• Journal of the Korean Society for information Management
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• v.29 no.3
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• pp.79-97
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• 2012

The purpose of this study was to investigate the current status of assigning book numbers and the perceptions of librarians who assign the book numbers at two National Libraries, nine Regional Central Libraries and Jeongdok Public Library in Korea. Based upon the analysis, a better method to assign book numbers for the libraries was suggested. The most serious problem was the length of the book numbers due to the duplication of book numbers and lack of intuitiveness. Therefore, this study suggested a user-oriented way of assigning book numbers based upon combining the name of the author and the year of the publication.

• Journal of the Korean Society for information Management
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• v.18 no.2
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• pp.7-30
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• 2001

The characteristics of the short document representatives and short queries of OPAC systems need the different ranking algorithms from IR systems. This study tested and analyzed the effectiveness of four sorting schemes and four ranking algorithms and the six effectiveness measurements for the ranked Boolean OPAC systems. The sorting by publication year was better but without significant difference. The cover density ranking was significantly better than the frequency-based ranking of the Fuzzy or DNF models. The simple effectiveness measurement based on the average rank of relevant documents retrieved was as good as the others and better than the precision P.