Dewenter, Ralf; Dulleck, Uwe; Thomas, Tobias - 2018
political media bias by analyzing articles and newscasts with respect to the tonality on political parties and politicians. On … from 1998 to 2012. With this tonality-based approach we are able to achieve a more direct and reliable measure of media … bias. In addition, we apply the PCI to investigate whether the media fulfil their role as the fourth estate, i.e. provide …