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Computer Science > Social and Information Networks

arXiv:2302.06030 (cs)
[Submitted on 13 Feb 2023]

Title:Time-to-event modeling of subreddits transitions to r/SuicideWatch

Authors:Xueying Liu, Shiaofen Fang, George Mohler, Joan Carlson, Yunyu Xiao
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Abstract:Recent data mining research has focused on the analysis of social media text, content and networks to identify suicide ideation online. However, there has been limited research on the temporal dynamics of users and suicide ideation. In this work, we use time-to-event modeling to identify which subreddits have a higher association with users transitioning to posting on r/suicidewatch. For this purpose we use a Cox proportional hazards model that takes as input text and subreddit network features and outputs a probability distribution for the time until a Reddit user posts on r/suicidewatch. In our analysis we find a number of statistically significant features that predict earlier transitions to r/suicidewatch. While some patterns match existing intuition, for example r/depression is positively associated with posting sooner on r/suicidewatch, others were more surprising (for example, the average time between a high risk post on r/Wishlist and a post on r/suicidewatch is 10.2 days). We then discuss these results as well as directions for future research.
Subjects: Social and Information Networks (cs.SI); Computers and Society (cs.CY); Machine Learning (cs.LG)
Cite as: arXiv:2302.06030 [cs.SI]
  (or arXiv:2302.06030v1 [cs.SI] for this version)
  https://doi.org/10.48550/arXiv.2302.06030

Submission history

From: Xueying Liu [view email]
[v1] Mon, 13 Feb 2023 00:13:05 UTC (1,069 KB)
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