2003, Vol.20, No.4

Journal of the Korean Society for Information Management 2023 KCI Impact Factor : 1.31

pISSN : 1013-0799 / eISSN : 2586-2073
https://journal.kci.go.kr/kosim

The purpose of this study is to analysis the types of cited materials. dependence ratio of foreign information of researchers. and half-life of some cited analysis. Journal articles from four science & technology fields-mechanical, architectural, chemical, electrical-are selected, and the literatures cited by those journal articles are analysed in terms of resource types. languages, publication year of cited analysis. In result, it was found that the order of frequency of citation is scholarly journal, monograph, proceeding, technical report. And dependence ratio of foreign information of researchers was most higher in the chemical field. Also. it was found that half-life of mechanical is 6.50, that of architectural is 5.45, that of chemical is 9.65, that of electrical is 5.60.

In this study an information filtering system was implemented and a series of relevance feedback experiments were conducted using the system. For the relevance feedback, the original queries were searched against the database and the results were reviewed by the researchers. Based on users' online relevance judgements a pair of 17 refined queries were generated using two methods called "co-occurrence exclusion method" and "lower frequencies exclusion method." In order to generate them, the original queries. the descriptors and category codes appeared in either relevant or irrelevant document sets were applied as elements. Users' relevance judgments on the search results of the refined queries were compared and analyzed against those of the original queries. [ 더 많은 내용 보기 ]

To understand current state of the digital reference services in Korean academic libraries, a comprehensive examination and analysis was performed. Data was collected from July 8. 2003 to July 22. 2003, through direct site examination and recording the question and answer transcripts. The analysis focused on the provision characteristics and use of the digital reference services. Results revealed interesting findings and related problems. Suggestions for future development are provided.