A Gatekeeper among Gatekeepers

Figures & data

TABLE 1 Total number of news articles per year

	All news			Political news
	1996	2008	2013	1996	2008	2013
News agency
ANP	56,170	89,877	74,283	2174	5197	3924
Print newspapers
Algemeen Dagblad	46,859	41,717	43,573	2480	1898	2295
De Volkskrant	33,789	37,495	35,752	2848	3648	2720
Trouw	32,743	35,284	28,361	3118	3101	2882
NRC Handelsblad	36,429	34,384	30,877	2783	4441	4032
De Telegraaf			56,490			3577
Online newspapers
Algemeen Dagblad			39,997			1788
De Volkskrant			32,477			2262
Trouw			22,107			2014
NRC Handelsblad			5364			744
De Telegraaf			34,351			1761

Values for online newspapers are based on the first half of 2013 only.

FIGURE 1 Document similarity scores versus manual codings of document similarity

FIGURE 2 Precision, recall, F1, and Cohen’s Kappa for two gold standards

FIGURE 3 Proportion of articles that can be traced back to ANP per newspaper per year

FIGURE 4 Proportion of print and online articles that can be traced back to ANP in the first half of 2013

FIGURE 5 Time between an online newspaper article and the news agency article to which it can be traced back

FIGURE 6 Proportions of a newspaper’s (rows) ANP-influenced articles that also influenced another newspaper (columns)