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Table 2 Sources and their weights in calculating AAS (Dates from

From: A critical review on altmetrics: can we measure the social impact factor?

Sources Weight
News 8
Blogs 5
Wikipedia pages; Policy Documents; Patents 3
Twitter (tweets and retweets); Peer review (Publons, Pubpeer); Weibo (until 2015); Google + (until 2019); F1000; Syllabi (Open Syllabus) 1
LinkedIn (until 2014) 0.5
Facebook; Reddit; Pinterest (until 2013); Q and A; YouTube 0.25
Mendeley/Web Science citations 0