Jason Jung, Antoine Zimmermann, Jérôme Euzenat, Concept-based query transformation based on semantic centrality in semantic peer-to-peer environment, in: Proc. 9th Conference on Asia-Pacific web (APWeb), Huang Shan (CN), (Guozhu Dong, Xuemin Lin, Wei Wang, Yun Yang, Jeffrey Xu Yu (eds), Advances in data and web management (Proc. 9th Conference on Asia-Pacific web (APWeb)), Lecture notes in computer science 4505, 2007), pp622-629, 2007
Query transformation is a serious hurdle on semantic peer-to-peer environment. The problem is that the transformed queries might lose some information from the original one, as continuously traveling p2p networks. We mainly consider two factors; i) number of transformations and// ii) quality of ontology alignment. In this paper, we propose semantic centrality (SC) measurement meaning the power of semantic bridging on semantic p2p environment. Thereby, we want to build semantically cohesive user subgroups, and find out the best peers for query transformation, i.e., minimizing information loss. We have shown an example for retrieving image resources annotated on p2p environment by using query transformation based on SC.