Proceedings. 6th International Conference on Advanced Systems for Advanced Applications

21-21 April 1999

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  • Proceedings. 6th International Conference on Advanced Systems for Advanced Applications

    Publication Year: 1999
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    Freely Available from IEEE
  • Research and development of advanced database systems for integration of media and user environments

    Publication Year: 1999, Page(s):3 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (23 KB)

    First Page of the Article
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  • Author index

    Publication Year: 1999, Page(s):355 - 356
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    Freely Available from IEEE
  • Development of multi-step filtering processor

    Publication Year: 1999, Page(s):169 - 176
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1424 KB)

    Spatial query processing using a spatial access method (SAM) faces the problem of having to examine a large number of candidate objects during the CPU-time intensive refinement step. This is due to the minimum bounding rectangle (MBR) filter in the first step of query processing which is rough by nature. In order to overcome this problem, the multi-step filtering method that takes a series of spat... View full abstract»

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  • Early separation of filter and refinement steps in spatial query optimization

    Publication Year: 1999, Page(s):161 - 168
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    The spatial query has been processed in two steps, the filter step and the refinement step, due to the large volume and high complexity of the spatial data. However, this approach has been considered only in the query execution phase after completion of the query optimization phase. This paper presents query optimization strategies which take the characteristics of spatial databases into account. ... View full abstract»

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  • Spatial presentation and aggregation of georeferenced data

    Publication Year: 1999, Page(s):153 - 160
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    In this paper, we introduce a method of spatial presentation of georeferenced data in a three-dimensional space. Photographs, Quicktime VRs, videos, and computer graphic renderings provide realistic presentations rich in visual information. We believe, however, there is an issue of visualizing georeferenced data such as attribute data for spatial objects as well as showing the objects themselves. ... View full abstract»

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  • An active replication scheme for mobile data management

    Publication Year: 1999, Page(s):143 - 150
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB)

    A replication scheme determines the number and location of replicas in a distributed system. Traditional static replication schemes do not perform well in a mobile environment since the assumptions of fixed hosts and relatively static access patterns no longer hold. For effective data management in a mobile environment, we propose a dynamic replication scheme which employs user profiles for record... View full abstract»

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  • QEM: a scheduling method for wireless broadcast data

    Publication Year: 1999, Page(s):135 - 142
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    In mobile distributed systems the data on air can be accessed by a large number of clients. This paper describes the way clients access the wireless broadcast data with short latency. We define and analyze the problem of wireless data scheduling and we propose a measure, named QueryDistance (QD), which represents the degree of coherence for the data set accessed by a query. We give a practically u... View full abstract»

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  • Index design for structured documents based on abstraction

    Publication Year: 1999, Page(s):89 - 96
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    HTML has so far been the standard format for delivering information on the World Wide Web. However, automated information processing of these documents for data exchange and interoperability has been difficult. XML, a subset of SGML, has been proposed to be the next standard format, that allows user-defined tags for better describing nested document structures and associated semantics. Operations ... View full abstract»

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  • Real-time transaction management in mobile computing systems

    Publication Year: 1999, Page(s):127 - 134
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    In order to respond to real-time data access requirements of the underlying applications, mobile computing systems need to be supported by real-time DBMSs. In this paper we discuss critical issues related to real-time transaction management in mobile computing systems. We identify some open research problems and suggest directions for future work on possible solution methods. We also present a mob... View full abstract»

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  • Summary grids: building accurate multidimensional histograms

    Publication Year: 1999, Page(s):187 - 194
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    Data summarization is very important for many data analysis tasks. In this paper we propose a simple but efficient data summarization algorithm, which outputs a histogram for multidimensional data, and make a comparative study of its usage with different distributions and with existing algorithms. The idea is to iteratively grow and modify regions of homogeneous data. This is a different strategy ... View full abstract»

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  • Data mining and personalization technologies

    Publication Year: 1999, Page(s):6 - 13
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (132 KB)

    Data mining has become increasingly popular and is widely used in various application areas. In this paper, we examine new developments in data mining and its application to personalization in E-commerce. Personalization is what merchants and publishers want to do to tailor the Web site or advertisement and product promotion to a customer based on his past behavior and inference from other like-mi... View full abstract»

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  • Discover relaxed periodicity in temporal databases

    Publication Year: 1999, Page(s):203 - 209
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    The relaxed-periodicity pattern describes loose-cyclic behavior of objects while allowing uneven stretch or shrink on the time axis, limited noise, and inflation/deflation of attribute values. To discover relaxed-periodicity from temporal databases, we propose the concepts of attribute trend, trend inertia, peak-valley pattern, inertia algorithm with anti-noise ability as well as the peak-valley a... View full abstract»

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  • Design and implementation of a structured information retrieval system for SGML documents

    Publication Year: 1999, Page(s):81 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (164 KB)

    SGML has become very popular as the source language of structured documents because its usefulness has already been verified by the CALS (Commerce At Light Speed) project. Traditional information retrieval systems (IRSs), however, cannot support retrieval based on the logical structure of SGML documents. In this paper, we design a structured IRS (SIRS) supporting both content-based retrieval and s... View full abstract»

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  • An approach for generating file interfaces

    Publication Year: 1999, Page(s):61 - 68
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    This paper deals with generating interfaces to files. The presented approach consists of two main parts: first, describing the file structure in an object-oriented manner, and second, manipulating the files by means of either SQL or ODMG 2.0 object manipulation and querying. The principle of the approach is centered around a powerful specification language. Using this language, the structure of fi... View full abstract»

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  • A fuzzy object query language (FOQL) for image databases

    Publication Year: 1999, Page(s):117 - 124
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (120 KB)

    Content based retrieval systems have been developed for querying image data in which the users can pose queries based on visual properties such as color and texture. These systems, which have advanced the state of the art in image database systems, remarkably lack formal query languages. The traditional query languages are unable to capture the inherent fuzzy nature of the image data and content b... View full abstract»

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  • Maintenance of placement dependency in distributed multidatabase systems

    Publication Year: 1999, Page(s):339 - 346
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Placement dependency is a data allocation constraint in distributed multidatabase systems. It has been shown that this constraint can be used to speed up query processing. However, update operations may violate placement dependency. It is important to support the maintenance of placement dependency in distributed multidatabase systems. We present a method for maintaining placement dependency. We d... View full abstract»

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  • Recovery in distributed extended long-lived transaction models

    Publication Year: 1999, Page(s):313 - 320
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    We address the recovery and the rollback problem in distributed collaborative transactions. We propose a solution to the problem in a generalized ARIES framework. We modified its existing data structures and provided additional data structures for recovery of distributed extended long-lived transactions. In the proposed model the transactions communicate and collaborate only by exchanging messages... View full abstract»

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  • Mining exception instances to facilitate workflow exception handling

    Publication Year: 1999, Page(s):45 - 52
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1348 KB)

    The importance of exception handling within the context of workflow management has been widely recognized. While some exceptions are expected at design time and thus can be incorporated into the workflow design via some flexible mechanism, others are totally unexpected. Previous work in handling unexpected workflow exceptions focuses on the run-time support to, for example, allow the rollback of s... View full abstract»

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  • FRAGTIQUE: an OO distribution design methodology

    Publication Year: 1999, Page(s):283 - 290
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    We present an OO distribution design methodology based on a ponderated graph called Class Dependency Graph (CDG) which captures structural relationships and query usage frequencies of an OO database. We characterize and select a set of methods for which parallel execution can be optimized. These methods determine the partitioning strategy and are used to partition the CDG into a set of partition t... View full abstract»

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  • Materialized view evolution support in data warehouse environment

    Publication Year: 1999, Page(s):247 - 254
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    As a sufficiently abstract level, the data in the data warehouse can be seen as a set of materialized views, where the base data resides at the information sources. These materialized views are designed based on the users' requirements (e.g., frequently asked queries). However, a data warehouse is a dynamic environment, i.e., when user query requirement changes, the existing materialized views sho... View full abstract»

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  • An effective Boolean algorithm for mining association rules in large databases

    Publication Year: 1999, Page(s):179 - 186
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    In this paper, we present in effective Boolean algorithm for mining association rules in large databases of sales transactions. Like the a priori algorithm, the proposed Boolean algorithm mines association rules in two steps. In the first step, logic OR and AND operations are used to compute frequent itemsets. In the second step, logic AND and XOR operations are applied to derive all interesting a... View full abstract»

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  • Visualization of path expressions in a visual object-oriented database query language

    Publication Year: 1999, Page(s):99 - 108
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1200 KB)

    Path expressions have been accepted for concisely manipulating the nested structures in complex object-oriented query expressions. However, previous visual query languages hardly represent such query expressions in a concise and intuitive way partly due to improper visual representation of path expressions and partly due to lack of well-defined system and semantics of languages. In this paper, we ... View full abstract»

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  • Feature reduction for neural network based text categorization

    Publication Year: 1999, Page(s):195 - 202
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (116 KB)

    In a text categorization model using an artificial neural network as the text classifier scalability is poor if the neural network is trained using the raw feature space since textural data has a very high-dimension feature space. We proposed and compared four dimensionality reduction techniques to reduce the feature space into an input space of much lower dimension for the neural network classifi... View full abstract»

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  • Supporting Web-based database application development

    Publication Year: 1999, Page(s):17 - 24
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    This paper discusses our experiences of designing and implementing a pure Java database proxy server with a JDBC compatible driver for intranet/Internet database application development. In particular, we present a shared database connection strategy and flexible caching facilities to address the scalability problem. Web clients with the same access privilege can maintain their logical connections... View full abstract»

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