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http://ssrn.com/abstract=577242
 
 

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Representation and Reasoning about Changing Semantics in Heterogeneous Data Sources


Hongwei (Harry) Zhu


University of Massachusetts Lowell; Massachusetts Institute of Technology (MIT); Old Dominion University

Stuart Madnick


Massachusetts Institute of Technology (MIT) - Sloan School of Management

Michael Siegel


Massachusetts Institute of Technology (MIT) - Sloan School of Management

August 2004

MIT Sloan Working Paper No. 4497-04; CISL Working Paper No. 2004-14

Abstract:     
Changes of semantics in data sources further complicate the semantic heterogeneity problem. We identify four types of semantic heterogeneities related to changing semantics and present a solution based on an extension to the Context Interchange (COIN) framework. Changing semantics is represented as multi-valued contextual attributes in a shared ontology; however, only a single value is valid over a certain time interval. A mediator, implemented in abductive constraint logic programming, processes the semantics by solving temporal constraints for single-valued time intervals and automatically applying conversions to resolve semantic differences over these intervals. We also discuss the scalability of the approach and its applicability to the Semantic Web.

Number of Pages in PDF File: 16

Keywords: semantic heterogeneity problem, Context Interchange (COIN) framework

working papers series


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Date posted: August 17, 2004  

Suggested Citation

Zhu, Hongwei (Harry) and Madnick, Stuart and Siegel, Michael, Representation and Reasoning about Changing Semantics in Heterogeneous Data Sources (August 2004). MIT Sloan Working Paper No. 4497-04; CISL Working Paper No. 2004-14. Available at SSRN: http://ssrn.com/abstract=577242 or http://dx.doi.org/10.2139/ssrn.577242

Contact Information

Hongwei Zhu (Contact Author)
University of Massachusetts Lowell ( email )
United States
Massachusetts Institute of Technology (MIT) ( email )
Cambridge, MA 02139
United States
HOME PAGE: http://web.mit.edu/~mrzhu
Old Dominion University ( email )
Norfolk, VA 23529
United States
757-683-5175 (Phone)
HOME PAGE: http://www.odu.edu/~hzhu
Stuart E. Madnick
Massachusetts Institute of Technology (MIT) - Sloan School of Management ( email )
E53-321
Cambridge, MA 02142
United States
617-253-6671 (Phone)
617-253-3321 (Fax)
Michael Siegel
Massachusetts Institute of Technology (MIT) - Sloan School of Management ( email )
E53-323
Cambridge, MA 02142
United States
617-253-2937 (Phone)
617-258-7579 (Fax)
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