摘要
本文以SCIE收录1920年、1960年、2000年的1118199篇论文为数据来源，分析了其首次被引时间间隔的分布规律。研究结果发现，不同出版年论文首次被引时间间隔服从幂律分布。不同学科论文在不同出版年、同一出版年的首次被引比例峰值C与幂指数α均正相关。将同一出版年的论文按照被引频次高低倒序排序并分为五组，各组首次被引时间间隔亦满足幂律分布，幂指数α与该组论文的平均被引频次正相关。随后本文探讨了首次被引幂律分布规律的两种可能的应用：可用于构建零被引比例时间演化模型和解释科技期刊论文中迟滞承认现象。
Abstract Based on the data on 1,118,199 papers published in different years （1920, 1960, 2000） drawn from SCIE, we study the distribution of time interval between the publication year and the year of first citation. The research results show that such time intervals obey a power-law distribution. For papers published in different years or papers of different subjects published in the same year, the peak of the time interval （ C ） for the first citation has notable positive correlation with the power exponent （ α ）. Then papers of the same publication year are listed in total cites order and then divide into five groups. It turns out that time intervals for the first citation for those five groups also obey a power-law distribution, with the power exponent （ α ） having notable positive correlation with average total cites. The power law distribution of time intervals for the first citation has two possible applications： it can be used in building the timedependent zero citation model and in explaining the phenomenon of delayed recognition.
出处
《情报学报》
CSSCI
北大核心
2015年第7期693-700,共8页
Journal of the China Society for Scientific and Technical Information
基金
国家自然科学基金项目资助“论文零被引的时间演化规律、影响因素及其应用研究”(编号:71373252)
关键词
首次被引
零被引
人类行为动力学
幂律分布
首次被引时间间隔
first citation, zero citation, human behavior dynamics, power law, time interval for the first citation
