We use a corpus that consists of texts published in The Guardian daily newspaper that is actively used by the authorship attribution community in cross-domain studies (Stamatatos, 2013;Sapkota et al., 2014;Sapkota et al., 2015).
there are a handful of authorship attribution studies that explore cross-domain authorship attribution scenarios (Mikros and Argiri, 2007;Goldstein-Stewart et al., 2009;Schein et al., 2010;Stamatatos, 2013;Sapkota et al., 2014).