Information Systems (TOIS)


Search Issue
enter search term and/or author name


ACM Transactions on Information Systems (TOIS), Volume 9 Issue 1, Jan. 1991

Optimal placement of high-probability randomly retrieved blocks on CLV optical discs
Daniel Alexander Ford, Stavros Christodoulakis
Pages: 1-30
DOI: 10.1145/103731.103732
Optimal data placement on a CLV (Constant Linear Velocity) format optical discs has an objective the minimization of the expected access cost of data retrievals from the disc when the probabilities of access of data items may be different. The...

A distributed object-oriented database system supporting shared and private databases
Won Kim, Nat Ballou, Jorge F. Garza, Darrell Woelk
Pages: 31-51
DOI: 10.1145/103731.103733
ORION-2 is a commercially available, federated, object-oriented database management system designed and implemented at MCC. One major architectural innovation in ORION-2 is the coexistence of a shared databese and a number of private databases....

Exploiting parallelism in pattern matching: an information retrieval application
Victor Wing-Kit Mak, Kuo Chu Lee, Ophir Frieder
Pages: 52-74
DOI: 10.1145/103731.103734
We propose a document-searching architecture based on high-speed hardware pattern matching to increase the throughput of an information retrieval system. We also propose a new parallel VLSI pattern-matching algorithm called the Data Parallel...

Integrating expert systems with group decision support systems
Milam W. Aiken, Olivia R. Liu Sheng, Douglas R. Vogel
Pages: 75-95
DOI: 10.1145/103731.103735
Expert systems are powerful tools that serve as adjuncts to decision making and have found wide applicability in a wide variety of areas. Integrating expert systems with group decision support systems has the potential to enhance the quality and...