“…Co-occurrence is also widely observed in webometric data. For example, prior studies examine semantic networks based on co-occurrence of words in various social media posts (Kim, Heo, Choi, & Park, 2014;Shapiro & Park, 2015;Xu et al, 2015Xu et al, , 2016Park, Lim, & Park, 2015). Co-occurrence of words can reveal thematic/topic similarity and variation in online public discussions of issues (Heo, Park, Kim, & Park, 2016), or the media's framing of international events (Jiang, Barnett, & Taylor, 2016).…”