Analyzing the research output presented at European Networked Knowledge Organization Systems workshops (2000-2015)

In this paper we analyze a major part of the research output of the Networked Knowledge Organization Systems (NKOS) community in the period 2000 to 2015 from a network analytical perspective. We focus on the paper output presented at the European NKOS workshops in the last 15 years. Our open dataset, the ”NKOS bibliography”, includes 14 workshop agendas (ECDL 2000-2010, TPDL 2011-2015) and 4 special issues on NKOS (2001, 2004, 2006 and 2015) which cover 171 papers with 218 distinct authors in total. A focus of the analysis is the visualization of co-authorship networks in this interdisciplinary field. We used standard network analytic measures like degree and betweenness centrality to describe the co-authorship distribution in our NKOS dataset. We can see in our dataset that 15% (with degree=0) of authors had no co-authorship with others and 53% of them had a maximum of 3 cooperations with other authors. 32% had at least 4 co-authors for all of their papers. The NKOS co-author network in the ”NKOS bibliography” is a typical coauthorship network with one relatively large component, many smaller components and many isolated co-authorships or triples.