Saturday, October 16, 2004
Peer-to-Peer Semantic Coordination
Peer-to-Peer Semantic Coordination is just an abstract of a paper to be submitted to SWAP 2004.
"Semantic coordination, namely the problem of finding an agreement on the meaning of heterogeneous schemas, is one of the key issues in the development of the SemanticWeb (see [11, 10, 9, 8, 3, 5, 7, 1, 4, 6] for examples of proposed techniques). In environments with more or less well-defined boundaries, like a corporate Intranet, the problem of semantic coordination can be addressed a priori by defining and using shared schemas (e.g. ontologies) throughout the entire organization1. However, in open environments, like the Semantic Web, this “centralized” approach to semantic coordination is not viable for several reasons, such as the difficulty of “negotiating” a shared model that suits the needs of all parties involved, the practical impossibility of maintaining such a model in a highly dynamic environment, the problem of finding a satisfactory mapping of pre-existing local schemas onto such a global model. In such a scenario, the problem of exchanging meaningful information across locally defined schemas (each possibly presupposing heterogeneous semantic models) seems particularly tough, as we cannot assume an a priori agreement, and therefore its solution requires a more dynamic and flexible form of coordination, which we call “peer-to-peer” semantic
coordination."
"Semantic coordination, namely the problem of finding an agreement on the meaning of heterogeneous schemas, is one of the key issues in the development of the SemanticWeb (see [11, 10, 9, 8, 3, 5, 7, 1, 4, 6] for examples of proposed techniques). In environments with more or less well-defined boundaries, like a corporate Intranet, the problem of semantic coordination can be addressed a priori by defining and using shared schemas (e.g. ontologies) throughout the entire organization1. However, in open environments, like the Semantic Web, this “centralized” approach to semantic coordination is not viable for several reasons, such as the difficulty of “negotiating” a shared model that suits the needs of all parties involved, the practical impossibility of maintaining such a model in a highly dynamic environment, the problem of finding a satisfactory mapping of pre-existing local schemas onto such a global model. In such a scenario, the problem of exchanging meaningful information across locally defined schemas (each possibly presupposing heterogeneous semantic models) seems particularly tough, as we cannot assume an a priori agreement, and therefore its solution requires a more dynamic and flexible form of coordination, which we call “peer-to-peer” semantic
coordination."
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