DMCA
Query Reformulation for Dynamic Information Integration (1996)
| Venue: | JOURNAL OF INTELLIGENT INFORMATION SYSTEMS |
| Citations: | 274 - 32 self |
BibTeX
@ARTICLE{Arens96queryreformulation,
author = {Yigal Arens and Craig A. Knoblock and Wei-Min Shen},
title = {Query Reformulation for Dynamic Information Integration},
journal = {JOURNAL OF INTELLIGENT INFORMATION SYSTEMS},
year = {1996},
volume = {6},
pages = {99--130}
}
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Abstract
The standard approach to integrating heterogeneous information sources is to build a global schema that relates all of the information in the different sources, and to pose queries directly against it. The problem is that schema integration is usually difficult, and as soon as any of the information sources change or a new source is added, the process mayhave to be repeated. The SIMS system uses an alternative approach. A domain model of the application domain is created, establishing a fixed vocabulary for describing data sets in the domain. Using this language, each available information source is described. Queries to SIMS against the collection of available information sources are posed using terms from the domain model, and reformulation operators are employed to dynamically select an appropriate set of information sources and to determine how to integrate the available information to satisfy a query. This approach results in a system that is more flexible than existing ones, more easily scalable, and able to respond dynamically to newly available or unexpectedly missing information sources.
Keyphrases
dynamic information integration domain model available information source information source approach result schema integration different source standard approach reformulation operator information source change application domain heterogeneous information source fixed vocabulary data set appropriate set available information alternative approach sims system new source process mayhave global schema
