Semantic Link Based Top-K Join Queries in P2P Networks

• Jie Liu, Institute of Computing Technology, Chinese Academy of Sciences, China
• Liang Feng, Institute of Computing Technology, Chinese Academy of Sciences, China
• Chao He, Institute of Computing Technology, Chinese Academy of Sciences, China

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Track: Posters

An important issue arising from Peer-to-Peer applications is how to accurately and efficiently retrieve a set of K best matching data objects from different sources while minimizing the number of objects that have to be accessed. This paper resolves this issue by organizing peers in a Semantic Link Network Overlay, where semantic links are established to denote the semantic relationship between peers's data schemas. A query request will be routed to appropriate peers according to the semantic link type and a lower bound of rank function. Optimization strategies are proposed to reduce the total amount of data transmitted.

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• A Pruning-based Approach for Supporting Top-K Join Queries (Posters Track)