To deal with these issues a new workshop was created. This volume contains the proceedings of its first edition: WoDOOM12 - 1st International Workshop on Debugging Ontologies and Ontology Mappings held on October 8; 2012 in Galway; Ireland.
In his excellent invited talk; Bijan Parsia gave a classification of different defects in ontologies and discussed how easy or difficult it is to detect these defects. Further; there were presentations of two research papers and one experience paper; as well as a demonstration.
The editors would like to thank the Program Committee for their work in enabling the timely selection of papers for inclusion in the proceedings. We also appreciate our cooperation with EasyChair as well as our publisher Linköping University Electronic Press. WoDOOM12 was an EKAW 2012 (18th International Conference on Knowledge Engineering and Knowledge Management) workshop.