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12th International Workshop on Database and Expert Systems Applications

3-7 Sept. 2001

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Displaying Results 1 - 25 of 148
  • DEXA 2001 [front matter]

    Publication Year: 2001, Page(s):i - xx
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    Freely Available from IEEE
  • A comparative analysis of web-based collaborative systems

    Publication Year: 2001, Page(s):496 - 500
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB) | HTML iconHTML

    E-collaboration and collaborative systems bring geographically dispersed teams together, supporting communication, coordination and cooperation. In this paper we review forty-four products and research prototypes that offer collaborative services. The findings of our survey provide a list of the basic collaboration services, such as non real-time discussions, email, whiteboard, real-time discussio... View full abstract»

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  • Dynamic multi-signatures for secure autonomous agents

    Publication Year: 2001, Page(s):587 - 591
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (483 KB) | HTML iconHTML

    Mobile agents are an appealing technology for distributed applications in open networks. A major problem is the asymmetric relation of mobile agents and their execution environment in matters of security. The security concerns are even greater in the case where agents are executed autonomously in multiple hosts, and in particular when the environment is hostile. The proposed solutions in the liter... View full abstract»

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  • Author index

    Publication Year: 2001, Page(s):967 - 970
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    Freely Available from IEEE
  • Feature weighting and instance selection for collaborative filtering

    Publication Year: 2001, Page(s):285 - 290
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB) | HTML iconHTML

    Collaborative filtering uses a database about consumers' preferences to make personal product recommendations and is achieving widespread success in e-commerce nowadays. In this paper we present several feature-weighting methods to improve the accuracy of collaborative filtering algorithms. Furthermore, we propose a method to reduce the training data set by selecting only highly relevant instances... View full abstract»

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  • Legal information access on the Web. A project for an information system model

    Publication Year: 2001, Page(s):778 - 783
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB) | HTML iconHTML

    Due to the developments in informatics and telematics technologies, the documentary material needed for the legal theorist and practitioner is available on the Web, but there is a complex process for modelling and standardizing data yet to be done. Some proposals related to these problems in particular, to legal information organisation and diffusion on the Web are outlined View full abstract»

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  • Statistical analysis of Web documents: a proposal and a case study

    Publication Year: 2001, Page(s):275 - 281
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB) | HTML iconHTML

    The quality metrics so far adopted for Web document analysis suffer from a serious limitation: they take into account single documents, disregarding the specific context the Web pages belong to. As a formal tool suitable to overcome such a limitation, we introduce new metrics which take as input sets of Web pages and return statistical distributions about the number of paragraphs of text, the area... View full abstract»

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  • Towards electronic contract performance

    Publication Year: 2001, Page(s):771 - 777
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB) | HTML iconHTML

    An increasing volume of research in e-commerce is concerned with the development of tools and environments to support various aspects of business-to-business electronic contract formation and performance. This paper is mainly concerned with the latter and takes up the suggestion that automated execution of an agreement between (at least) two parties can be effected through a central control mechan... View full abstract»

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  • Robust frame-based watermarking for digital video

    Publication Year: 2001, Page(s):825 - 829
    Cited by:  Papers (2)  |  Patents (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    Opening digital archives to the access of a large and spread variety of parties appears to depend on the development of more effective solutions for the transfer of rights, the protection of intellectual property and the access to digital libraries. A possible solution envisages the use of digital watermarking of multimedia works. In this paper a watermarking algorithm originally conceived for sti... View full abstract»

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  • MEME: an adaptive email-based information sharing system for educational institutions

    Publication Year: 2001, Page(s):449 - 453
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB) | HTML iconHTML

    Messaging systems are essential for circulating information within an organization, yet currently the e-mail-based exchange of information does not take advantage of technologies that could change several aspects of the way people share information and knowledge. In this paper we discuss functionality and technologies of an adaptive messaging system. Potentially, messaging systems could be utilize... View full abstract»

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  • Topic maps - an enabling technology for knowledge management

    Publication Year: 2001, Page(s):472 - 476
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    In this paper, we show how topic maps (semantically structured, self-describing link networks standardized by ISO/IEC 13250) can be used to represent superimposed information as well as domain ontologies - two established approaches to knowledge management systems. Superimposed information enriches explicit knowledge resources for purposes like retrieval or connection, without modifying this base ... View full abstract»

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  • Document categorization and retrieval using semantic microfeatures and growing cell structures

    Publication Year: 2001, Page(s):270 - 274
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB) | HTML iconHTML

    Presents an approach to document categorization and retrieval using growing cell structures. Semantic microfeatures together with other information are adopted for document representation. The main advantage over traditional information retrieval systems which adopt index terms to index and retrieve documents is that the new approach considers the semantic relationships among documents. The paper ... View full abstract»

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  • The ideal audience and artificial intelligence and law

    Publication Year: 2001, Page(s):763 - 767
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB) | HTML iconHTML

    The author reflects on the notion of an ideal audience and its implications for artificial intelligence (AI) and law. After introducing the notion, he considers how it can be used as an analytical tool for thinking about AI and law systems and the practice of AI and law View full abstract»

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  • An architecture for location dependent query processing

    Publication Year: 2001, Page(s):549 - 555
    Cited by:  Papers (11)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB) | HTML iconHTML

    As the mobility of people increases, anytime, anywhere computing has become a must. With the advances in wireless communications, the geographical position of the mobile user can be estimated accurately enough to be used to access data dependent on it. Location awareness then enables new kinds of services specific to localized information. While this provides great flexibility for the end user, it... View full abstract»

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  • The TAIM intelligent visual database

    Publication Year: 2001, Page(s):820 - 824
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    Intelligent multimedia provides a basis for designing databases with agents, multimedia and intelligent business objects. The computing techniques, the Morph Gentzen deductive system and its models, are applied to design an active multimedia database. The computing model is based on a novel competitive learning with agent multiplayer game tree planning. Intelligent visual computing paradigms are a... View full abstract»

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  • Business-process oriented delivery of knowledge through domain ontologies

    Publication Year: 2001, Page(s):442 - 446
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB) | HTML iconHTML

    We briefly promote the idea of possible IT support business-process oriented knowledge management (BPOKM) and sketch some basic approaches to achieve this goal. Then we describe the DECOR (Delivery of context-sensitive organisational knowledge) project, which develops, tests, and consolidates methods and tools for BPOKM. In the DECOR project, three end-user environments serve as test-beds for vali... View full abstract»

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  • Measuring knowledge with workflow management systems

    Publication Year: 2001, Page(s):467 - 471
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    Expert knowledge is captured in process design. In organisations, knowledge becomes embedded in routines, processes and practices as well as norms, and can be evaluated by the decisions or actions to which it leads, e.g. measurable efficiencies, speed or quality gains. Knowledge develops over time, through experience that includes what we absorb from courses, books and mentors, as well as from inf... View full abstract»

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  • A power-aware technique to manage real-time database transactions in mobile ad-hoc networks

    Publication Year: 2001, Page(s):570 - 574
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    A mobile ad-hoc network (AMNET) is a collection of wireless autonomous mobile hosts which are free to move randomly, thus forming a temporary network without any fixed backbone infrastructure. AMNET is typically used in battlefields and disaster recovery situations where temporary network connectivity is required Techniques that manage database transactions in AMNET need to address additional issu... View full abstract»

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  • SIM: a working example of an e-government service infrastructure for mountain communities

    Publication Year: 2001, Page(s):407 - 411
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    We present an information technology (IT) based infrastructure providing e-government services to. people living in mountain areas. Such a system, SIM -"Sistema Informativo della Montagna", provides to citizens in these areas services in the cadastral sector in the labour and pension sectors, and services related to public registries for personal data. SIM is an example of a general distributed IT... View full abstract»

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  • Web document summarisation: a task-oriented evaluation

    Publication Year: 2001, Page(s):951 - 955
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    We present a query-biased summarisation interface for Web searching. The summarisation system has been specifically developed to act as a component in existing Web search interfaces. The summaries allow the user to more effectively assess the content of Web pages. We also present an experimental investigation of this approach. Our experimental results shows the system appears to be more useful and... View full abstract»

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  • Using XML in a web-oriented information system

    Publication Year: 2001, Page(s):217 - 221
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    In this paper an information system WEBIS is be described that updates its data using specific web-pages. The problem that the structure of HTML-pages can be unexpectedly restructured has been solved by using a controlled transformation into XML and storing XML-documents for data exploitation into an XML repository View full abstract»

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  • A fuzzy admission control scheme for high-speed networks

    Publication Year: 2001, Page(s):157 - 161
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    In high-speed networks, the traffic control design becomes an important challenge, because of the diverse services support and the need for an efficient network resource engineering. To cope with rapidly changing network conditions and bursty traffic, the traffic control methods must be adaptive, flexible, and intelligent for efficient network management. Use of intelligent methods based on fuzzy ... View full abstract»

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  • Rating the interest of rules induced from data and within texts

    Publication Year: 2001, Page(s):265 - 269
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    Presents an application based on an evaluation of the interestingness of the rules induced from examples using inductive text mining (ITM). The better-known deductive text mining is called information extraction, and amounts to finding instances of a predefined pattern in a set of texts. ITM looks for unknown patterns or rules to discover inside a set of texts. We mainly discuss two of the problem... View full abstract»

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  • Information technology improves most of the democratic voting processes

    Publication Year: 2001, Page(s):388 - 393
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB) | HTML iconHTML

    Voting is the basis of democratic systems. Information technology has offered significant advantages and facilities to improve the quality of many social interactions and economical activities within modern societies. But the potential of IT to help change the voting process has not yet been fulfilled The paper analyses the voting process and identifies how information technology may improve the q... View full abstract»

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  • Public key certification providers and e-government assurance agencies. An appraisal of trust on the Internet

    Publication Year: 2001, Page(s):345 - 349
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    Because both e-government and e-commerce operate via the internet, they appear at first sight to bear a considerable resemblance to each other. On closer inspection of the differences in the functions required of applications developed for use in one or other area, however, the superficial similarities quickly fade. The paper shows that these differences are fundamental and may even require the us... View full abstract»

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