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. 2015 Nov 5;2015:611–620.

Figure 1.

Figure 1.

The general analysis workflow consists of five steps: 1) collect relevant tweets using the Twitter search API with a search term list; 2) preprocess the collected data to filter out non-English tweets and geotag based on user profiles; 3) build classification models to identify relevant tweets and Twitter users; 4) collect relevant users’ Twitter timelines; and 5) analyze the usage of keyterms through comparing term frequencies and co-occurrences.