pasfoto 2012 06 15

Roel Wieringa

Case study research in information systems engineering: How to generalize, how not to generalize, and how not to generalize too much

Abstract. Case studies are detailed studies of a small number of real-world cases in order to understand the mechanisms that play a role in creating phenomena in the case. Case studies have been performed in the information systems discipline for at least twenty years. In this talk I will show what role case studies play in the problem investigation and artifact validation tasks of the design cycle, giving examples of the various kinds of case studies that can be used in these tasks: observational case studies, problem-driven action research, and technical action research. Second, I will discuss how not to generalize from case studies: by statistical inference or by variable-based similarity. This will clear the stage for how to generalize from case studies: by architectural similarity. In order not to raise expectations of generalizability too much, I will also indicate the limitations of this kind of generalization.

Short Bio. Roel Wieringa is Chair of Information and Software Systems Engineering at the University of Twente, the Netherlands. His research interests include modelling and design of e-business networks, requirements engineering , and research methodology for software engineering, information systems and the design sciences. He has written two books, Requirements Engineering: Frameworks for Understanding (Wiley, 1996) and Design Methods for Reactive Systems: Yourdon, Statemate and the UML (Morgan Kaufmann, 2003). His book Design Science Methodology for Information Systems and Software Engineering will appear in 2014 with Springer. Roel Wieringa has been head of the Computer Science Department of the UT from 2009 to 2012 and has been scientific director of the School for Information and Knowledge Systems (SIKS,, that provides advanced education to all Dutch Ph.D. students in information and knowledge systems, from 2006 to 2011). He has been Associate Editor in Chief of IEEE Software for the area of requirements engineering from 2004 to 2007 and currently serves on the board of editors of the Requirements Engineering Journal and of the Journal of Software and Systems Modeling. Find more information at


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KlausPohlKlaus Pohl

Cockpits: Real-Time Monitoring and Adaptation Future Internet Applications 

Abstract. FI-WARE is the cornerstone of the Future Internet Public Private Partnership (PPP) Programme, a joint action by the European Industry and the European Commission. We will give a brief overview on the Fi-WARE and its associated use-case projects and sketch the capabilities of future-internet applications build using the generic enablers of the FI-WARE project.
We illustrate the potential of future-internet application using concrete scenarios from the logistic domain and elaborate on so-called software-cockpits which facilitate continuous monitoring and adaptation of future internet applications. We discuss the principle challenges of software cockpits and elaborate on adaptation principles including prediction and on-line-testing techniques.

Short Bio. Prof. Klaus Pohl is a full professor for Software Systems Engineering in computer science at paluno – The Ruhr Institute for Software Engineering – and the Institute for Computer Science and Business Information Systems (ICB) at University of Duisburg-Essen. From 2005 to 2007 he was the founding director and Chief Scientific Advisor (2007-2009) of Lero, the Irish Software Engineering Research Centre. His research interests include requirements engineering, adaptive future internet applications, software services and service-based system, software quality assurance, and variability management. He coordinated several national and international research projects, including the European Network of Excellence on Services and Services-based Systems (S-Cube). Among others, Klaus is member of the steering committee and executive board of the European Technology Platform NESSI (Networked European Software and Services Initiative) and serves on the steering committee of the German Innovation Alliance SPES (Software Platform for Embedded Systems). He served as program chair and general chair for more than 10 international conferences, including 35th Intl. Conference on Software Engineering (ICSE 2013), 9th and 12th Intl. Software Product Line Conferences (SPLC 2005/2008), 18th Intl. Conference on Advanced Information Systems Engineering (CAiSE 2006), Intl. Requirements Engineering Conference (RE 2002). Klaus Pohl is (co-)author of more than 200 peer-reviewed publications and several text books including "Software Product Line Engineering: Foundations, Principles, and Techniques", Springer 2005, "Requirements Engineering: Fundamentals, Principles and Techniques", Springer 2010, and "Requirements Engineering Fundamentals: A Study Guide for the Certified Professional for Requirements Engineering Exam - Foundation Level – IREB", Rocky Nook Computing, 2011.


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Ricardo-BaezaRicardo Baeza-Yates

Big Data or Right Data?

Abstract. Big data nowadays is a fashionable topic, independently of what people mean when they use this term. But being big is just a matter of volume, although there is no clear agreement in the size threshold. On the other hand, it is easy to capture large amounts of data using a brute force approach. So the real goal should not be big data but to ask ourselves, for a given problem, what is the right data and how much of it is needed. For some problems this would imply big data, but for the majority of the problems much less data will and is needed. In this keynote we explore the trade-offs involved and the main problems that come with big data: scalability, redundancy, bias, noise, spam, and privacy.

Short Bio. Ricardo Baeza-Yates is VP of Yahoo! Research for Europe and Latin America, leading the labs at Barcelona, Spain and Santiago, Chile, since 2006. He is also part time Professor at the Dept. of Information and Communication Technologies of the Universitat Pompeu Fabra in Barcelona, Spain, since 2005. Until 2005 he was Professor and Director of the Center for Web Research at the Department of Computer Science of the Engineering School of the University of Chile. He obtained a Ph.D. from the University of Waterloo, Canada, in 1989. Before he obtained two masters (M.Sc. CS & M.Eng. EE) and the electronics engineering degree from the University of Chile, Santiago. He is co-author of the best-seller Modern Information Retrieval textbook, published in 1999 by Addison Wesley with a second enlarged edition in 2011, as well as co-author of the 2nd edition of the Handbook of Algorithms and Data Structures, Addison-Wesley, 1991; and co-editor of Information Retrieval: Algorithms and Data Structures, Prentice-Hall, 1992, among more than 300 other publications. He has received the Organization of American States award for young researchers in exact sciences (1993) and the CLEI Latin American distinction for contributions to CS in the region (2009). In 2003 he was the first computer scientist to be elected to the Chilean Academy of Sciences. During 2007 he was awarded the Graham Medal for innovation in computing, given by the University of Waterloo to distinguished ex-alumni. In 2009 he was named ACM Fellow and in 2011 IEEE Fellow.


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