Semantic Loss in Query Reformulation in Dynamic Distributed Environments.
Bruno F. F. Souza, Maria da Conceição Moraes Batista, Ana Carolina Salgado · 2012
Abstract. Dynamic environments are descentralized systems that provide users with querying capabilities over a set of heterogeneous, distributed and autonomous data sources. Data Integration Systems, Peer Data Management Systems (PDMS) and Dataspaces are examples of such systems. They are composed by data sources (peers) that belong to a specific domain and are linked to each other by mappings (correspondences). Nonetheless, a challenge inherent to dynamic environments is to analyze the semantic loss during query reformulation. A semantic loss may occur when a query is reformulated from a peer to another in the system. To minimize the consequences of this problem, we propose the use of information quality criteria to help the semantic loss analysis. The semantic loss analysis is a step executed to verify the query routing possibilities.