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Journal of the American Medical Informatics Association, Vol 3, 27-37, Copyright © 1996 by American Medical Informatics Association

ARTICLES

Willow: a uniform search interface

DS Ketchell, MM Freedman, WE Jordan, EM Lightfoot, S Heyano and PA Libbey
Health Sciences Libraries and Information Center, University of Washington Libraries, and Computing and Communications, University of Washington, Seattle, WA, USA.

The objective of the Willow Project is to develop a uniform search interface that allows a diverse community of users to retrieve information from heterogeneous network-based information resources. Willow separates the user interface from the database management or information retrieval system. It provides a graphic user interface to a variety of information resources residing on diverse hosts, and using different search engines and idiomatic query languages through networked-based client-server and Transmission Control Protocol/Internet Protocol (TCP/IP) protocols. It is based on a "database driver'' model, which allows new database hosts to be added without altering Willow itself. Willow employs a multimedia extension mechanism to launch external viewers to handle data in almost any form. Drivers are currently available for a local BRS/SEARCH system and the Z39.50 protocol. Students, faculty, clinicians, and researchers at the University of Washington are currently offered 30 local and remote databases via Willow. They conduct more than 250,000 sessions a month in libraries, medical centers and clinics, laboratories, and offices, and from home. The Massachusetts Institute of Technology is implementing Willow as its uniform search interface to Z39.50 hosts.


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Copyright © 1996 by the American Medical Informatics Association.