77 research outputs found
The Misguided Silver Bullet: What XML will and will NOT do to help Information Integration
Incorporating Generalized Quantifiers into Description Logic to Improve Source Selection
Financial Information Mediation: A Case Study of Standards Integration for Electronic Bill Presentment and Payment (EBPP) Using the COIN Mediation Technology
A procedure for mediation of queries to sources in disparate contexts
This paper discusses the algorithm we are using for the mediation of queries to disparate information sources in a Context Interchange system, where information sources may have di erent interpretations arising from their respective context. Queries are assumed to be formulated without regard for semantic heterogeneity, and are rewritten to corresponding mediated queries by taking into account the semantics of data codi ed in axioms associated with sources and receivers (the corresponding context theories). Our approach draws upon recent advances in abductive logic programming and presents an integration of techniques for query rewriting and semantic query optimization. We also demonstrate how thiscanbe e ciently implemented using the constraint logic programming system ECLiPSe.
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