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Proceedings of the IEEE/LEOS 3rd International Conference on Numerical Simulation of Semiconductor Optoelectronic Devices (IEEE Cat. No.03EX726)

10-12 Nov. 2003

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Displaying Results 1 - 25 of 38
  • On the evolution of clusters of near-duplicate Web pages

    Publication Year: 2003, Page(s):37 - 45
    Cited by:  Papers (23)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB) | HTML iconHTML

    We expand on a 1997 study of the amount and distribution of near-duplicate pages on the World Wide Web. We downloaded a set of 150 million Web pages on a weekly basis over the span of 11 weeks. We then determined which of these pages are near-duplicates of one another, and tracked how clusters of near-duplicate documents evolved over time. We found that 29.2% of all Web pages are very similar to o... View full abstract»

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  • Storing RDF as a graph

    Publication Year: 2003, Page(s):27 - 36
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB) | HTML iconHTML

    RDF is the first W3C standard for enriching information resources of the Web with detailed meta data. The semantics of RDF data is defined using a RDF schema. The most expressive language for querying RDF is RQL, which enables querying of semantics. In order to support RQL, a RDF storage system has to map the RDF graph model onto its storage structure. Several storage systems for RDF data have bee... View full abstract»

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  • Towards an information filtering system in the Web integrating collaborative and content based techniques

    Publication Year: 2003, Page(s):222 - 225
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    The amount of information currently available, the different media and presentation formats joined with the little time availability of the researchers and people in general, make necessary the implementation of automated tools selecting and evaluating information, aiming at not only optimizing resources but also obtaining useful and personalized results that optimize the daily work of its users. ... View full abstract»

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  • A utility-oriented hyperlink analysis model for the Web

    Publication Year: 2003, Page(s):123 - 131
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (828 KB) | HTML iconHTML

    The analysis of hyperlink structure on the Web has been employed for detecting high quality documents. Quality may correspond to the authority of a document, but could also correspond to its utility, that is how well it enables a user to browse its vicinity. We present a hyperlink analysis model, based on modelling the Web graph as an absorbing Markov chain, that can be employed for both authority... View full abstract»

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  • Finding buying guides with a Web carnivore

    Publication Year: 2003, Page(s):84 - 92
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (303 KB) | HTML iconHTML

    Research on buying behavior indicates that buying guides perform an important role in the overall buying process. However, while the Web contains many buying guides, finding those guides is difficult to impossible for the average consumer. Web search engines typically index many buying guides on many topics, but simple queries do not often return these results. Given this, we built a Web carnivore... View full abstract»

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  • Collaborative learning and creative writing

    Publication Year: 2003, Page(s):180 - 186
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (289 KB) | HTML iconHTML

    CSCL software tools must provide support for group work and should be based on a collaborative learning technique. The PBL based CCCuento tool is introduced here. It is intended to support apprentices groups in the collaborative creation of stories in order to improve language use and development of writing skills. The tool follows a model, which includes several positive interdependencies and is ... View full abstract»

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  • Extracting knowledge from association relationships to build navigational models

    Publication Year: 2003, Page(s):2 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (421 KB) | HTML iconHTML

    We analyze how the semantics of association relationships in OO conceptual modeling can help to build navigational models for Web applications. The work has been developed in the context of OOWS (a model-driven development method for building Web applications). We study some structural and behavioral properties of those conceptual abstractions in order to extract knowledge to be applied in the con... View full abstract»

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  • Web accessibility, mobility and findability

    Publication Year: 2003, Page(s):239 - 240
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    This paper addresses the issues of accessibility, mobility and findability as appropriate to a discussion of Web site or Web page interface usability. The goal of this paper is to emphasize the importance of these factors while providing attendees with sufficient vocabulary and conceptual knowledge to make appropriate design decisions. View full abstract»

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  • Syntactic similarity of Web documents

    Publication Year: 2003, Page(s):194 - 200
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (302 KB) | HTML iconHTML

    We present and compare two methods for evaluating the syntactic similarity between documents. The first method uses the Patricia tree, constructed from the original document, and the similarity is computed searching the text of each candidate document in the tree. The second method uses shingles concept to obtain the similarity measure for every document pairs, and each shingle from the original d... View full abstract»

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  • Policy and state based secure wrapper and its application to mobile agents

    Publication Year: 2003, Page(s):14 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (367 KB) | HTML iconHTML

    Execution process in modern Web applications is usually represented as a partially ordered sequence of basic actions issued by a client (login, buy, exit, etc.; the login action usually precedes purchasing). Based on these actions, a finite automaton of fine-grained authorization checks, may be specified in a separate layer that is easily configurable for security needs of a particular application... View full abstract»

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  • SharpSpider: spidering the Web through Web services

    Publication Year: 2003, Page(s):219 - 221
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (207 KB) | HTML iconHTML

    Web search engines have become an indispensable utility for Internet users. In the near future, however, Web search engines will not only be expected to provide quality search results, but also to enable applications to search and exploit their index repositories directly. We present here SharpSpider, a distributed, C# spider designed to address the issues of scalability, decentralisation and cont... View full abstract»

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  • Finding related hubs and authorities

    Publication Year: 2003, Page(s):214 - 215
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (231 KB) | HTML iconHTML

    A new algorithm for finding hubs (and authorities) related to a specific Web page is presented. Various aspects have been investigated in this direction, like extensions of the HITS algorithm or modifications to the pagerank algorithm. Our focus is mainly oriented on computing hub scores, but the formulas for authority scores are almost always analogous. View full abstract»

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  • Estimating the development effort of Web projects in Chile

    Publication Year: 2003, Page(s):114 - 122
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (253 KB) | HTML iconHTML

    We present a method to fast estimate the development effort of Web-based information systems in Chile. The method, called Chilean Web application development effort estimation (CWADEE), addresses a necessity to get effort estimations in a short period of 24 to 72 hours using limited information. In contrast with other existing methods, CWADEE uses raw historical information about development capab... View full abstract»

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  • Cooperative crawling

    Publication Year: 2003, Page(s):209 - 211
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (193 KB) | HTML iconHTML

    Web crawler design presents many different challenges: architecture, strategies, performance and more. One of the most important research topics concerns improving the selection of "interesting" Web pages (for the user), according to importance metrics. Another relevant point is content freshness, i.e. maintaining freshness and consistency of temporary stored copies. For this, the crawler periodic... View full abstract»

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  • On the image content of the Chilean Web

    Publication Year: 2003, Page(s):72 - 83
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB) | HTML iconHTML

    We perform a study of the image contents of the Chilean Web (.cl domain) using automatic feature extraction, content-based analysis and face detection algorithms. In an automated process we examine all .cl Websites and download a large number of the images available (approx. 83,000). Then we extract several visual features (color, texture, shape, etc.) and we perform face detection using novel alg... View full abstract»

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  • The best trail algorithm for assisted navigation of Web sites

    Publication Year: 2003, Page(s):166 - 178
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB) | HTML iconHTML

    We present an algorithm called the best trail algorithm, which helps solve the hypertext navigation problem by automating the construction of memex-like trails through the corpus. The algorithm performs a probabilistic best-first expansion of a set of navigation trees to find relevant and compact trails. We describe the implementation of the algorithm, scoring methods for trails, filtering algorit... View full abstract»

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  • Network and web services security concepts using Java

    Publication Year: 2003, Page(s): 238
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (154 KB) | HTML iconHTML

    First Page of the Article
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  • Conceptual-level log analysis for the evaluation of Web application quality

    Publication Year: 2003, Page(s):46 - 57
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    So far, conceptual modeling of Web applications has been used primarily in the upper part of the life cycle, as a driver for system analysis. Little attention has been put on exploiting the conceptual models developed during analysis for application evaluation, maintenance and evolution. We illustrates an approach for integrating the use of conceptual models in the lower part of the application li... View full abstract»

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  • Methodological aspects in designing Web-based collaborative systems

    Publication Year: 2003, Page(s):226 - 228
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB) | HTML iconHTML

    We present methodological aspects related with the development of Web-based collaboration systems in design and education. Collaboration is highlighted as the fundamental aspect in the development of this kind of systems; it consists in a constructive and social process that is modeled in terms of protocols, which capture key acts of conversations involved in team working. View full abstract»

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  • Multi-tier architecture for Web search engines

    Publication Year: 2003, Page(s):132 - 143
    Cited by:  Papers (9)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (954 KB) | HTML iconHTML

    We describe a novel multitier architecture far a search engine. Based on observations from query log analysis as well as properties of a ranking formula, we derive a method to tier documents in a search engine. This allows for increased performance while keeping the order of the results returned, and hence relevance, almost "untouched". The architecture and method have been tested large scale on a... View full abstract»

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  • Application modeling for the semantic Web

    Publication Year: 2003, Page(s):93 - 102
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    We present a method for the design and implementation of Web Applications for the semantic Web. Based on the "object oriented hypermedia design method" approach, we used ontology concepts to define an application conceptual model, extending the expressive power of the original method. The navigational model definitions use a query language capable of querying both schema and instances, enabling th... View full abstract»

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  • Does home Internet use influence the academic performance of low-income children? findings from the HomeNetToo project

    Publication Year: 2003, Page(s):187 - 193
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (223 KB) | HTML iconHTML

    Research on the effects of home Internet use on children's academic performance is virtually nonexistent. Although parents believe that having the Internet at home is important to their children's success in school, evidence linking access to success is lacking. In the HomeNetToo project we automatically recorded the actual Internet use of 130 children (mean age=13) from low-income families for 16... View full abstract»

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  • Evolution of the Chilean Web structure composition

    Publication Year: 2003, Page(s):11 - 13
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (371 KB) | HTML iconHTML

    We present the evolution of the structure of the Chilean Web between 2000 and 2002. Our results show that although the Web grows as expected, also a significant part of it disappears. In addition, some components are much more stable than others. We also compare the expected life cycle of a Web site in the structure with the actual real data. View full abstract»

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  • Alternative implementation techniques for Web text visualization

    Publication Year: 2003, Page(s):202 - 204
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    We present an approach for building text visualizations that avoids using plug-ins or clients based on languages like Java. Instead we propose to make the search engine application more aware of the visualization process and use the Web browser standard features to do the rendering work. We demonstrate the ideas with a text visualization metaphor implementation that is part of a search engine. View full abstract»

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  • Structuring information on the Web from below: the case of educational organizations in Chile

    Publication Year: 2003, Page(s):216 - 218
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (202 KB) | HTML iconHTML

    We present an ongoing work to help populate the Web with metadata by structuring and integrating information of organizations at a small scale. This is a natural complement to big scale projects to build the semantic Web infrastructure. We show an implementation for Computer Science departments in Chile, and present current work on educational organizations generalizing previous experience. View full abstract»

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