By Topic

Web Congress, 2005. LA-WEB 2005. Third Latin American

Date Oct. 31 2005-Nov. 2 2005

Filter Results

Displaying Results 1 - 25 of 50
  • Third Latin American Web Congress - Cover

    Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (574 KB)  
    Freely Available from IEEE
  • Proceedings. Third Latin American Web Congress (LA-WEB 2005)

    Save to Project icon | Request Permissions | PDF file iconPDF (62 KB)  
    Freely Available from IEEE
  • Third Latin American Web Congress - Copyright Page

    Page(s): iv
    Save to Project icon | Request Permissions | PDF file iconPDF (52 KB)  
    Freely Available from IEEE
  • Third Latin American Web Congress - Table of contents

    Page(s): v - vii
    Save to Project icon | Request Permissions | PDF file iconPDF (53 KB)  
    Freely Available from IEEE
  • Foreword

    Page(s): viii
    Save to Project icon | Request Permissions | PDF file iconPDF (31 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • Preface

    Page(s): ix
    Save to Project icon | Request Permissions | PDF file iconPDF (33 KB) |  | HTML iconHTML  
    Freely Available from IEEE
  • Steering and Program Committees

    Page(s): x - xi
    Save to Project icon | Request Permissions | PDF file iconPDF (40 KB)  
    Freely Available from IEEE
  • Additional reviewers

    Page(s): xii
    Save to Project icon | Request Permissions | PDF file iconPDF (33 KB)  
    Freely Available from IEEE
  • Organization

    Page(s): xiii
    Save to Project icon | Request Permissions | PDF file iconPDF (33 KB)  
    Freely Available from IEEE
  • Social dynamics in cyberspace

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (30 KB)  

    Summary form only given. The social dynamics of individuals connected through the Internet is relevant to issues of productivity, viral marketing and the sorting out of useful ideas from the general chatter of a community. This talk will first describe a mechanism for automatically identifying communities of practice from email traffic within organizations as well as patterns in document access. Equally important is how information spreads within communities. This information has recently acquired a new dimension through the phenomenon of collaborative tagging, whereby many users add metadata in the form of keywords to shared content such as bookmarks, photographs and blogs. There are interesting patterns that emerge within these "folksonomies" specifically; we discovered regularities in user activity, tag frequencies, kinds of tags used, and a remarkable stability in the relative proportions of tags within a given url. A dynamical model of collaborative tagging predicts these stable patterns and relates them to imitation and shared knowledge. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Incentive networks

    Save to Project icon | Request Permissions | PDF file iconPDF (43 KB)  
    Freely Available from IEEE
  • Web mining

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (69 KB) |  | HTML iconHTML  

    The Web grows and evolves faster than we would like and expect, imposing scalability and relevance problems to Web search engines. There are three main data types in the Web: content (text, multimedia), structure (links that form a graph) and Web usage (transactions from Web logs). We emphasize the last type of data, in particular a new subfield called query mining. Server logs of search engines store traces of queries submitted by users, which include queries themselves along with Web pages selected in their answers. Query mining is based in the fact that user queries in search engines and Web sites give valuable information on the interests of people. In addition, clicks after queries relate those interests to actual content. The framework is based on a new vectorial representation of query traces which allows to treat them similarly to documents in traditional information retrieval systems. Also, we consider the problem of reducing the bias in the selections caused by the particular answer rankings computed by the search engine. We show the application of the clustering framework to two problems: relevance ranking boosting and query recommendation. Finally, we show with experiments the effectiveness of our approach. The same ideas can be applied to advertising campaigns in search engines and the automatic generation of a pseudo-ontology for queries. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • How to "Webby-ize" your Web site - factors in award-winning design

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (51 KB) |  | HTML iconHTML  

    The Webby Awards® are the leading international awards honoring excellence in Web design, functionality and creativity (http://www.webbyawards.com). More than just a popularity contest, the Webbys recognize outstanding achievement in content, structure and navigation, visual design, functionality, interactivity, and overall experience. The International Academy of Digital Arts and Sciences (IADAS), the organization that oversees the award process, has given the Webby judges a framework for evaluating a Web site that is comprehensive and independent of the personal preference issues that are ordinarily associated with Web site evaluation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reverse engineering of Web pages based on derivations and transformations

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (616 KB) |  | HTML iconHTML  

    The final user interface of an information system could be reverse engineered according to a model-driven engineering perspective to multiple levels of abstraction, either independently of each other or simultaneously depending on the designer's goals: concrete user interface (which is independent of the user interface toolkit), abstract user interface (which is independent of any interaction modality), and "task and concepts" (which is independent of any particular implementation). To support the user interface reverse engineering from the code level to any model level, a set of derivation rules have been implemented in ReversiXML. To support the user interface reverse engineering from any model to any other level, graph grammars have been implemented in TransformiXML. A graph grammar consists of graph transformation rules, called productions, that accept as input a graph representation of the user interface to be reengineered, apply the transformation, and obtain a result that can be further exploited to re-create a new user interface. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model-driven reengineering approach to Web site personalization

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6376 KB) |  | HTML iconHTML  

    Currently, Web-based applications without personalization and developed with "ad hoc" practices are requiring substantial evolution. Particularly, e-commerce applications are implicitly bound to a fully customisable fashion, attending individual users or group of users needs. Hence, personalization is a leader performance feature of today's Web applications to capture users' attention. In this paper, we introduce a model-driven reengineering approach based on the object-oriented hypermedia design method (OOHDM) to personalize existent Web applications. We illustrate the proposal through a real non-personalized case corresponding to an international oil corporation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling federations of Web applications with WAM

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (568 KB) |  | HTML iconHTML  

    One aspect of modern Web technology is that it is not only employed to connect users to sites, but to an increasing degree to bring together applications, as e.g. with the help of Web services. Particularly, these applications can reside under the control of different organizations. In this case, the Web is actually used as a means for establishing federations between the organizations behind their technical systems. This enables creating integrated business processes and thus facilitates seamless cooperation between multiple businesses. Naturally, the construction of such solutions raises specific concerns that go beyond traditional approaches, including questions of access control, identity management and evolution in the context of federation. Emerging federation specifications like WS-federation or liberty alliance are now offering standardized protocols as solutions to some of these problems. Along with the technological base, the process of establishing and operating federations also requires dedicated models to plan and describe the systems on an architectural level. Conventional approaches to modeling software in general and Web applications in particular do not specifically focus on federated architectures. For that purpose, we propose the Webcomposition architecture model (WAM), a modeling formalism based on our experience on developing federations of Web applications as well as the concepts found in recent federation specifications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A model driven method for the integration of Web applications

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (360 KB) |  | HTML iconHTML  

    Currently, the software industry is demanding the construction of Web applications that are built integrating functionality from third party systems. Web engineering methods are not properly dealing with this open strategy. Instead, they only provide methodological support for the implementation of isolated Web applications. The solutions that are based on a specific technology do not solve the integration problem at all. To provide an adequate solution we have to tackle with the integration issue at the problem space, avoiding ad-hoc solutions. We should provide a set of mechanisms that allow to model integration at a high level of abstraction, independently of the underlying technology in which these services are provided. Following the MDA principles, we present a model driven approach that makes a clear separation of concerns in the Web development process. Our method includes a step where the integration issue is introduced as a new concern. In this step we introduce mechanisms that allow us to specify and include external services (by means of a services model). Moreover, these external services can take part in the specification of a business process through the business process model. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • .Net approach to run-time component integration

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (176 KB) |  | HTML iconHTML  

    This work is related to the area of component-based software development. We intend to automate a component integration process as a support for run-time adjustments of applications, when the environment involves highly dynamic changes of requirements. This implies to evaluate components against a given set of requirements. We propose a framework for such process and consider related concepts like assessment and adaptation. Assessment is based on meta-data added to components, involving assertions, and usage protocols. Meta-data is evaluated with a technique based on abstract syntax trees. We also report on a prototype developed on the .Net technology to implement the proposed assessment and adaptation procedures which allowed us to gain understanding about the complexity and effectiveness of our model. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Web development evolution: the assimilation of Web engineering security

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (144 KB) |  | HTML iconHTML  

    In today's e-commerce environment, information is an incredibly valuable asset. Surveys indicate that companies are suffering staggering financial losses due to Web security issues. Analyzing the underlying causes of these security breaches shows that a significant proportion of them are caused by straightforward design errors in systems and not by failures in security mechanisms. There is significant research into security mechanisms but there is little research into the integration of these into software design processes, even those processes specifically designed for Web Engineering. Security should be designed into the application development process upfront through an independent flexible methodology that contains customizable components. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Supporting Web-based scholarship through index cards and annotations

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (352 KB) |  | HTML iconHTML  

    We have developed "Cronos", an environment that supports personal and public annotations on digital documents. Users of Cronos can also generate, view and share index cards that support scholarly work. A study of its initial use shows that Cronos has potential to effectively support research and scholarship conducted directly on Web documents. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Toward a domain-independent semantic model for context-aware computing

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (216 KB) |  | HTML iconHTML  

    Context-aware systems assist people's everyday tasks by adapting their behavior based on context information gathered from instrumented environments. Context is any relevant information describing entities in a user-computer interaction. A pertinent issue to developing such systems is how to represent context. High-level context models prevent the development of ad hoc and limited schemes for context management. Moreover, the more formal a context model is, the better is the ability for reasoning about context. This paper presents our work toward a domain-independent ontology-based context model, which provides a set of general classes, properties, and relations so lower ontologies can import them for particular domains. We show how this context model can be extended in a ubiquitous e-learning scenario on campus. Built upon our model, we also present a configurable service infrastructure for the prototyping of semantic context-aware systems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Optimized index structures for querying RDF from the Web

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (208 KB) |  | HTML iconHTML  

    Storing and querying resource description framework (RDF) data is one of the basic tasks within any semantic Web application. A number of storage systems provide assistance for this task. However, current RDF database systems do not use optimized indexes, which results in a poor performance behavior for querying RDF. In this paper we describe optimized index structures for RDF, show how to process and evaluate queries based on the index structure, describe a lightweight adaptable implementation in Java, and provide a performance comparison with existing RDF databases. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Semantic resources to support Web services selection, mediation, and composition

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (168 KB) |  | HTML iconHTML  

    Adding semantics to Web Services enable the automatic selection, mediation and composition of services across heterogeneous users and domains. The semantic Web has the potential to provide the Web services infrastructure with the information it needs through formal languages and ontologies for reasoning about service description, meaning of exchanged messages, etc. In this paper, we analyze several current approaches that implement semantic Web services by focusing on activities they are required to perform. These activities involve discovery, selection, mediation, and composition. We particularly analyze and compare how the approaches implement these activities by using semantics resources. We present a framework for comparison, which is used to highlight strengths and weaknesses as well as to detect topics for further research. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Architectures for Web services access from mobile devices

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (512 KB) |  | HTML iconHTML  

    The success of Web services, an open Internet standards based technology, opens the door to the construction of business applications in the distributed computing world. As Web services are based on open standards, it lets the integration of different kinds of software components, including the wireless and mobile applications. However, the Post PC World, dominated by mobile devices, is not completely ready to Web Service accesss, due to memory and processing constraints. Specific architectures for an easy and clear Web Services integration are required. This article introduces the main aspects related with Web services access from mobile devices. Two proposals are presented for high and low end mobile devices, using Java 2 Platform, Micro Edition (J2ME) Web services API (WSA) and short messaging service (SMS) respectively, which define a specific architecture for each case. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contextual ontologies for the semantic Web - an enabling technology

    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (160 KB) |  | HTML iconHTML  

    To realize the goals of the semantic Web, there is a need of working on approaches focused on the machine processing semantics and approaches to systematically define conceptual models about data semantics. Ontologies are a primary means to deploy the semantic Web vision, but managing the context-dependent semantics remains an open problem. In this paper we discuss the role of contexts on the semantic Web and, present a contextual ontology modeling language called C-OML. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.