Li-yun Chiang


序號 9
刊名 大學圖書館
年份 2003
出版月份 9月
卷期 Vol.7 No.2
作者 蔣禮芸
作者任職單位 國立臺灣大學圖書館


關鍵字 智慧型檢索技術自然語言處理技術資訊擷取資訊檢索
頁碼 191-205
全文 全文下載 (871)
Title A Survey of Information Extraction
Author Li-yun Chiang
Author's title National Taiwan University Library

With the new techniques and methods, the development of information retrieval has entered a new stage. The first part of this paper examines the development of information retrieval and information service and the second part concentrates on the purpose, methods, and applications of information extraction.

Keywords Information extractionInformation retrievalIntelligent information retrievalNatural language process
fulltext 全文下載 (871)


序號 1
刊名 大學圖書館
年份 2006
出版月份 3月
卷期 Vol.10 No.1
作者 黃慕萱;蔣禮芸
作者任職單位 國立臺灣大學圖書資訊學系;國立臺灣大學圖書館閱覽組


關鍵字 專利分析專利引用網路專利計量學書目耦合
頁碼 2-29
全文 全文下載 (241)
Title The Transition of Taiwan's Information and Electronic Companies—An Empirical Study of Patent Citation Map
Author Mu-hsuan Huang; Li-yun Chiang
Author's title Department of Library and Information Science, National Taiwan University; Public Services Department, National Taiwan University Library

The purpose of this paper is to discuss the transition of Taiwan's information and electronic companies, and explore the relationship between companies and industries through plotting out patent citation maps. The fifty-nine companies studied in this paper, obtained 5,513 patents from U.S. between 1992 and 2000, and they cited 32,945 patents during these years. The research methods of this study include literature review, database retrieval, and bibliographic coupling. Resear-chers divided the period into three, and used cluster analysis and multidimensional scaling to plot out patent citation maps. The result of this study shows that a higher similarity among companies in semiconductor sector, and the relationship between companies is getting closer. In addition, the distinction between industries grows more and more ambivalent, even overlapping in some cases.

Keywords Bibliographic couplingPatent analysisPatent bibliometricsPatent citation map
fulltext 全文下載 (241)