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Chen, Hsinchun; Lally, Ann M.; Zhu, Bin; Chau, Michael – Journal of the American Society for Information Science and Technology, 2003
Discussion of the information needs of medical professionals and researchers focuses on the architecture of a Web portal designed to integrate advanced searching and indexing algorithms, an automatic thesaurus, and self-organizing map technologies to provide searchers with fine-grained results. Reports results of evaluation of spider algorithms…
Descriptors: Algorithms, Evaluation Methods, Indexing, Information Needs

Chen, Hsinchun; Chau, Michael – Annual Review of Information Science and Technology (ARIST), 2004
Presents an overview of machine learning research and reviews methods used for evaluating machine learning systems. Ways that machine-learning algorithms were used in traditional information retrieval systems in the "pre-Web" era are described, and the field of Web mining and how machine learning has been used in different Web mining…
Descriptors: Algorithms, Evaluation Methods, Information Retrieval, Information Science