“…Therefore, developing methods for automatically detecting posts with content indicating potential for imminent harm (e.g., within 24 hr) could have value and would make it feasible to offer help to those who need it. While early research focused on manual evaluation of social media posts (e.g., Holleran, 2010), in the last few years researchers have developed methods for automatically detecting particular sentiments in posts, for example, depression and suicidality on Twitter (e.g., De Choudhury, Gamon, Counts, & Horvitz, 2013;Nambisan, Luo, Kapoor, Patrick, & Cisler, 2015;O'Dea et al, 2015). Furthermore, De Choudhury, Kiciman, Dredze, Coppersmith, and Kumar (2016) developed a method to identify which Reddit users are more likely to develop suicidal ideation.…”