Information Systems (TOIS)


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ACM Transactions on Information Systems (TOIS), Volume 15 Issue 1, Jan. 1997

Hyperform: a hypermedia system development environment
Uffe K. Wiil, John J. Leggett
Pages: 1-31
DOI: 10.1145/239041.239043
Development of hypermedia systems is a complex matter. The current trend toward open, extensible, and distributed multiuser hypermedia systems adds additional complexity to the development process. As a means of reducing this complexity, there...

A probabilistic relational algebra for the integration of information retrieval and database systems
Norbert Fuhr, Thomas Rölleke
Pages: 32-66
DOI: 10.1145/239041.239045
We present a probabilistic relational algebra (PRA) which is a generalization of standard relational algebra. In PRA, tuples are assigned probabilistic weights giving the probability that a tuple belongs to a relation. Based on intensional...

Customizing information capture and access
Daniela Rus, Devika Subramanian
Pages: 67-101
DOI: 10.1145/239041.239048
This article presents a customizable architecture for software agents that capture and access information in large, heterogeneous, distributed electronic repositories. The key idea is to exploit underlying structure at various...