Research Article
Supervised Learning for Suicidal Ideation Detection in Online User Content
Table 1
Annotation rules and examples of social texts.
| Categories | Rules | Examples |
| Suicide text | (i) Expressing suicidal thoughts | I want to end my life tonight. | (ii) Including potential suicidal actions | Yesterday, I tried to cut my wrist, but failed. |
| Nonsuicide text | (i) Formally discussing suicide | The global suicide rate is increasing. | (ii) Referring to other’s suicide | I am so sad to hear that Robin Williams ended his life. | (iii) Not relevant to suicide | I love this TV show and watch every week. |
|
|