The SMM4H-Spanish corpus was manually annotated by linguist experts following the SMM4H-Spanish guidelines. These guidelines contain rules for annotating professions, employment statuses and work-related activities in health-related tweets in Spanish. Additionally, they also include some considerations regarding the codification of the annotations to the ESCO and SNOMED-CT taxonomies.
Guidelines were created de novo in three phases:
- First, a zero version of the guidelines was developed after annotating a initial batch of ~200 tweets and outlining the main problems and difficulties of the data.
- Second, a stable version of guidelines was reached while annotating sample sets of the ProfNER corpus iteratively until quality control was satisfactory.
- Third, guidelines are iteratively refined as manual annotation continues.