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普赖斯曲线的拟合与修正 被引量:1

Price′s Curve Fitting & Correction
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摘要 普赖斯曲线的拟合与修正朱宁华莹(河北社科院图书情报中心河北050051)AbstractThepapersimulatestheaccumulativeincreasingcurveofdocumentswiththreemathematicalme... A new formula of English word frequency law is presented is this paper. First, by the calculation of a great number of statistical figures, a new curve of occurrences of English words is presented. The new curve shows that Zipf′s law does not fit the statistic figures well in the low frequency part. Second, based on the new curve, a new word frequency law expressed by a new formula is established. The statistic analysis shows that the new formula fits the curve quite well, and it is proved that Zipf′s law is the linearization of the formula. Finally, a simple method to calculate the two parameters of the new formula is given. It brings an easy use of new formula.
作者 朱宁 华莹
出处 《情报理论与实践》 CSSCI 北大核心 1996年第2期3-5,共3页 Information Studies:Theory & Application
关键词 普赖斯曲线 文献计量学 情报研究 Word frequency distribution Statistical analysis English
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