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ACM Transactions on Information Systems (TOIS), Volume 14 Issue 3, July 1996

Natural-language retrieval of images based on descriptive captions
Eugene J. Guglielmo, Neil C. Rowe
Pages: 237-267
DOI: 10.1145/230538.230539
We describe a prototype intelligent information retrieval system that uses natural-language understanding to efficiently locate captioned data. Multimedia data generally require captions to explain their features and significance. Such...

Extending object-oriented systems with roles
Georg Gottlob, Michael Schrefl, Brigitte Röck
Pages: 268-296
DOI: 10.1145/230538.230540
In many class-based object-oriented systems the association between as instance and a class is exclusive and permanent. Therefore these systems have serious difficulties in representing objects taking on different roles over time. Such objects...

A general explanation component for conceptual modeling in CASE environments
Jon Atle Gulla
Pages: 297-329
DOI: 10.1145/230538.230560
In information systems engineering, conceptual models are constructed to assess existing information systems and work out requirements for new ones. As these models serve as a means for communication between customers and developers, it is...

Bias in computer systems
Batya Friedman, Helen Nissenbaum
Pages: 330-347
DOI: 10.1145/230538.230561
From an analysis of actual cases, three categories of bias in computer systems have been developed: preexisting, technical, and emergent. Preexisting bias has its roots in social institutions, practices, and attitudes. Technical bias arises from...