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Boynton, Janette; Glanville, Julie; McDaid, David; Lefebvre, Carol – Journal of Information Science, 1998
This study of an online search strategy based on word frequency found that it provided 98% sensitivity in retrieving systematic reviews of health-care interventions in MEDLINE, while retaining a low (20%) but acceptable precision. Presents other strategies with other levels of sensitivity and precision and discusses factors that may affect the…
Descriptors: Comparative Analysis, Computer Software Development, Health, Indexing

Al-Kharashi, Ibrahim A.; Evens, Martha W. – Journal of the American Society for Information Science, 1994
Describes experiments in Arabic information retrieval using 29 queries against a base of 355 bibliographic records. Using roots and stems as index terms worked better than words, and the root performed as well as or better than the stem at low recall levels and definitely better at high recall levels. (Contains 30 references.) (KRN)
Descriptors: Algorithms, Arabic, Bibliographic Databases, Comparative Analysis