Preface The MPM workshop series brings together researchers and practitioners inter- ested in using explicit and heterogeneous models throughout the design of a system. The Ninth edition took place on 29th September 2015 and was co-located with MODELS0 15 in Ottawa, Canada. Out of the 6 papers submitted and reviewed by at least four members of the program committee, 5 were selected for oral presentation. In addition to the presentation of the selected papers from the technical program, MPM015 featured an invited presentation by Prof. Hans Vangheluwe on the topic of Abstraction. This volume contains versions of the selected papers that the authors had the opportunity to enhance by taking into account reviewers comments. October 16, 2015 Daniel Balasubramanian Bruno Barroca Sahar Kokaly Gergely Mezei Pieter Van Gorp v Table of Contents Analyzing Regulatory Conformance in Medical Research Systems Using Multi-Paradigm Modeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Phillipa Bennett, Wuliang Sun, Wade Ted, Geri Georg, Indrakshi Ray and Michael Kahn Towards Inconsistency Management by Process-Oriented Dependency Modeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 István Dávid, Joachim Denil and Hans Vangheluwe Towards a Unifying Approach for Performance-Driven Software Model Refactoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Davide Arcelli, Vittorio Cortellessa and Daniele Di Pompeo An Expeditious Approach to Modeling IDE Interaction Design . . . . . . . . . 4 Vasco Sousa and Eugene Syriani Towards a Unifying Model Transformation Bus . . . . . . . . . . . . . . . . . . . . . . . 5 Maris Jukss, Bruno Barroca, Clark Verbrugge and Hans Vangheluwe vi Program Committee Vasco Amaral Daniel Balasubramanian Vanderbilt University Bruno Barroca School of Computer Science, McGill University Kirstie Bellman The Aerospace Corporation Dominique Blouin Hasso-Plattner-Institut Frédéric Boulanger Supélec Didier Buchs CUI, University of Geneva Antonio Cicchetti Mälardalen University Benoit Combemale IRISA, Université de Rennes 1 Arnaud Cuccuru CEA LIST Juan De Lara Universidad Autonoma de Madrid Joachim Denil McGill University Vincent Englebert University of Namur Thomas Huining Feng University of California, Berkeley Holger Giese Hasso Plattner Institute at the University of Pots- dam Gabor Karsai Sahar Kokaly McMaster University Thomas Kuehne Victoria University of Wellington Laszlo Lengyel Tihamer Levendovszky Levi Lucio MSDL Bart Meyers University of Antwerp Gergely Mezei BUTE Mark Minas Universität der Bundeswehr München Pieter Mosterman Ahsan Qamar Georgia Institute of Technology Rick Salay University of Toronto Hessam Sarjoughian ACIMS, Arizona State University Eugene Syriani University of Montreal Martin Torngren Prof Mamadou Traoré Blaise Pascal University, Clermont-Ferrand 2 Pieter Van Gorp Eindhoven University of Technology Hans Vangheluwe University of Antwerp and McGill University Daniel Varro Budapest University of Technology and Economics Jeroen Voeten TU Eindhoven Bernhard Westfechtel University of Bayreuth Manuel Wimmer Business Informatics Group, Vienna University of Technology vii