(第 29 期)   第十五卷第一期   2020 年 12 月 31 日出刊

Differences Between Bibliographic Coupling and Co-Citation at the Article Level in Library and Information Science Publications

文章層級之書目耦合關係與共被引關係差異分析:以圖書資訊學文獻為例

本文關鍵字:資訊計量學書目耦合共被引InformetricsBibliographic couplingCo-citation

本文摘要

We investigated differences between bibliographic coupling (BC) and co-citation (CC) in article pairs and their possible effects. Although several studies have investigated these methods, most have focused on the most effective method for specific applications according to clustering results. We investigated the differences between BC strength (BCS) and CC strength (CCS) of library and information science (LIS) by using articles published from 2009 to 2018 among 44 LIS journals in Journal Citation Reports. Article pairs were based on 1,446 articles from 30 journals published in 2009. BCS was measured according to common references, and CCS was measured according to CCs in the 22,577 articles published in the 44 LIS journals from 2009 to 2018. Different relationship patterns were observed between BC and CC. The authors are usually in common when an article pair has high BCS. It shows that authors’ citation preferences may affect BCS largely. Although CCS was not affected by citation preferences, CC identified considerably fewer relationships and demonstrated weaknesses in the years following publication. Additionally, sufficient time lag was necessary to reveal the CC relationships between article pairs. In LIS, the time lag to reveal the majority of CC relationships was more than 2 years.

研究分析比較書目耦合與共被引方法,以探討文章層級之書目關係的差異及其影響。先前相關研究主要是依網絡分群結果,探討不同方法所適合之應用,本研究則關注於同對文章之書目耦合強度與共被引強度異同的比較。分析資料之範圍為 44 種在 2009 至 2018 年間被完整收錄於 Journal Citation Report 中的圖書資訊學期刊。本研究從中選定於 2009 年在 30 種具完整 DOI記錄之期刊上出版的 1,446 篇文章,組成分析用之文章對,並計算其書目耦合強度。復以 2009 至 2018 年間出版於 44 種期刊上之 22,577 篇文獻,計算各文章對之共被引強度。研究發現兩個方法在文章層級上具不同模式。高書目耦合強度之文章對,其兩篇文章之作者組合相似度高,顯示書目耦合強度可能受作者引用習慣影響。此因素對於共被引強度無明顯影響,但共被引方法亦有辨識關係較少及需較長累積時間的弱點。進一步分析顯示,圖書資訊學領域的共被引關係之累積時間需兩年以上。
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