Open AccessSampling and concentration values of incomplete bibliographies
Author(s) -
Egghe L.
Publication year - 2002
Publication title -
journal of the american society for information science and technology
Language(s) - English
Resource type - Journals
eISSN - 1532-2890
pISSN - 1532-2882
DOI - 10.1002/asi.10033
Subject(s) - bibliography , truncation (statistics) , sampling (signal processing) , sample (material) , statistics , informetrics , inequality , sampling design , value (mathematics) , econometrics , mathematics , mathematical economics , computer science , library science , sociology , bibliometrics , demography , mathematical analysis , thermodynamics , physics , population , filter (signal processing) , computer vision
This article studies concentration aspects of bibliographies. More, in particular, we study the impact of incompleteness of such a bibliography on its concentration values (i.e., its degree of inequality of production of its sources). Incompleteness is modeled by sampling in the complete bibliography. The model is general enough to comprise truncation of a bibliography as well as a systematic sample on sources or items. In all cases we prove that the sampled bibliography (or incomplete one) has a higher concentration value than the complete one. These models, hence, shed some light on the measurement of production inequality in incomplete bibliographies.