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Volume 41 Issue 8
Aug.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(8): 1476-1484.
LI Xiaotao, HU Xiaohui, LI Binquanet al. Heterogeneous data sharing technology based on two-layer metadata and ontology[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1476-1484. doi: 10.13700/j.bh.1001-5965.2014.0568(in Chinese)
Citation: LI Xiaotao, HU Xiaohui, LI Binquanet al. Heterogeneous data sharing technology based on two-layer metadata and ontology[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1476-1484. doi: 10.13700/j.bh.1001-5965.2014.0568(in Chinese)
shu

Heterogeneous data sharing technology based on two-layer metadata and ontology

doi: 10.13700/j.bh.1001-5965.2014.0568

  • School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 16 Sep 2014
  • Publish Date: 20 Aug 2015
    Abstract
  • With the aim to share multi-sourced, multi-class, heterogeneous data simultaneously, an information sharing technology was proposed based on a two-layer metadata combined with ontology. Firstly, the structure of the two-layer metadata standard was analyzed. At the same time, how to implement uniform description for heterogeneous data was introduced. Secondly, due to the lack of semantic information, some important potential correlations between metadata classes may be ignored. For this reason ontology was established on the metadata layer for describing and reasoning the relationships between classes. Finally, in order to improve the recall rate and optimize the retrieval time, an improved method combining Lucene full-text search engine with SPARQL query was proposed to retrieve metadata. SPARQL retrieval was performed before the keyword queried by Lucene. Soccer match information of 2014-2015 UEFA Champions League was selected as test data. The experiment results illustrate the effectiveness on sharing heterogeneous data and improvement on recall and timeliness of the approach.

     

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