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The Subgraph Similarity Problem

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3 Author(s)
De Nardo, L. ; Dipt. di Mat. Pura ed Applicata, Univ. of Padova, Padova ; Ranzato, F. ; Tapparo, F.

Similarity is a well known weakening of bisimilarity where one system is required to simulate the other and vice versa. It has been shown that the subgraph bisimilarity problem, a variation of the subgraph isomorphism problem where isomorphism is weakened to bisimilarity, is NP-complete. We show that the subgraph similarity problem and some related variations thereof still remain NP-complete.

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:21 ,  Issue: 5 )