Information Systems (TOIS)


Search Issue
enter search term and/or author name


ACM Transactions on Information Systems (TOIS), Volume 21 Issue 1, January 2003

QProber: A system for automatic classification of hidden-Web databases
Luis Gravano, Panagiotis G. Ipeirotis, Mehran Sahami
Pages: 1-41
DOI: 10.1145/635484.635485
The contents of many valuable Web-accessible databases are only available through search interfaces and are hence invisible to traditional Web "crawlers." Recently, commercial Web sites have started to manually organize Web-accessible databases into...

Local versus global link information in the Web
Pável Calado, Berthier Ribeiro-Neto, Nivio Ziviani, Edleno Moura, Ilmério Silva
Pages: 42-63
DOI: 10.1145/635484.635486
Information derived from the cross-references among the documents in a hyperlinked environment, usually referred to as link information, is considered important since it can be used to effectively improve document retrieval. Depending on the...

Exploiting hierarchical domain structure to compute similarity
Prasanna Ganesan, Hector Garcia-Molina, Jennifer Widom
Pages: 64-93
DOI: 10.1145/635484.635487
The notion of similarity between objects finds use in many contexts, for example, in search engines, collaborative filtering, and clustering. Objects being compared often are modeled as sets, with their similarity traditionally determined based on...

Early user---system interaction for database selection in massive domain-specific online environments
Jack G. Conrad, Joanne R. S. Claussen
Pages: 94-131
DOI: 10.1145/635484.635488
The continued growth of very large data environments such as Westlaw and Dialog, in addition to the World Wide Web, increases the importance of effective and efficient database selection and searching. Current research focuses largely on completely...