NDLI: Issues in the design of EHTS: a multiuser hypertext system for collaboration

Content Provider	IEEE Xplore Digital Library
Author	Wiil, U.K.
Copyright Year	1992
Description	Author affiliation: Dept. of Comput. Sci., Aalborg Univ., Denmark (Wiil, U.K.)
Abstract	The paper describes the architecture, issues from the design, and experiences from the use of EHTS (Emacs hyper text system), a multiuser hypertext system for collaboration. EHTS consists of a text editor, a graphical browser, and an active hypertext database named HyperBase. HyperBase is built on the client-server model and has been designed especially to support collaboration among its users, by providing an event mechanism and a fine-grained lock mechanism. Events from HyperBase are used to notify the editor and browser about important actions on the shared data, enabling them to monitor changes. Four categories of issues from the design and experiences from the use of EHTS are reported: architecture, collaboration, user interface, and data model. Based on experiences with the client-server model, the author suggests a new and improved architecture for the event driven multiuser hypertext system. One major lesson learned is that events and fine-grained locks can provide powerful support for data sharing among multiple users simultaneously working in the same environment. The need for a flexible data model is another lesson learned. It is difficult to predict what data model objects actually will be needed, when the data model is designed before the user interface.
Starting Page	629
Ending Page	639
File Size	970747
Page Count	11
File Format	PDF
ISBN	0818624205
DOI	10.1109/HICSS.1992.183314
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-01-07
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hypertext systems Collaboration Data models User interfaces Databases Collaborative work Programming environments Information retrieval Displays Computer science
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
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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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