Manual semantic annotations: User evaluation of interface and interaction designs.

Semantic annotation is the process by which existing texts receive a mark-up that allows automatic identification of named entities (e.g., to distinguish between a turkey bird and the country Turkey). Manual annotation is useful both as stand-alone process in a domain-specific setting or as post-processing for automatic annotation algorithms. Development of most annotation tools strongly focuses on providing novel functionality — end-user evaluations of interface and user interaction are rare.