How many citations are there in the Data Citation Index?

Introduction Lately we have witnessed a renewed interest for data sharing and the development of reproducible research (Anon, 2008). Although the claim for transparency in research is not new (King, 1995), in the last few years researchers have been challenged with the management and processing of huge amounts of datasets for conducting large-scale studies in what is known as the 'Big Data' phenomenon (Lynch, 2008). But data sharing practices are relatively common in some fields such as Genomics or Astronomy (Borgman, 2012). Their experience has allowed the development of infrastructure and a slow expansion towards the rest of fields, but still these practices are far from common. In order to promote data sharing practices, journals and evaluation agencies have started to introduce policies that encourage and in some cases, demand authors to share their datasets (an overview of such policies is offered by Borgman, 2012; Torres-Salinas, Robinson-Garcia & Cabezas Clavijo, 2013).