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    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/75989


    Title: Dynamic skylines considering range queries
    Authors: Wang, W.-C.;Wang, E.T.;Chen, Arbee L. P.
    陳良弼
    Contributors: 資科系
    Keywords: Data points;Dynamic skyline query;Efficient algorithm;Grid index;Nearest neighbors;One dimension;Range queries;Range query;Z-order curve;Algorithms;Database systems;Experiments;Search engines
    Date: 2011
    Issue Date: 2015-06-22 14:02:38 (UTC+8)
    Abstract: Dynamic skyline queries are practical in many applications. For example, if no data exist to fully satisfy a query q in an information system, the data "closer" to the requirements of q can be retrieved as answers. Finding the nearest neighbors of q can be a solution; yet finding the data not dynamically dominated by any other data with respect to q, i.e. the dynamic skyline regarding q can be another solution. A data point p is defined to dynamically dominate another data point s, if the distance between each dimension of p and the corresponding dimension of q is no larger than the corresponding distance regarding s and q and at least in one dimension, the corresponding distance regarding p and q is smaller than that regarding s and q. Some approaches for answering dynamic skyline queries have been proposed. However, the existing approaches only consider the query as a point rather than a range in each dimension, also frequently issued by users. We make the first attempt to solve a problem of computing dynamic skylines considering range queries in this paper. To deal with this problem, we propose an efficient algorithm based on the grid index and a novel variant of the well-known Z-order curve. Moreover, a series of experiments are performed to evaluate the proposed algorithm and the experiment results demonstrate that it is effective and efficient. © 2011 Springer-Verlag.
    Relation: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Volume 6588 LNCS, Issue PART 2, 2011, Pages 235-250, 16th International Conference on Database Systems for Advanced Applications, DASFAA 2011; Hong Kong; China; 22 April 2011 到 25 April 2011; 代碼 84609
    Data Type: conference
    DOI link: http://dx.doi.org/10.1007/978-3-642-20152-3_18
    DOI: 10.1007/978-3-642-20152-3_18
    Appears in Collections:[Department of Computer Science ] Proceedings

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