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Issue No. 07 - July (2015 vol. 27)
ISSN: 1041-4347
pp: 1838-1860
Yun Peng , Research Center of Big Data Application, Qilu Univeristy of Technology, Jinan, China
Zhe Fan , Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong
Byron Choi , Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong
Jianliang Xu , Department of Computer Science, Hong Kong Baptist University, Kowloon Tong, Hong Kong
ABSTRACT
Subgraph similarity search is used in graph databases to retrieve graphs whose subgraphs are similar to a given query graph. It has been proven successful in a wide range of applications including bioinformatics and chem-informatics, etc. Due to the cost of providing efficient similarity search services on ever-increasing graph data, database outsourcing is apparently an appealing solution to database owners. Unfortunately, query service providers may be untrusted or compromised by attacks. To our knowledge, no studies have been carried out on the authentication of the search. In this paper, we propose authentication techniques that follow the popular filtering-and-verification framework. We propose an authentication-friendly metric index called $_${\tt GMTree}$_$ . Specifically, we transform the similarity search into a search in a graph metric space and derive small verification objects ( $_$\cal VO$_$ s) to-be-transmitted to query clients. To further optimize $_${\tt GMTree}$_$ , we propose a sampling-based pivot selection method and an authenticated version of $_${\tt MCS}$_$ computation. Our comprehensive experiments verified the effectiveness and efficiency of our proposed techniques.
INDEX TERMS
Authentication, Indexes, Extraterrestrial measurements, Search problems, Computational modeling
CITATION

Y. Peng, Z. Fan, B. Choi, J. Xu and S. S. Bhowmick, "Authenticated Subgraph Similarity Searchin Outsourced Graph Databases," in IEEE Transactions on Knowledge & Data Engineering, vol. 27, no. 7, pp. 1838-1860, 2015.
doi:10.1109/TKDE.2014.2316818
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