Text and Data Mining valid from 2018-06-28
Received: 17 November 2017
Accepted: 22 January 2018
First Online: 28 June 2018
Change Date: 21 August 2018
Change Type: Correction
Change Details: Upon publication of this article (Kok et al., 2018), the authors noticed that author ‘Miguel Casares Santiago’ was spelt incorrectly. This has been corrected by means of this correction article.
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