The counting of core journal gatekeepers as science indicators really counts.: The scientific scope of action and strength of nations
The counting of core journal gatekeepers as science indicators really counts.: The scientific scope of action and strength of nations
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DOI：
10.1007/s11192-005-0023-7
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发表时间：
2005-03-01
期刊：
影响因子：
3.9
通讯作者：
Dióspatonyi, I
中科院分区：
文献类型：
--
作者：
Braun, T;Dióspatonyi, I
不完整的参考书目（或者更一般地说，不完整的信息生产过程（IPP））可以被视为完整参考书目的样本。抽样可以在来源或项目中进行。最简单的采样技术是系统采样技术，其中每个 kthsource 或 kthitem 都被获取（或者：删除）(kÎû)。在本文中，我们在具有连续变量的 IPP 框架中给出了项目和来源的系统抽样的定义。我们证明了这样的定理：在此类 IPP 中，当且仅当源中的系统抽样与项目中的系统抽样相同时，我们才具有 Lotkaian 大小频率函数（即递减幂函数）。在这个证明中，我们使用众所周知的幂函数表征作为无标度函数。
An incomplete bibliography (or, more generally, an incomplete Information Production Process (IPP)) can be considered as a sample from a complete one. Sampling can be done in the sources or in the items. The simplest sampling technique is the systematic one where every kthsource or kthitem is taken (alternatively: deleted) (kÎû). In this paper we give a definition of systematic sampling in items and sources in the framework of an IPP in which we have continuous variables. We prove the theorem that in such IPPs we have a Lotkaian size-frequency function (i.e. a decreasing power function) if and only if systematic sampling in sources is the same as systematic sampling in items. In this proof we use the well-known characterization of power functions as scale-free functions.