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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50275

Title: Identifying missing relevant patent citation links by using bibliographic coupling in LED illuminating technology
Authors: Dar-Zen Chen
Mu-Hsuan Huang
Hui-Chen Hsieh
Chang-Pin Lin
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: Patent citation network
Hidden relevant patent
Citation time lag
Bibliographical coupling
Pareto principle
Date: 2011-05
Issue Date: 2018-09-28T03:51:21Z
Publisher: Journal of Informetrics
Abstract: Abstract: This study uses bibliographic coupling to identify missing relevant patent links, in order to construct a comprehensive citation network. Missing citation links can be added by taking the missing relevant patent links into account. The Pareto principle is used to determine the threshold of bibliographic coupling strength, in order to identify the missing relevant patent links. Comparisons between the original patent citation network and the comprehensive patent citation network with the missing relevant patent links are illustrated at both the patent and assignee levels. Light emitting diode (LED) illuminating technology is chosen as the case study. The relationships between the patents and the assignees are obviously enhanced after adding the missing relevant patent links. The results show that the growth rates on both the total number and the average number of links have apparently improved at the patent level. At the assignee level, the number of linked assignees and the average number of links between two assignees are increased. The differences between the two citation networks are further examined by means of the Freeman vertex betweenness centrality and Johnson's hierarchical clustering. The patents with more new links to other patents have distinct results in terms of the Freeman vertex betweenness centrality. The enhancement of links among patents also results in different clustering.
Relation: 5(3) pp.400-412
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50275
Appears in Collections:[機械與機電工程學系] 期刊論文

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