NDLI: Using wrapper agents to answer queries in distributed information systems

Content Provider	IEEE Xplore Digital Library
Author	Serafini, L. Ghidini, C.
Copyright Year	2000
Description	Author affiliation: ITC-IRST, Trento, Italy (Serafini, L.)
Abstract	Nowadays, one of the objectives of information integration is to provide a global view of the information contained in a set of information sources. This is an important objective as global views enable us to design applications that use information contained in a set of autonomous and heterogeneous information sources. The global view is represented using a global schema, which is usually different from the schemata of the information sources. Users interested in exploiting the global information must be aware of the global schema. One of the drawbacks of this approach is that users working with local applications, who are often interested in exploiting global information, cannot access global information using their own local applications, as the latter are based on local scemata and are hardly adaptable to the global schema. What we envisage is the possibility for local applications of exploiting information contained in other information sources through their local schema. As an important effect, users can utilize global information via their usual local applications. The architecture we adopt is based on a multi-agent structure. In this structure there is no central agent, which plays the role of a mediator to integrate all the information sources. The key role in the process of information integration is played by the wrapper agents. Wrapper agents (or simply wrappers) are provided both for each information source and, if any, for each global view.
Starting Page	429
Ending Page	430
File Size	114019
Page Count	2
File Format	PDF
ISBN	0769506259
DOI	10.1109/ICMAS.2000.858509
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-07-12
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Distributed information systems Mathematics Information systems
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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