Paul Nieuwenhuysen

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An empirical investigation of the consistency of retrieval through Internet search engines is reported. The focus is on a characteristic related to size: the degree of consistency to which an engine retrieves documents. Does an engine always present the same relevant documents that are, or were, available in its database? We observed and identiied three(More)
In this paper the IRT project (Internet / Information Retrieval Tools) is described. The basic goal of IRT is to advise users of Internet search engines in retrieving information from the free public access part of the Internet. In achieving this, IRT has developed a model to evaluate search engines. This model is described in here. Evaluation criteria(More)
This contribution outlines some new challenges that are faced by libraries and information centers and that are caused by the proliferation of heterogeneous electronic publications accessible through the Internet and the WWW. Methods based on information and communication technology are developed worldwide to cope with these challenges. Some of these are(More)