Initial Search Strategy

Christopher Khoo

Description

Initial Search Strategy

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• Arts

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• Publié par: olonilux
• Nombre de lectures: 112
• Langue: Français

Extrait

E-Referencer: A Prototype Expert System Web Interface to Online Catalogs

Christopher S. G. Khoo 1 , Danny C. C. Poo 2 , Teck-Kang Toh 2 , Soon-Kah Liew 1 , and Anne N. M. Goh 1 1 Centre for Advanced Information Systems School of Applied Science Nanyang Technological University Singapore 639798 [e-mail] 2 De t. of Information Systems p School of Computing National University of Singapore Singapore 119260 [e-mail]

Abstract.  An expert system Web interface to online catalogs called E- Referencer is being developed. An initial prototype has been implemented. The interface has a repertoire of initial search strategies and reformulation strategies that it selects and implements to help users retrieve relevant records. It uses the Z39.50 protocol to access library systems on the Internet. This paper describes the design of E-Referencer, and the development of search strategies to be used by the interface. A preliminary evaluation of the strategies is also presented.

1 Introduction

An expert system Web interface to online catalogs called E-Referencer is being devel- oped. An initial prototype has been implemented and is accessible at the URL http://islab.sas.ntu.ac.sg:8000/E-Referencer/ . It uses the Z39.50 Information Retrieval protocol to communicate with library systems on the Internet. This paper describes the design of E-Referencer and the effort to develop effective search strategies for it. A preliminary evaluation is also presented. An effective search interface is an important component of a digital library. A digital library can adopt two main retrieval approaches: 1.   Best match retrieval, which outputs a ranked list of documents or records, with the closest match at the top of the list 2.   Boolean retrieval, which retrieves records that match criteria specified using Boo- lean operators. C. Nikolaou, C. Stephanidis (Eds.): ECDL'98, LNCS 1513, pp. 315-333, 1998. © Springer-Verlag Berlin Heidelberg 1998