (Lee, 2004).

Fuzzy Logic: is derived from fuzzy set theory dealing with reasoning that is approximate rather than precisely deduced from classical predicate logic. It can be thought of as the application side of fuzzy set theory dealing with well-thought-out real-world expert values for a complex problem (Klir & Yuan, 1995).

Metadata: is data about data, and Web metadata “is machine-understandable description of things on (and about) the Web”18.

Quality dimensions: represent the adopted information quality evaluation criteria and factors able to represent users’ quality expectations (Pipino et al., 2002).

PICS™: specification enables labels (metadata) to be associated with Internet content. It was originally designed to help parents and teachers control what children access on the Internet, but it also facilitates other uses for labels, including code signing and privacy. The PICS platform is one on which other rating services and filtering software have been built.

Information Quality: is a multidimensional concept, since users must deal with both subjective perceptions of the individuals involved with the data, and objective measurements based on the dataset under evaluation (Pipino et al., 2002).

Complete Chapter List

Search this Book:
Editorial Advisory Board
Table of Contents
Coral Calero, M. Angeles Moraga, Mario Piattini
Chapter 1
Emilia Mendes
Surveying and classifying previous work on a particular field brings several benefits, which are: 1) to help organise a given body of knowledge; 2)... Sample PDF
Sizing Web Applications for Web Effort Estimation
Chapter 2
Emilia Mendes, Silvia Abrahão
Effort models and effort estimates help project managers allocate resources, control costs and schedule, and improve current practices, leading to... Sample PDF
Web Development Effort Estimation: An Empirical Analysis
Chapter 3
Pankaj Kamthan
The significance of approaching Web information systems (WIS) from an engineering viewpoint is emphasized. A methodology for deploying patterns as... Sample PDF
Patterns for Improving the Pragmatic Quality of Web Information Systems
Chapter 4
Rosemary Stockdale, Chad Lin
Many small and medium sized businesses (SMEs) have set up their own Web sites, as part of their business strategies, to improve their... Sample PDF
Evaluation of the Effectiveness of Small and Medium Sized Businesses Web Sites in a Business to Business Context
Chapter 5
May Haydar, Ghazwa Malak, Houari Sahraoui, Alexandre Petrenko, Sergiy Boroday
This chapter addresses the problem of Web application quality assessment from two perspectives. First, it shows the use of model checking of... Sample PDF
Anomaly Detection and Quality Evaluation of Web Applications
Chapter 6
Thomas Mandl
Automatic quality assessment of Web pages needs to complement human information work in the current situation of an information overload. Several... Sample PDF
Automatic Quality Assessment for Internet Pages
Chapter 7
Mª Ángeles Moraga, Julio Córdoba, Coral Calero, Cristina Cachero
The success of Web portals has increased over time, in such a way that a portal user can choose among a wide variety of portals. Therefore, the... Sample PDF
A General View of Quality Models for Web Portals and a Particularization to E-Banking Domain
Chapter 8
Angélica Caro, Coral Calero, Mario Piattini
Web portals are Internet-based applications that provide a big amount of data. The data consumer who uses the data given by these applications needs... Sample PDF
A Data Quality Model for Web Portals
Chapter 9
Marta Fernández de Arriba, Eugenia Díaz, Jesús Rodríguez Pérez
This chapter presents the structure of an index which serves as support so allowing the development team to create the specification of the context... Sample PDF
Specification of the Context of Use for the Development of Web-Based Applications
Chapter 10
Web Accessibility  (pages 163-180)
Carlos García Moreno
This chapter faces the Web accessibility issue from the perspective of Web Information Systems Quality, which is the main topic of the handbook. The... Sample PDF
Web Accessibility
Chapter 11
Adriana Martín, Alejandra Cechich, Gustavo Rossi
Web accessibility is one facet of Web quality in use, and one of the main actors upon which the success of a Web site depends. In spite of these... Sample PDF
Comparing Approaches to Web Accessibility Assessment
Chapter 12
Soonhwa Seok
Digital inclusion and Web accessibility are integral parts of modern culture and, as such, have implications for social accountability. The World... Sample PDF
Maximizing Web Accessibility Through User-Centered Interface Design
Chapter 13
Francisco Montero, María Dolores Lozano, Pascual González
World Wide Web software development is a challenge. The need to provide appealing and attractive user interfaces is combined with the fact that the... Sample PDF
Usability-Oriented Quality Model Based on Ergonomic Criteria
Chapter 14
Maristella Matera, Francesca Rizzo, Rebeca Cortázar, Asier Perallos
Given the emergent need for usability, during last year’s traditional development processes have been extended for enabling the fulfillment of... Sample PDF
The Usability Dimension in the Development of Web Applications
Chapter 15
Fernando Bellas, Iñaki Paz, Alberto Pan, Óscar Díaz
Portlets are interactive Web mini-applications that can be plugged into a portal. This chapter focuses on “portletizing” existing Web applications... Sample PDF
New Approaches to Portletization of Web Applications
Chapter 16
Victoria Torres, Joan Fons, Vicente Pelechano
Users consider usability aspects as a key factor when using Web applications. For this reason, in this work we take a special care in this very... Sample PDF
Handling Usability Aspects for the Construction of Business Process Driven Web Applications
Chapter 17
Nicolas Guelfi, Cédric Pruski, Chantal Reynaud
The evolution of Web information is of utmost importance in the design of good Web Information Systems applications. New emerging paradigms, like... Sample PDF
Towards the Adaptive Web Using Metadata Evolution
Chapter 18
Carmen Martínez-Cruz, Ignacio José Blanco, M. Amparo Vila
The Semantic Web has resulted in a wide range of information (e.g., HML, XML, DOC, PDF documents, ontologies, interfaces, forms, etc.) being made... Sample PDF
Looking for Information in Fuzzy Relational Databases Accessible Via Web
Chapter 19
Ricardo Barros, Geraldo Xexéo, Wallace A. Pinheiro, Jano de Souza
Currently, in the Web environment, users have to deal with an enormous amount of information. In a Web search, they often receive useless... Sample PDF
A Web Metadata Based-Model for Information Quality Prediction
Chapter 20
Fernando Molina, Francisco J. Lucas, Ambrosio Toval Alvarez, Juan M. Vara, Paloma Cáceres, Esperanza Marcos
Recent years have seen the arrival of the Internet as the platform that supports most areas within organizations, a fact which has led to the... Sample PDF
Towards Quality Web Information Systems Through Precise Model-Driven Development
Chapter 21
M.J. Escalona, G. Aragón
The increasing complexity and the many different aspects that should be treated at the same time require flexible but powerful methodologies to... Sample PDF
The Use of Metamodels in Web Requirements to Assure the Consistence
Chapter 22
Cristina Cachero Castro, Coral Calero, Yolanda Marhuenda García
This chapter introduces the necessity to consider quality management activities as part of the Web engineering (WE) process to improve the final... Sample PDF
A Quality-Aware Engineering Process for Web Applications
Chapter 23
Sergej Sizov, Stefan Siersdorfer
This chapter addresses the problem of automatically organizing heterogeneous collections of Web documents for the generation of thematically-focused... Sample PDF
Restrictive Methods and Meta Methods for Thematically Focused Web Exploration
Chapter 24
Mª Ángeles Moraga, Ignacio García-Rodríguez de Guzmán, Coral Calero, Mario Piattini
The use of Web portals continues to rise, showing their importance in the current information society. Specifically, this chapter focuses on... Sample PDF
WSRP-O: An Ontology to Model WSRP Compliant Portlets
Chapter 25
Tony C. Shan, Winnie W. Hua
This article defines a comprehensive set of guiding principles, called philosophy of architecture design (PAD), as a means of coping with the... Sample PDF
Philosophy of Architecture Design in Web Information Systems
Chapter 26
Mohamed Salah Hamdi
Conventional Web search engines return long lists of ranked documents that users are forced to sift through to find relevant documents. The... Sample PDF
Improving the Quality of Web Search
Chapter 27
Jengchung V. Chen, Wen-Hsiang Lu, Kuan-Yu He, Yao-Sheng Chang
With the fast growth of the Web, users often suffer from the problem of information overload, since many existing search engines respond to queries... Sample PDF
The Perspectives of Improving Web Search Engine Quality
Chapter 28
Xiannong Meng
This chapter surveys various technologies involved in a Web search engine with an emphasis on performance analysis issues. The aspects of a... Sample PDF
Web Search Engine Architectures and their Performance Analysis
Chapter 29
Fotis Lazarinis
As the Web population continues to grow, more non-English users will be amassed online. The purpose of this chapter is to describe the methods and... Sample PDF
Towards a Model for Evaluating Web Retrieval Systems in Non-English Queries
Chapter 30
John D. D’Ambra, Nina Mistillis
This chapter considers the change in information seeking behaviour of tourists as a result of the increased use of the World Wide Web as an... Sample PDF
Web Information Resources Vis-à-Vis Traditional Information Services
About the Contributors