Research on Broken Mappings Detecting Method Based on Fuzzy Aggregation Operators in Deep Web Integration Environment

Abstract

The deep web integration system employs a set of semantic mappings between the mediated schema and the schemas of web data sources. In this dynamic environment, sources often undergo changes that invalidate the mappings. Such continuous monitoring is extremely labor intensive, and poses a key bottleneck to the widespread deployment of web data integration systems in practice. The paper describes DBMFR (Detecting Broken Mappings Based on Fuzzy Reasoning) an automatic solution to detecting broken mappings. Fuzzy aggregation operators are leveraged to calculate the score, which implies whether the mapping is broken. The paper provides a new fuzzy reasoning algorithm based on fuzzy aggregation operators. Experiments over real-world sources demonstrate the effectiveness of our fuzzy-based approach over existing solutions, as well as the utility of our improvements.

Management of Dynamic Biomedical Terminologies: Current Status and Future Challenges

“…The former step can be performed using various techniques borrowed from different paradigms: database techniques aiming at periodically comparing the results of queries [36,37] and deducing invalid mappings when the queries produce erroneous results. For deduction, software engineering techniques and fault-tolerance [38] or logic-based reasoning approaches [39] have been investigated. Although detecting broken mappings is useful to prepare the phase of modifying mappings during maintenance, it is still insufficient to repair mappings and then keep them upto-date.…”

Integration operators for generating RDF/OWL-based user defined mediator views in a grid environment

“…The decision of which operator to apply to a given set of integration units depends on the interschema semantic relationships among these units (e.g. equivalence, overlap, .. etc), and user preferences, see (Li et al 2010;Tawil et al 2008;Li and Ling 2004). Semantic preservation rules for validating user decisions have been defined.…”