Research Article
Supervised Learning for Suicidal Ideation Detection in Online User Content
Table 3
Linguistic statistical information extracted by LIWC.
| Average word count | Suicide | Nonsuicide |
| Personal nouns | 30.01 | 14.6 | Quantifiers | 3.78 | 3.37 |
| Positive emotion | 5.61 | 7.84 | Negative emotion | 11.12 | 4.89 | Anxiety | 1.46 | 0.55 | Sadness | 3.86 | 0.63 |
| Past focus | 6.78 | 6.27 | Present focus | 34.81 | 17.86 | Future focus | 4.06 | 1.76 |
| Family | 1.07 | 0.82 | Friend | 1.02 | 0.78 | Female references | 0.95 | 1.35 | Male references | 1.03 | 2.40 |
| Work | 2.50 | 3.92 | Money | 0.60 | 1.38 | Death | 4.81 | 0.61 |
| Swear words | 1.47 | 1.62 |
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