The European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases, ECML/PKDD, provides an international forum for the discussion of the latest high-quality research results in all areas related to machine learning and knowledge discovery in databases and other innovative application domains. The 2014 edition of ECML/PKDD will take place in Nancy, France, September 15-19. Submissions are invited on all aspects of machine learning, knowledge discovery and data mining, including real-world applications. Papers will mainly be evaluated on the basis of their relevance for the conference, their scientific contribution, rigour and correctness, the quality of presentation and reproducibility of experiments. Apart from that, we specifically welcome submissions which : Have the potential to inspire the research community by introducing new and relevant problems, concepts, solution strategies, and ideas; Contribute to solving a problem widely recognized as both challenging and important; Address a novel area of impact of machine learning and data mining.