ZBroker: a query routing broker for Z39.50 databases

Authors:
Yong Lin;Jian Xu;Ee-Peng Lim;Wee-Keong Ng
Affiliations:
Centre for Advanced Information Systems, School of Applied Science, Nanyang Technological University, Nanyang Avenue, Singapore 639798;Centre for Advanced Information Systems, School of Applied Science, Nanyang Technological University, Nanyang Avenue, Singapore 639798;Centre for Advanced Information Systems, School of Applied Science, Nanyang Technological University, Nanyang Avenue, Singapore 639798;Centre for Advanced Information Systems, School of Applied Science, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Venue:
Proceedings of the eighth international conference on Information and knowledge management
Year:
1999

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Abstract

A query routing broker is a software agent that determines from a large set of accessing information sources the ones most relevant to a user's information need. As the number of information sources on the Internet increases dramatically, future users will have to rely on query routing brokers to decide a small number of information sources to query without incurring too much query processing overheads. In this paper, we describe a query routing broker known as ZBroker developed for bibliographic database servers that support the Z39.50 protocol. ZBroker samples the content of each bibliographic database by using training queries and their results, and summarizes the bibliographic database content into a knowledge base. We present the design and implementation of ZBroker and describe its Web-based user interface.