Document (#4846)

Author
Janes, J.W.
Title
¬The binary nature of continous relevance judgements : a study of users' perceptions
Source
Journal of the American Society for Information Science. 42(1991) no.10, S.754-756
Year
1991
Abstract
Replicates a previous study by Eisenberg and Hu regarding users' perceptions of the binary or dichotomous nature of their relevance judgements. The studies examined the assumptions that searchers divide documents evenly into relevant and nonrelevant. 35 staff, faculty and doctoral students at Michigan Univ., School of Education and Dept. of Psychology conducted searchers and the retrieved documents submitted to the searchers in 3 incremental versions: title only; title and abstract; title, abstract and indexing information: At each stage the subjects were asked to judge the relevance of the document to the query. The findings support the earlier study and the break points between relevance and nonrelevance was not at or near 50%

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