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The annotations: a summary

An annotation is a piece of information attached to some text, usually describing the text in some way. An annotation may be:

In CLEF, we are interested in the sorts of entities found in clinical documents: drugs, body parts, diseases and so on. Annotating a document is the task of marking the mentions of these entities in a document, describing their type, and perhaps adding other annotations to the document to describe the relationships between these things. Typically, annotation software will display annotations by highlighting the text to which it is attached with some colour.

This section gives descriptions of the CLEF gold standard annotations for entities and relationships, and what things they refer to. It tells you:

It does not tell you:

For these things, refer to the sections on annotating entites and annotating relationships in text.