Given the nature of a citation analysis study, we adopt an inductive approach for the purpose of data analysis (Seuring
and Müller, 2008). The literature classification part is completed before the actual data analysis using a deductive approach.
Data analysis is conducted in two parts including ‘bibliometric analysis’ and ‘network analysis’. Bibliometric analysis using
BibExcel and OpenRefine provides additional data statistics including author, affiliation and keyword statistics. BibExcel is a
tool for analyzing bibliographic data or any data of a textual nature formatted in a similar manner (Persson et al., 2009).
BibExcel is chosen due to its flexibility to work with large data sets and the compatibility with different computer applications
including Excel, Pajek and Gephi (Persson et al., 2009). BibExcel is also used to prepare the input data for a detailed
network analysis. OpenRefine (formerly Google Refine) is a powerful tool for cleaning and transforming messy data from
one format to another (www.openrefine.com). The network analysis part uses Gephi to perform a citation analysis,
co-citation analysis and the topical content-based classification of the existing literature of green posts and maritime logistics.
Gephi is chosen over the existing network analysis software such as Pajek (Batagelj and Mrvar, 2011) and VOSviewer
(van Eck and Waltman, 2013) given its capability to work efficiently with large data sets and providing a range of innovative
analysis and investigation options.
Given the nature of a citation analysis study, we adopt an inductive approach for the purpose of data analysis (Seuringand Müller, 2008). The literature classification part is completed before the actual data analysis using a deductive approach.Data analysis is conducted in two parts including ‘bibliometric analysis’ and ‘network analysis’. Bibliometric analysis usingBibExcel and OpenRefine provides additional data statistics including author, affiliation and keyword statistics. BibExcel is atool for analyzing bibliographic data or any data of a textual nature formatted in a similar manner (Persson et al., 2009).BibExcel is chosen due to its flexibility to work with large data sets and the compatibility with different computer applicationsincluding Excel, Pajek and Gephi (Persson et al., 2009). BibExcel is also used to prepare the input data for a detailednetwork analysis. OpenRefine (formerly Google Refine) is a powerful tool for cleaning and transforming messy data fromone format to another (www.openrefine.com). The network analysis part uses Gephi to perform a citation analysis,co-citation analysis and the topical content-based classification of the existing literature of green posts and maritime logistics.Gephi is chosen over the existing network analysis software such as Pajek (Batagelj and Mrvar, 2011) and VOSviewer(van Eck and Waltman, 2013) given its capability to work efficiently with large data sets and providing a range of innovativeanalysis and investigation options.
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