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ACM Transactions on Information Systems (TOIS), Volume 17 Issue 3, July 1999

A decision-theoretic approach to database selection in networked IR
Norbert Fuhr
Pages: 229-249
DOI: 10.1145/314516.314517
In networked IR, a client submits a query to a broker, which is in contact with a large number of databases. In order to yield a maximum number of documents at minimum cost, the broker has to make estimates about the retrieval cost of each...

A corpus analysis approach for automatic query expansion and its extension to multiple databases
Susan Gauch, Jianying Wang, Satya Mahesh Rachakonda
Pages: 250-269
DOI: 10.1145/314516.314519
Searching online text collections can be both rewarding and frustrating. While valuable information can be found, typically many irrelevant documents are also retrieved, while many relevant ones are missed. Terminology mismatches between the...

Context interchange: new features and formalisms for the intelligent integration of information
Cheng Hian Goh, Stéphane Bressan, Stuart Madnick, Michael Siegel
Pages: 270-293
DOI: 10.1145/314516.314520
The Context Interchange strategy presents a novel perspective for mediated data access in which semantic conflicts among heterogeneous systems are not identified a priori, but are detected and reconciled by a context...

Harp: a distributed query system for legacy public libraries and structured databases
Ee-Peng Lim, Ying Lu
Pages: 294-319
DOI: 10.1145/314516.314521
The main purpose of a digital library is to facilitate users easy access to enormous amount of globally networked information. Typically, this information includes preexisting public library catalog data, digitized document collections, and...

Interface and data architecture for query preview in networked information systems
Catherine Plaisant, Ben Shneiderman, Khoa Doan, Tom Bruns
Pages: 320-341
DOI: 10.1145/314516.314522
There are numerous problems associated with formulating queries on networked information systems. These include increased data volume and complexity, accompanied by slow network access. This article proposes a new approach to a network query...