Suicide Risk Prediction Using Artificial Intelligence

Over the past decade, social media has been attracting a growing number of people to the online space. Due to the increase in internet usage, a huge number of text data has been produced. Such data can reflectusers’ mental healthstatus, but it is still challenging to predictsuicide risk from data,due to the high complexity of texts.This research aims to predict the suicide risk from Reddit posts using artificial intelligence (AI). The data were collected from the Kaggle dataset, which includedpostingsof suicide subreddits.The datawere pre-processed throughnatural language processing techniques. Logistic regression, naive Bayes, and random forest models were then used for classifying the Reddit users, i.e., to predict if they are in a suicidal or non-suicidal mental state. These models were compared to identify an AI approach that provides the best performance among the three models. Then, the logistic regression model with doc2vec showed the highest precision of 0.92, recall 0.92, and F1score of 0.92.