ModRef 2014
The Thirteenth International Workshop 
on Constraint Modelling and Reformulation

at the

20th International Conference on the Principles and Practice 
of Constraint Programming (CP 2014) in Lyon, France, on 
September (TBD), 2014.

Aims and Scope

Constraint Programming (CP) is a powerful technology to model and solve combinatorial problems, which are ubiquitous in academia and industry. The last ten years or so have witnessed significant research devoted to modelling and solving problems with constraints. CP is now a mature field and has been successfully used for tackling a wide range of real-life complex applications. However, such a technology is currently accessible to only a small number of experts. For CP to be more widely used by non-experts, more research effort is needed in order to ease the use of the CP technology. We solicit original papers that contribute to widen the use of the CP technology.

Workshop topics include (but are not limited to):

Application papers describing interesting problems and interesting ways to model them;

Contributions to understanding modelling that could guide the manual or automatic formulation of models;

Identification of the criteria that should be used in evaluating models and the design of pragmatic techniques that facilitate the choice and possibly combination among alternative models;

Design of higher-level modelling languages;

Automatic reformulation techniques.

The workshop will be held as a full-day or half-day workshop. Please note that workshop-participants need to be registered for the workshop. Past events of this workshop series can be found here (

Important Dates

Submission date: July 9th, 2014 Notification of acceptance: August 15th, 2014 Camera ready version: August 22nd, 2014 Workshop day: September (TBD), 2014

Program Committee

  • Carlos Ansotegui Universitat de Lleida, Spain
  • Jessica Davies University of Toronto
  • Ivan Dotu UPC, Spain
  • Alan Frisch University of York
  • Emmanuel Hebrard LAAS, CNRS
  • George Katsirelos INRA, Toulouse, France
  • Christopher Jefferson University of St. Andrews, UK
  • Daniel Le Berre Artois University, France
  • Jimmy Lee The Chinese University of Hong Kong
  • Yuri Malitsky Cork Constraint Computation Centre
  • Joao Marques-Silva University College Dublin, Ireland
  • Ian Miqguel University of St. Andrews, UK
  • Peter Nightingale University of St. Andrews, UK
  • Jean-Charles Regin University of Nice-Sophia Antipolis / I3S / CNRS
  • Ashish Sabharwal IBM Research
  • Horst Samulowitz IBM Research
  • Meinolf Sellmann IBM Research
  • Roberto Sebastiani University of Trento, Italy
  • Peter Stuckey University of Melbourne, Australia
  • Mateu Villaret Universitat de Girona, Spain


Submissions must be formatted in the Lecture Notes in Computer Science (LNCS) style and must be within 15 pages excluding references. Submissions of shorter papers, including position papers, are welcome.

Papers must be submitted in PDF format using EasyChair (

All submissions will be reviewed and those that are well-written and make a worthwhile contribution to the topic of the workshop will be accepted for publication in the workshop proceedings. The proceedings will be available electronically at CP 2014. At least one author of each accepted paper must attend the workshop. Please note that every workshop participant needs to be registered for the workshop.

ModRef 2014 Chair:

Carlos Ansotegui (