Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99

3-3 Sept. 1999

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  • Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99

    Publication Year: 1999
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    Freely Available from IEEE
  • Beyond current technology: the perspective of three RC GIS projects panel discussion

    Publication Year: 1999, Page(s): 510
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    Freely Available from IEEE
  • Electronic copyright management systems: requirements, players and technologies

    Publication Year: 1999, Page(s):896 - 898
    Cited by:  Papers (4)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (26 KB)

    The large diffusion of multimedia products distributed through CD-ROMs (off-line) and the Internet (on-line) is raising many concerns regarding the preservation of authors' rights. On the other hand, these new publication methods appear to be very attractive for increasing business opportunities. The problem of electronic management of copyright has thus become very important and many projects are... View full abstract»

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  • Author index

    Publication Year: 1999, Page(s):933 - 937
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    Freely Available from IEEE
  • An XML-based, 3-tier scheme for integrating heterogeneous information sources to the WWW

    Publication Year: 1999, Page(s):706 - 710
    Cited by:  Papers (5)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (84 KB)

    The phenomenal growth that the WWW currently experiences necessitates the integration of various types of information sources to its platform. We present an open, extensible multi-agent architecture, which is based on standards like XML, for the efficient retrieval of information from RDBMSs and HTML document collections. We also specify a series of protocols for achieving the synergy between a nu... View full abstract»

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  • XViews: XML views of relational schemas

    Publication Year: 1999, Page(s):700 - 705
    Cited by:  Papers (5)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    The Mediation of Information using XML (MIX) project is a joint effort between the the San Diego Supercomputer Center (SDSC) and the Database Lab at the University of California, San Diego where we are investigating the use of XML as the medium for information modeling and information interchange among heterogeneous information sources. Relational databases represent an important type of informati... View full abstract»

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  • Task rescheduling in multi-agent manufacturing

    Publication Year: 1999, Page(s):689 - 694
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB)

    We present a model for task rescheduling in multi-agent manufacturing that is geared toward maximising system efficiency and reliability in an environment with predictable failure patterns. We describe a distributed manufacturing system architecture (http://hms.ifw.uni-hannover.de/public/overview.html) to illustrate the merits of rescheduling. We also develop an action redistribution framework bas... View full abstract»

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  • A study on utilizing OCR technology in building text database

    Publication Year: 1999, Page(s):582 - 586
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB)

    Optical character recognition (OCR) might be the most plausible method in building databases from printed documents. The paper describes the points to be considered when one selects an OCR system in order to build a database. Based on our experiments on four commercial OCR systems, we chose one that shows the highest recognition rate to build an OCR text database. The character recognition rate wa... View full abstract»

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  • An efficient multicast delivery scheme to support Mobile IP

    Publication Year: 1999, Page(s):683 - 688
    Cited by:  Patents (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    Once mobile nodes move into another network, Mobile IP is employed for the remaining unicast services. However, multicast services become unavailable because of topology changes. A multicast scheme is proposed based on our Domain-based Mobile IP (K.D. Wu et al., 1998). Multicast services are divided into two types: Intra-domain service and Inter-domain service. The article identifies mobile nodes ... View full abstract»

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  • SIM-a system for semi-automatic indexing of multilingual documents

    Publication Year: 1999, Page(s):577 - 581
    Cited by:  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (48 KB)

    With the growing significance of digital libraries and the Internet, more and more electronic texts become accessible to a wide and geographically disperse public. This requires adequate tools to facilitate indexing, storage, and retrieval of documents written in different languages. We present a method for semi-automatic indexing of electronic documents and construction of a multilingual thesauru... View full abstract»

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  • Protocol for pseudo-active replication in wide-area networks

    Publication Year: 1999, Page(s):678 - 682
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    We discuss how to replicate a server in order to obtain fault tolerant services. In the active replication, all the requests from a client are performed by all the server replicas in the same order. The replicas are rather placed on heterogeneous computers interconnected in a wide area network: (WAN), e.g. the Internet, where each communication channel has different message transmission delay and ... View full abstract»

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  • A statistical refinement method for word shape token querying of document images

    Publication Year: 1999, Page(s):572 - 576
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (36 KB)

    Word Shape Tokens (WSTs) are tokens used to represent words based on the overall shape or contour of a word as it appears in printed text. A character shape code (CSC) mapping function is used to aggregate similarly shaped letters such as “g” and “y” into one single code to represent those letters. The rationale behind this is that it is far easier and more accurate to map ... View full abstract»

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  • SoftDock: a distributed collaborative platform for model-based software development

    Publication Year: 1999, Page(s):672 - 676
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (36 KB)

    The paper describes our SoftDock system, which is a distributed model management system to support collaborative software development. SoftDock leverages the team development, tool interoperability, and model continuity across development lifecycle. It supports Unified Modeling Language (UML) to specify software models, and maintains the model information with UML eXchange Format (UXF), which is a... View full abstract»

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  • Document comparison with a weighted topic hierarchy

    Publication Year: 1999, Page(s):566 - 570
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    A method of document comparison based on a hierarchical dictionary of topics (concepts) is described. The hierarchical links in the dictionary are supplied with the weights that are used for detecting the main topics of a document and for determining the similarity between two documents. The method allows for the comparison of documents that do not share any words literally but do share concepts, ... View full abstract»

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  • Integration of diverse hypermedia link servers using request routing

    Publication Year: 1999, Page(s):667 - 671
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (64 KB)

    Hypermedia link servers are a powerful infrastructure component for creation and delivery of network based information applications. The Distributed Link Service is an established design for a link service on the Internet using the WWW infrastructure and has been exercised in a number of projects. We investigate the provision of such a link service operating over multiple and disparate link server... View full abstract»

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  • Document analysis techniques for the infinite memory multifunction machine

    Publication Year: 1999, Page(s):561 - 565
    Cited by:  Papers (3)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (32 KB)

    A system that saves a digital copy of every document that users copy, print, or fax, without asking the user, has recently been proposed. Referred to as the Infinite Memory Multifunction Machine (IM 3), this system solves most of the problem of lost documents. However, because of the indiscriminate way it captures data, it is important that users have easy-to-use retrieval tools. Two do... View full abstract»

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  • Agent-oriented flexible multimedia system considering organization and QoS functions

    Publication Year: 1999, Page(s):662 - 666
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A distributed multimedia system which not only integrates various multimedia information distributed over computer networks but also provides information in accordance with user requirements during real time multimedia communication, must guarantee a requested quality of service (QoS) even though the computer and network resources change dynamically or statically. We have proposed a flexible multi... View full abstract»

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  • Non-repudiation in an agent-based electronic commerce system

    Publication Year: 1999, Page(s):864 - 868
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    ABECOS is an agent-based e-commerce system under development at the Nanyang Technological University. A key factor in making this system usable in practice is strict security control. One aspect of security is the provision of non-repudiation services. As protocols for non-repudiation have focused on message non-repudiation, its adaptation to afford non-repudiation in a communication session for t... View full abstract»

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  • Multimedia prefetching strategy for news-on-demand applications

    Publication Year: 1999, Page(s):24 - 28
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    In video databases, a video document has two abstractions. The high level abstraction corresponds to the view in which the contents of that video document are seen by end users. And the low level abstraction corresponds to the physical organization of that video document. We propose a novel prefetching strategy that merges the two views of a video document to trigger prefetching at the video serve... View full abstract»

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  • Towards a model for spatio-temporal schema selection

    Publication Year: 1999, Page(s):434 - 440
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (60 KB)

    Schema versioning provides a mechanism for handling change in the structure of database systems and has been investigated widely, both in the context of static and temporal databases. With the growing interest in spatial and spatio-temporal data as well as the mechanisms for holding such data, the spatial context within which data is formatted also becomes an issue. This paper presents a generalis... View full abstract»

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  • Document classification using layout analysis

    Publication Year: 1999, Page(s):556 - 560
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    This paper describes methods for document image classification at the spatial layout level. The goal is to develop fast algorithms for initial document type classification without OCR, which can then be verified using more elaborate methods based on more detailed geometric and syntactic models. A novel feature set called interval encoding is introduced to capture elements of spatial layout. This f... View full abstract»

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  • Multidimensional access to European environmental data

    Publication Year: 1999, Page(s):655 - 659
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    Catalogues have been an indispensable tool to locate books in libraries for centuries. Their equivalent in our networked world are catalogue systems which facilitate search and retrieval especially on the Web. We explore the requirements and their technical solutions to support search and retrieval according to multiple dimensions in Web based catalogue systems. We show how components that address... View full abstract»

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  • Making space for time: issues in space-time data representation

    Publication Year: 1999, Page(s):404 - 408
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (40 KB)

    Even with much activity over the past decade (1989-99), including organized efforts on both sides of the Atlantic, the representation of both space and time in digital databases is still problematic, and functional space-time systems have not gone beyond the limited prototype stage. Why is this the case? Why did it take twenty years from the first GIS for the representation and analysis in the tem... View full abstract»

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  • TeleZone [collaborative architecture experiment]

    Publication Year: 1999, Page(s):276 - 278
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16 KB)

    In a process of democratic self-organization and collaborative planning, an experimental lab situation for trend-setting urban structures and architectures is created at the Ars Electronica Center and on the TeleZone Website. A robot at the Ars Electronica Center acts as “interface” between real and virtual space. Representing the user, it arranges and sticks together the building bloc... View full abstract»

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  • Multi-party fair exchange with an off-line trusted neutral party

    Publication Year: 1999, Page(s):858 - 862
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    Recently developed cryptographic techniques make it possible to construct fair exchange protocols with an off-line trusted third party (TTP). The technique is referred to as a verifiable encryption scheme (VES) and proves that a ciphertext is the result of the encryption of a specified value without revealing this value. In this paper we apply the technique to multi-party fair exchange (MPFE) prot... View full abstract»

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