Information Systems (TOIS)


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ACM Transactions on Information Systems (TOIS), Volume 14 Issue 4, Oct. 1996

Self-indexing inverted files for fast text retrieval
Alistair Moffat, Justin Zobel
Pages: 349-379
DOI: 10.1145/237496.237497
Query-processing costs on large text databases are dominated by the need to retrieve and scan the inverted list of each query term. Retrieval time for inverted lists can be greatly reduced by the use of compression, but this adds to the CPU time...

Information system behavior specification by high level Petri nets
Andreas Oberweis, Peter Sander
Pages: 380-420
DOI: 10.1145/237496.237498
The specification of an information system should include a description of structural system aspects as well as a description of the system behavior. In this article, we show how this can be achieved by high-level Petri nets—namely, the...

The model-assisted global query system for multiple databases in distributed enterprises
Waiman Cheung, Cheng Hsu
Pages: 421-470
DOI: 10.1145/237496.237499
Today's enterprises typically employ multiple information systems, which are independently developed, locally administered, and different in logical or physical designs. Therefore, a fundamental challenge in enterprise information management is...

Author Index
Author Index
Pages: 471-472
DOI: 10.1145/237496.237500