The conference took place on 19-20 September 2011 and was attended by 141 delegates from 30 countries from Europe, Asia, North America, South America and Australia. The keynote address by Patrick Hayes kick-started a two-day programme consisting of 21 talks and two poster presentations.
Following the opening talk, speakers from different domains expanded on their particular view of what ontologies and knowledge structures may mean in their specialised areas of work and what aspects of ontological analysis or formal ontology modelling are relevant in the world of knowledge classifications. A number of talks stressed the urgency for knowledge classification schemes to be published as linked data and the limitations of the existing web ontology standards in expressing semantics were also explained. Presentations about particular schemes illustrated that classifications may indeed require more thought with regards to modelling.