DL 2014 PROCEEDINGS: EDITOR'S PREFACE

The International Workshop on Description Logics is the main annual event of the description logic research community. It is devoted to discussing developments and applications of knowledge representation formalisms and systems based on description logics. The workshop explicitly welcomes submissions from researchers that are new to the area and provides quality feedback via peer reviewing, while at the same time being of an inclusive nature with a very high acceptance rate. There are only informal (electronic) proceedings and "publication" at the workshop is not supposed to preclude publication at conferences or journals. More information about the workshop series can be found on the DL website: http://dl.kr.org/.

The 27th edition of the International Workshop on Description Logics was held in Vienna, Austria, on July 17-20, 2014, as part of the Vienna Summer of Logic. This year, a total of 80 papers were submitted, involving authors from 24 countries. Each submission was reviewed by at least three members of the program committee, or additional reviewers recruited by the PC members. A total of 34 papers were selected for oral presentation, and 36 papers were selected for poster presentation.

As in recent years, a Distinguished Student Paper Award was presented to the author(s) of a student paper, i.e. a paper authored independently by researchers that do not yet have a doctoral degree. This year's award went to Stefan Borgwardt for his paper "Fuzzy DLs over Finite Lattices with Nominals", which contributes to our understanding of the complexity of reasoning in fuzzy description logics.

In addition to the presentation of the accepted papers, posters, and demos, the progam featured three invited talks, which were given by Michael Benedikt, Patrick Blackburn, and Alon Y. Halevy. The abstracts of their talks are included in this volume. The talk by Patrick Blackburn was given as part of a joint session with the 15th International Workshop on Non-Monotonic Reasoning (NMR).

Our thanks go to all the authors, invited speakers, PC members, and additional reviewers who made the technical program possible. We would also like to acknowledge the foundation for Principles of Knowledge Representation and Reasoning (KR Inc.) for their financial support and EasyChair for providing a convenient and efficient platform for preparing the program and proceedings.

Last but not least, a warm thank you to all of the participants of DL 2014. We hope that attending the workshop has been an enjoyable and stimulating experience.