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Linkage Expansion in Linked Open Data Cloud using Link Policy

연결정책을 이용한 개방형 연결 데이터 클라우드에서의 연결성 확충

  • 김광민 (서경대학교 대학원 전자컴퓨터공학과) ;
  • 손용락 (서경대학교 컴퓨터공학과)
  • Received : 2017.05.11
  • Accepted : 2017.09.13
  • Published : 2017.10.15

Abstract

This paper suggests a method to expand linkages in a Linked Open Data(LOD) cloud that is a practical consequence of a semantic web. LOD cloud, contrary to the first expectation, has not been used actively because of the lack of linkages. Current method for establishing links by applying to explicit links and attaching the links to LODs have restrictions on reflecting target LODs' changes in a timely manner and maintaining them periodically. Instead of attaching them, this paper suggests that each LOD should prepare a link policy and publish it together with the LOD. The link policy specifies target LODs, predicate pairs, and similarity degrees to decide on the establishment of links. We have implemented a system that performs in-depth searching through LODs using their link policies. We have published APIs of the system to Github. Results of the experiment on the in-depth searching system with similarity degrees of 1.0 ~ 0.8 and depth level of 4 provides searching results that include 91% ~ 98% of the trustworthy links and about 170% of triples expanded.

Acknowledgement

Supported by : 서경대학교

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