Using Linguistic Features to Estimate Suicide Probability of Chinese Microblog Users
Table 2: Comparison of LIWC and topic features within predictive models of SPS score using RMSE as metric
['Number', 'Trained', 'Inferred', 'LIWC+Trained', 'LIWC+Inferred']
When we combine LIWC and trained topics as features, predict model was improved with regard to big number of topics compared with using trained topics only. When we combine LIWC and inferred topics as features, predict model was not improved. In general, only inferred topics can achieve highest performance no matter with or without help from LIWC.