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Van Rompaey, B. (author), Zaidman, A.E. (author), Van Deursen, A. (author), Demeyer, S. (author)
This paper represents an extension to our previous work: Mining software repositories to study coevolution of production & test code. Proceedings of the International Conference on Software Testing, Verification, and Validation (ICST), IEEE Computer Society, 2008; doi:10.1109/ICST.2008.47 Engineering software systems is a multidimensional...
report 2008
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Van Deursen, A. (author), Mesbah, A. (author), Cornelissen, B. (author), Zaidman, A. (author), Pinzger, M. (author), Guzzi, A. (author)
In practice, many people have to work together to develop and maintain a software system. However, the programmer’s key tool, the Integrated Development Environment (IDE), is a solo-tool, serving to help individual programmers understand and modify the system. Such an IDE does not leverage the knowledge other team members may have of the design...
report 2010
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Bezemer, C. (author), Zaidman, A.E. (author)
The performance of a software system directly influences customer satisfaction. Self-adaptiveness can contribute to this customer satisfaction by (1) taking appropriate measures when the performance becomes critical, e.g., the system load is too high, or (2) scheduling intensive tasks when the load is low. We investigate how self-adaptive...
report 2012
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De Wit, M. (author), Zaidman, A. (author), Van Deursen, A. (author)
Paper accepted for publication in the proceedings of the 25th International Conference on Software Maintenance (ICSM 2009). Code cloning is widely recognized as a threat to the maintainability of source code. As such, many clone detection and removal strategies have been proposed. However, some clones can often not be removed easily so other...
report 2009
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Heck, P. (author), Zaidman, A. (author)
Verification activities are necessary to ensure that the requirements are specified in a correct way. However, until now requirements verification research has focused on traditional up-front requirements. Agile or just-in-time requirements are by definition incomplete, not specific and might be ambiguous when initially specified, indicating a...
report 2014
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Bezemer, C.P. (author), Zaidman, A. (author)
Preprint submitted to Elsevier. The goal of performance maintenance is to improve the performance of a software system after delivery. As the performance of a system is often characterized by unexpected combinations of metric values, manual analysis of performance is hard in complex systems. In this paper, we propose an approach that helps...
report 2013
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Cornelissen, B. (author), Zaidman, A. (author)
Accepted version for publication in IEEE Transactions on Software Engineering. Software maintenance activities require a sufficient level of understanding of the software at hand that unfortunately is not always readily available. Execution trace visualization is a common approach in gaining this understanding, and among our own efforts in this...
report 2009
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Bezemer, C.P. (author), Milon, E. (author), Zaidman, A. (author), Pouwelse, J. (author)
Regression testing can be done by re-executing a test suite on different software versions and comparing the outcome. For functional testing, the outcome of such tests is either pass (correct behaviour) or fail (incorrect behaviour). For non-functional testing, such as performance testing, this is more challenging as correct and incorrect are...
report 2014
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Lubsen, Z. (author), Zaidman, A. (author), Pinzger, M. (author)
Long version of the short paper accepted for publication in the proceedings of the 6th International Working Conference on Mining Software Repositories (MSR 2009). Unit tests are generally acknowledged as an important aid to produce high quality code, as they provide quick feedback to developers on the correctness of their code. In order to...
report 2009
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Bezemer, C.P. (author), Cheplygina, V. (author), Zaidman, A. (author)
One of the key factors in customer satisfaction is application performance. To be able to guarantee good performance, it is necessary to take appropriate measures before a server overload occurs. While in small systems it is usually possible to predict server overload using a subjective human expert, an automated overload prediction mechanism is...
report 2011
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Espinha, T. (author), Zaidman, A. (author), Gross, H.G. (author)
When trying to understand a system that is based on the principles of Service-Oriented Architecture (SOA), it is typically not enough to understand the individual services in the architecture, but also the interactions between the services. In this paper, we present a technique based on dynamic analysis that can be used to obtain insight into...
report 2011
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Hurdugaci, V. (author), Zaidman, A.E. (author)
Preprint of paper published in: 16th European Conference on Software Maintenance and Reengineering (CSMR), 27-30 March 2012; doi:10.1109/CSMR.2012.12 Unit and integration tests can be invaluable during software maintenance as they help to understand pieces of code, they help with quality assurance and they build up confidence amongst developers....
report 2012
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Espinha, T.A. (author), Chen, C. (author), Zaidman, A.E. (author), Gross, H.G. (author)
Prepint of paper published in: ICSE Workshop on Principles of Engineering Service Oriented Systems (PESOS), 4 June 2012; doi:10.1109/PESOS.2012.6225940 Maintenance research in the context of Service Oriented Architecture (SOA) is currently lacking a suitable standard case study that can be used by scientists in order to (1) develop and assess...
report 2012
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Matthijssen, N. (author), Zaidman, A. (author)
Ajax-enabled web applications are a new breed of highly interactive, highly dynamic web applications. Although Ajax allows developers to create rich web applications, Ajax applications can be difficult to comprehend and thus to maintain. FireDetective aims to facilitate the understanding of Ajax applications. It uses dynamic analysis at both the...
report 2011
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Espinha, T. (author), Chen, C. (author), Zaidman, A.E. (author), Gross, H.G. (author)
Preprint of paper published in: 16th European Conference on Software Maintenance and Reengineering (CSMR), 27-30 March 2012; doi:10.1109/CSMR.2012.49 Maintenance research in the context of Service Oriented Architecture (SOA) is currently lacking a suitable standard case study that can be used by scientists in order to develop and assess their...
report 2012
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Athanasiou, D. (author), Nugroho, A. (author), Visser, J. (author), Zaidman, A. (author)
Automated testing is a basic principle of agile development. Its benefits include early defect detection, defect cause localization and removal of fear to apply changes to the code. Therefore, maintaining high quality test code is essential. This study introduces a model that assesses test code quality by combining source code metrics that...
report 2014
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Zaidman, A.E. (author), Van Rompaey, B. (author), Demeyer, S. (author), Van Deursen, A. (author)
Preprint of paper published in: ICST 2008 - Proceedings of the International Conference on Software Testing, Verification, and Validation, 2008; doi:10.1109/ICST.2008.47 Engineering software systems is a multidisciplinary activity, whereby a number of artifacts must be created — and maintained — synchronously. In this paper we investigatewhether...
report 2008
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Cornelissen, B. (author), Holten, D. (author), Zaidman, A. (author), Moonen, L. (author), Van Wijk, J.J. (author), Van Deursen, A. (author)
The use of dynamic information to aid in software understanding is a common practice nowadays. One of the many approaches concerns the comprehension of execution traces. A major issue in this context is scalability: due to the vast amounts of information, it is a very difficult task to successfully find your way through such traces without...
report 2007
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Cornelissen, S.G.M. (author), Zaidman, A. (author), Holten, D. (author), Moonen, L. (author), Van Deursen, A. (author), Van Wijk, J.J. (author)
Preprint of article published in: Journal of Systems and Software (Elsevier), 81 (12), 2008; doi:10.1016/j.jss.2008.02.068 An important part of many software maintenance tasks is to gain a sufficient level of understanding of the system at hand. The use of dynamic information to aid in this software understanding process is a common practice...
report 2008
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Chen, C. (author), Gross, H.G. (author), Zaidman, A.E. (author)
Preprint of paper published in: 5th IEEE International Conference on Service-Oriented Computing and Applications (SOCA), 17-19 December 2012; doi:10.1109/SOCA.2012.6449440 Due to the loosely coupled and highly dynamic nature of service-oriented systems, the actual configuration of such system only fully materializes at runtime, rendering many of...
report 2012
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