NDLI: Subsumption and recognition of heterogeneous constraint networks

Content Provider	IEEE Xplore Digital Library
Author	Weida, R. Litman, D.
Copyright Year	1994
Description	Author affiliation: Dept. of Comput. Sci., Columbia Univ., New York, NY, USA (Weida, R.)
Abstract	Terminological knowledge representation (TKR) systems, such as KL-ONE, are widely used in AI to construct concept taxonomies based on subsumption inferences. However, current TKR systems are unable to represent temporal patterns or recognize instances of such patterns from ongoing observations. Motivated by applications such as service personnel dispatching, and plan recognition for interactive user interfaces, we extend TKR by introducing terminological QME (qualitative, metric and equality) networks. In QME networks, nodes are TKR concepts and arcs are qualitative constraints between temporal intervals associated with nodes, metric constraints between end-points of temporal intervals, and equality constraints among roles of different concepts. We use QME networks to represent patterns, and define QME network subsumption, which enables us to organize a pattern library into a taxonomy. We also develop a terminological approach to predictive pattern recognition based on subsumption and a related notion of compatibility. We assign a modality of "necessary", "optional" or "impossible" to every pattern as events and constraints are observed. We also show how to augment a pattern library for complete recognition. This work, implemented in the T-REX system, enables more sophisticated applications of TKR technology.<>
Starting Page	381
Ending Page	388
File Size	840696
Page Count	8
File Format	PDF
ISBN	081865550X
DOI	10.1109/CAIA.1994.323650
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-03-01
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Taxonomy Knowledge representation Artificial intelligence Pattern recognition Dispatching Libraries Computer science Personnel User interfaces Prototypes
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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