Hinze, AnnikaHeese, RalfLuczak-Rösch, MarkusPaschke, Adrian2012-11-252012-11-252012Hinze, A., Heese, R., Luczak-Rösch, M. & Paschke, A. (2012). Semantic enrichment by non-experts: Usability of manual annotation tools. The Semantic Web – ISWC 2012 Lecture Notes in Computer Science Volume 7649, 2012, pp 165-181.0302-9743https://hdl.handle.net/10289/6891Most of the semantic content available has been generated automatically by using annotation services for existing content. Automatic annotation is not of sufficient quality to enable focused search and retrieval: either too many or too few terms are semantically annotated. User-defined semantic enrichment allows for a more targeted approach. We developed a tool for semantic annotation of digital documents and conducted an end-user study to evaluate its acceptance by and usability for non-expert users. This paper presents the results of this user study and discusses the lessons learned about both the semantic enrichment process and our methodology of exposing non-experts to semantic enrichment.encomputer scienceConference Contribution10.1007/978-3-642-35176-1_11