Several types of text annotations are commonly used in epidemiology:
Entity Annotation: This involves marking specific entities such as disease names, medications, or geographical locations within the text. Relation Annotation: This type of annotation identifies relationships between entities, such as the association between a risk factor and a disease. Event Annotation: This involves tagging events such as disease outbreaks, patient diagnoses, or treatment outcomes. Sentiment Annotation: Although less common in epidemiology, sentiment annotation may be used to gauge public opinion in health surveys or social media posts.
