CHR 2014 CORR PROCEEDINGS: EDITOR'S PREFACE

This volume contains the papers presented at the eleventh Workshop on Constraint Handling Rules (CHR 2014), which will be held in Vienna at the occasion of the Vienna Summer of Logic (VSL).

The Workshop means to bring together in an informal setting, people involved in research on all matters involving CHR, in order to promote the exchange of ideas and feedback on recent developments. CHR 2014 continues the series of successful international workshops on Constraint Handling Rules held in Ulm (Germany), in 2005 in Sitges (Spain) at ICLP, in 2006 in Venice (Italy) at ICALP, in 2007 in Porto (Portugal) at ICLP, in 2008 in Hagenberg (Austria) at RTA, in 2009 in Pasadena (California, USA) at ICLP, in 2010 in Edinburgh (Scotland) at FLoC, in 2011 in Cairo (Egypt) at the second CHR summer school, in 2012 in Budapest (Hungary) at ICLP, and in Berlin (Germany) at the third CHR summer school.
More information about CHR is available on the CHR website (http://dtai.cs.kuleuven.be/CHR/). The papers from all previous editions of the CHR workshop (as well as many other CHR- related papers) are also available for download from the on-line CHR bibliography (http://dtai.cs.kuleuven.be/CHR/biblio.shtml).

We are grateful to all the authors of the submitted papers, the speakers, and the program committee members for their time and efforts. We would also like to thanks the organisers of the Vienna Summer of Logic.