Fig. 3

Psychosis symptom keyword and time expression counts in the early intervention services dataset. The x-axis represents the number of documents obtained after applying length, average line length, and psychosis symptom keyword filters (9901). The y-axis represents normalized counts for psychosis symptom keywords (blue) and automatically extracted time expressions (orange), normalized to the range 0–1. Texts containing many temporal expressions are more likely to also include relevant psychosis symptom keywords