KIM, Y. and COOKE, L., 2017. Big data analysis of public library operations and services by using the Chernoff face method. Journal of Documentation, 73 (3), pp. 466-480.
Purpose – The purpose of this paper is to conduct a big data analysis of public library
operations and services of two cities in two countries by using the Chernoff face method.
Design/methodology/approach – The study is designed to evaluate library services by
analysing the Chernoff face. Big data on public libraries in London and Seoul were
collected respectively from CIPFA and the Korean government’s website for drawing a
Chernoff face. The association of variables and human facial features was decided by
survey. Although limited in its capacity to handle a large number of variables (eight were
analysed in this study) the Chernoff face method does readily allow for the comparison
of a large number of instances of analysis. 58 Chernoff faces were drawn from the
formatted data by using the R programming language.
Findings – The study reveals that most of the local governments in London perform
better than those of Seoul. This consequence is due to the fact that local governments in
London operate more libraries, invest more budgets, allocate more staff and hold more
collections than local governments in Seoul. This administration resulted in more use of
libraries in London than Seoul. The study validates the benefit of using the Chernoff
face method for big data analysis of library services.
Practical implications – Chernoff face method for big data analysis offers a new
evaluation technique for library services and provides insights that may not be as readily
apparent and discernible using more traditional analytical methods.
Originality/value – This study is the first to use the Chernoff face method for big data
analysis of library services in library and information research.