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SkyPackage: From Finding Items to Finding a Skyline of Packages on the Semantic Web

  • Matthew Sessoms
  • Kemafor Anyanwu
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7774)

Abstract

Enabling complex querying paradigms over the wealth of available Semantic Web data will significantly impact the relevance and adoption of Semantic Web technologies in a broad range of domains. While the current predominant paradigm is to retrieve a list of items, in many cases the actual intent is satisfied by reviewing the lists and assembling compatible items into lists or packages of resources such that each package collectively satisfies the need, such as assembling different collections of places to visit during a vacation. Users may place constraints on individual items, and the compatibility of items within a package is based on global constraints placed on packages, like total distance or time to travel between locations in a package. Finding such packages using the traditional item-querying model requires users to review lists of possible multiple queries and assemble and compare packages manually.

In this paper, we propose three algorithms for supporting such a package query model as a first class paradigm. Since package constraints may involve multiple criteria, several competing packages are possible. Therefore, we propose the idea of computing a skyline of package results as an extension to a popular query model for multi-criteria decision-making called skyline queries, which to date has only focused on computing item skylines. We formalize the semantics of the logical query operator, Sky-Package, and propose three algorithms for the physical operator implementation. A comparative evaluation of the algorithms over real world and synthetic-benchmark RDF datasets is provided.

Keywords

RDF Package Skyline Queries Performance 

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References

  1. 1.
    Abadi, D., Marcus, A., Madded, S., Hollenbach, K.: Scalable Semantic Web Data Management Using Vertical Partitioning. In: VLDB 2007 (2007)Google Scholar
  2. 2.
    Borzsonyi, S., Kossmann, D., Stocker, K.: The skyline operator. In: ICDE 2001, pp. 421–430 (2001)Google Scholar
  3. 3.
    Chen, L., Gao, S., Anyanwu, K.: Efficiently evaluating skyline queries on RDF databases. In: Antoniou, G., Grobelnik, M., Simperl, E., Parsia, B., Plexousakis, D., De Leenheer, P., Pan, J. (eds.) ESWC 2011, Part II. LNCS, vol. 6644, pp. 123–138. Springer, Heidelberg (2011)CrossRefGoogle Scholar
  4. 4.
    Chomicki, J., Godfrey, P., Gryz, J., Liang, D.: Skyline with presorting. In: ICDE 2003, pp. 717–719 (2003)Google Scholar
  5. 5.
    Khabbaz, M., Lakshmanan, L.V.S.: TopRecs: Top-k algorithms for item-based collaborative filtering. In: EDBT 2011, pp. 213–224 (2011)Google Scholar
  6. 6.
    Kossmann, D., Ramsak, F., Rost, S.: Shooting Stars in the Sky: An Online Algorithm for Skyline Queries. In: VLDB 2002, pp. 275–286 (2002)Google Scholar
  7. 7.
    Raghavan, V., Rundensteiner, E.: SkyDB: Skyline Aware Query Evaluation Framework. In: IDAR 2009 (2009)Google Scholar
  8. 8.
    Papadias, D., Tao, Y., Fu, G., Seeger, B.: Progressive Skyline Computation in Database Systems. In: TODS 2005, pp. 41–82 (2005)Google Scholar
  9. 9.
    Tan, K.L., Eng, P.K., Ooi, B.C.: Efficient Progressive Skyline Computation. In: VLDB 2001, pp. 301–310 (2001)Google Scholar
  10. 10.
    Vlachou, A., Doulkeridis, C., Polyzotis, N.: Skyline query processing over joins. In: SIGMOD 2011, pp. 73–84 (2011)Google Scholar
  11. 11.
    Xie, M., Lakshmanan, L.V.S., Wood, P.T.: Breaking out of the Box of Recommendations: From Items to Packages. In: RecSys 2010, pp. 151–158 (2010)Google Scholar
  12. 12.
    Xie, M., Lakshmanan, L.V.S., Wood, P.T.: CompRec-Trip: a Composite Recommendation System for Travel Planning. In: ICDE 2011, pp. 1352–1355 (2011)Google Scholar
  13. 13.
    Yiu, M.L., Mamoulis, N.: Efficient Processing of Top-k Dominating Queries on Multi-Dimensional Data. In: VLDB 2007, pp. 483–494 (2007)Google Scholar
  14. 14.
    Jin, W., Ester, M., Hu, Z., Han, J.: The Multi-Relational Skyline Operator. In: ICDE 2007, pp. 1276–1280 (2007)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Matthew Sessoms
    • 1
  • Kemafor Anyanwu
    • 1
  1. 1.Semantic Computing Research Lab, Department of Computer ScienceNorth Carolina State UniversityRaleighUSA

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