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Abstract

We discuss whether it is feasible to build intelligent rule- or weight-based algorithms into general-purpose software for interactive thesaurus navigation. We survey some approaches to the problem reported in the literature, particularly those involving the assignement of 'link weights' in a thesaurus network, and point out some problems of both principle and practice. We then describe investigations which entailed logging the behavior of thesaurus users and testing the effect of thesaurus-based query enhancement in an IR system using term weighting, in an attempt to identify successful strategies to incorporate into automatic procedures. The results cause us to question many of the assumptions made by previous researchers in this area

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Content

Key Features - Examines the wealth of electronic library resources and the development of e-learning/online learning - Considers the role of the librarian in supporting e-learning/online learning - Provides practical examples for librarians The book is aimed at library managers, electronic resource librarians/ managers, and learner support librarians/managers. Contents The changing information environment - proliferation of electronic resources, grovvth of Internet based subscription sources/electronic journals/ full text services vs bibliographic tools Learning in the digital age - definitions: e-learning, learning technology etc., background/history of e-learning initiatives: higher education and the commercial context, developments in e-learning in higher and further education: growth of managed learning environments/virtual learning environments, common features of commercial software products, distance learning vs on-campus The changing role of the information professional - new rotes: increased need for learner support, importance of information skills training, new skills: web design, managing electronic resources, knowledge of licensing and Copyright issues, information skills within the virtual learning environment Practical problems/linking up systems - authentication/passvvords, linking library catalogues to virtual learning environments, linking e-journals to virtual learning environments, linking Internet resources, importance of customising resources, meta-data/XML Copyright and the licensing of digital resources - text - born digital versus print - digital, the Copyright dearance process, digitisation services, multimedia resources, license agreements Tips for success and conclusions (a librarian's guide to tips for success when becoming involved in these types of initiatives) - designing systems to meet user requirements, collaborating with other support staff Case studies