[Staff] [Faculty] [Colloquium] Jayant Madhavan today

[Nita Yack]

COMPUTER SCIENCE
The University of Chicago
TALK



Friday, March 11, 2005
2:30 p.m.
Ryerson 251

Jayant Madhavan
University of Washington
http://www.cs.washington.edu/homes/jayant/

Title: Schemas, Heterogeneity, and Matching

Abstract: Schema heterogeneity arises in any application dealing with 
multiple sources of data. Large enterprises have to cope with the 
heterogeneity arising from the need to import, export, or even 
continuously inter-operate between numerous databases. Web portals 
integrating information from multiple web sites have to cope with the
heterogeneity in the individual site data representations. The need to 
rapidly deploy and easily maintain such systems on a large scale 
requires robust automated solutions for coping with schema 
heterogeneity.

This talk will focus is on a crucial component of bridging schema 
heterogeneity - the task of identifying corresponding elements in 
different schemas, otherwise called Schema Matching. I will describe a 
schema matching system that is extensible and enables easy addition and 
combination of multiple matching techniques. In particular I will 
address the following question: can a matching system acquire expertise 
from the analysis of known schemas and past matching tasks, and use 
this expertise to better discover matches between new and unseen 
schemas? By doing so, our system is able to provide better
matching performance especially for schema pairs that are hard to match 
directly.

The ability to effectively manage heterogeneity also enhances current 
search applications by allowing schema-guided querying and retrieval. I 
will describe such enhancements in the context of web service search 
and desktop search.



Host:  Dave MacQueen
*The talk will be followed by refreshments in Ryerson 255*
Persons who need assistance should call 773-702-6614
Nita Yack
Departmental Administrator
Computer Science Department
1100 E. 58th Street - Room 151
Chicago, IL 60637
(773) 702-6019
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