Abstract
Large-scale P2P applications can benefit from the ability to predict semantic distances to other peers without having to contact them first. In this paper, we propose a novel semantic distance embedding approach, SDEC, in P2P network, which assigns synthetic coordinates to peers such that the distance between the coordinates of two peers approximately predicts the semantic distance between any two peers. Specifically, the semantic distance between peers is quantitatively characterized through vector space model based on peers’ semantic profiles, and then, based on measured semantic distances from a peer to a handful of other peers and the current coordinates of those peers, we adopt the spring relaxation method, mimicking the physical mass-spring system, to simulate the semantic embedding procedure, which can find minimal energy configuration corresponding to relatively accurate semantic embedding. Simulation results show that a 3-dimensional Euclidean model can embed these peers with relatively high accuracy.
This research is partially support by the 973 Programs 2007CB310607 and 2009CB320504, 863 Project 2007AA01Z206, NSFC Grants 60802022 and 60772062.
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Wang, Y., Nakao, A., Ma, J. (2009). SDEC: A P2P Semantic Distance Embedding Based on Virtual Coordinate System. In: Zhang, D., Portmann, M., Tan, AH., Indulska, J. (eds) Ubiquitous Intelligence and Computing. UIC 2009. Lecture Notes in Computer Science, vol 5585. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02830-4_17
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DOI: https://doi.org/10.1007/978-3-642-02830-4_17
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