Skip to content
University of Maryland LibrariesDigital Repository at the University of Maryland
    • Login
    View Item 
    •   DRUM
    • College of Computer, Mathematical & Natural Sciences
    • Computer Science
    • Technical Reports of the Computer Science Department
    • View Item
    •   DRUM
    • College of Computer, Mathematical & Natural Sciences
    • Computer Science
    • Technical Reports of the Computer Science Department
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Hashing Moving Objects

    Thumbnail
    View/Open
    CS-TR-4143.ps (463.9Kb)
    No. of downloads: 583

    Auto-generated copy of CS-TR-4143.ps (241.9Kb)
    No. of downloads: 986

    Date
    2000-06-03
    Author
    Song, Zhexuan
    Roussopoulos, Nick
    Metadata
    Show full item record
    Abstract
    In real-life applications, the objects are both spatial and temporal referenced. The objects which continuously change their location are called moving objects. With the development of wireless communication and positioning technology, it becomes necessary to store and index those objects in database. Due to the complexity of the problem, many pure spatial index structures are unable to index large volume of moving objects in database. In this paper, we propose a whole new idea based on hashing technique. Since it is impossible to re-index all the objects after each time period, we store the objects in buckets. When an object moves within a bucket, the database does not make any change. By using this technique, the number of database update is greatly reduced which makes the index procedure feasible. Then, we extend the previous system structure by introducing a filter layer between the position information collectors and the database. Also four different methods based on the new system structure are presented. Performance experiments were performed to evaluate different aspects of our indexing techniques, and the conclusions are included in the paper. Department of Computer Science, University of Maryland
    URI
    http://hdl.handle.net/1903/515
    Collections
    • Technical Reports of the Computer Science Department

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility
     

     

    Browse

    All of DRUMCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister
    Pages
    About DRUMAbout Download Statistics

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility