Advanced Search
MyIDEAS: Login to save this paper or follow this series

Derivations of Clustering Performance of Spatial Access Methods

Contents:

Author Info

  • Akhil Kumar
  • Waleed A. Muhanna
Registered author(s):

    Abstract

    This paper develops analytical expressions and algorithms for deriving the number of clusters that an average query of a given size and orientation retrieves using a given spatial access method. Besides being of theoretical interest, these algorithms run very fast and can be used by query schedulers and optimizers on the fly to determine best processing plans. Current techniques for determining the number of clusters are based on simulation, which is slow. Our algorithms are discussed in the context of the hilbert method for ease of exposition, but they do generalize in most cases to other space filling methods. Moreover, they apply for any given blocking factor. We prove that the proposed approach provides exact results for the case of blocking factor of 1, and empirically demonstrate that it yields near exact results for other blocking factors.

    Download Info

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
    File URL: http://www.cob.ohio-state.edu/dept/acctmis/fac/muhanna/research/clustp2.ps
    Our checks indicate that this address may not be valid because: 404 Not Found (http://www.cob.ohio-state.edu/dept/acctmis/fac/muhanna/research/clustp2.ps [301 Moved Permanently]--> http://fisher.osu.edu/dept/acctmis/fac/muhanna/research/clustp2.ps). If this is indeed the case, please notify (Thomas Krichel)
    Download Restriction: no

    Bibliographic Info

    Paper provided by Ohio State University in its series Corporate Finance & Organizations with number _012.

    as in new window
    Length:
    Date of creation:
    Date of revision:
    Handle: RePEc:wop:ohstfi:_012

    Contact details of provider:
    Postal: 700 Fisher Hall, 2100 Neil Avenue, Columbus, Ohio 43210-1144
    Phone: 614-292-5026
    Fax: 614-292-2418
    Web page: http://fisher.osu.edu/fin/
    More information through EDIRC

    Related research

    Keywords:

    This paper has been announced in the following NEP Reports:

    References

    No references listed on IDEAS
    You can help add them by filling out this form.

    Citations

    Lists

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    Statistics

    Access and download statistics

    Corrections

    When requesting a correction, please mention this item's handle: RePEc:wop:ohstfi:_012. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Thomas Krichel).

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.