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4. Automated Testing of Systems of Systems

Author

Akat, Özge, Sözer, Hasan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Bonfanti, Silvia, editor, Gargantini, Angelo, editor, and Salvaneschi, Paolo, editor

Published
2023
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8. A longitudinal case study on Nexus transformation: Impact on productivity, quality, and motivation.

Author

Ersoy, Ersin, Çallı, Engin, Erdoğan, Batuhan, Bağrıyanık, Selami, and Sözer, Hasan

Subjects
AGILE software development, SCRUM (Computer software development), LONGITUDINAL method, MOTIVATION (Psychology), NEW product development, DESIGN software
Abstract

There have been success stories reported regarding the adoption of agile software development methods in the industry. There also exist observations on their limitations. One of these limitations is scalability since agile methods like Scrum were originally designed for small software teams. Scalable agile frameworks were introduced to address this limitation. We conducted an industrial case study on the adoption of such a framework, called Nexus. Our study involves quantitative and qualitative evaluation based on observations within a product development organization over a period of 12 months. Scrum is used for the development of a product during the first 6 months of this period. Nexus is used in the remaining 6 months. Data are collected throughout the whole period for measuring productivity, quality, and team member motivation. Results suggest a significant increase in productivity and product quality after switching to Nexus. Team motivation was slightly improved as well. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Evaluating the Effectiveness of Multi-level Greedy Modularity Clustering for Software Architecture Recovery

Author

Sözer, Hasan, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Bures, Tomas, editor, Duchien, Laurence, editor, and Inverardi, Paola, editor

Published
2019
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13. Extending Static Code Analysis with Application-Specific Rules by Analyzing Runtime Execution Traces

Author

Ersoy, Ersin, Sözer, Hasan, Diniz Junqueira Barbosa, Simone, Series editor, Chen, Phoebe, Series editor, Du, Xiaoyong, Series editor, Filipe, Joaquim, Series editor, Kara, Orhun, Series editor, Kotenko, Igor, Series editor, Liu, Ting, Series editor, Sivalingam, Krishna M., Series editor, Washio, Takashi, Series editor, Czachórski, Tadeusz, editor, Gelenbe, Erol, editor, Grochla, Krzysztof, editor, and Lent, Ricardo, editor

Published
2016
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14. Using Hypergraph Clustering for Software Architecture Reconstruction of Data-Tier Software

Author

Ersoy, Ersin, Kaya, Kamer, Altınışık, Metin, Sözer, Hasan, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Tekinerdogan, Bedir, editor, Zdun, Uwe, editor, and Babar, Ali, editor

Published
2016
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18. Adaptive Domain-Specific Service Monitoring

Author

Ünsal, Arda Ahmet, Sazara, Görkem, Aktemur, Barış, Sözer, Hasan, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Majzik, István, editor, and Vieira, Marco, editor

Published
2014
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19. Effort Estimation for Architectural Refactoring to Introduce Module Isolation

Author

Öztürk, Fatih, Sarılı, Erdem, Sözer, Hasan, Aktemur, Barış, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Avgeriou, Paris, editor, and Zdun, Uwe, editor

Published
2014
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26. Spectrum-Based Fault Localization for Diagnosing Concurrency Faults

Author

Koca, Feyzullah, Sözer, Hasan, Abreu, Rui, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Yenigün, Hüsnü, editor, Yilmaz, Cemal, editor, and Ulrich, Andreas, editor

Published
2013
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27. FAS: Introducing a Service for Avoiding Faults in Composite Services

Author

Gülcü, Koray, Sözer, Hasan, Aktemur, Barış, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, and Avgeriou, Paris, editor

Published
2012
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29. Guiding Architects in Selecting Architectural Evolution Alternatives

Author

Ciraci, Selim, Sözer, Hasan, Aksit, Mehmet, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Crnkovic, Ivica, editor, Gruhn, Volker, editor, and Book, Matthias, editor

Published
2011
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30. Defining Architectural Viewpoints for Quality Concerns

Author

Tekinerdogan, Bedir, Sözer, Hasan, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Crnkovic, Ivica, editor, Gruhn, Volker, editor, and Book, Matthias, editor

Published
2011
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48. Evaluation of image comparison algorithms as test oracles

Author

Erdil, Ö. F., Can, İrfan, Sözer, Hasan, Turhan, Ç., Coşkunçay, A., Yazıcı, A., Oğuztüzün, H., Özyeğin University, and Sözer, Hasan

Subjects
Image comparison, Görüntü karşılaştırma algoritmaları, Endüstriyel vaka çalışması, Industrial case study, Test kâhini, Test automation, Image comparison algorithms, Görüntü karşılaştırması, Test oracles, Test otomasyonu
Abstract

Televizyon gibi yoğun yazılım içeren gömülü sistemlerin kara kutu testleri, grafik kullanıcı arayüzleri (GKA) aracılığıyla gerçekleştirilmektedir. Bu testlerin otomasyonu kapsamında bir dizi kullanıcı işlemi dışarıdan tetiklenmektedir. Bu sırada, doğru ve yanlış sistem davranışı arasında ayrım yapan ve böylece testlerin geçip geçmediğine karar veren otomatik bir test kâhinine ihtiyaç duyulmaktadır. Bu amaçla yaygın olarak görüntü karşılaştırma araçları kullanılmaktadır. Bu araçlar, gözlenen GKA ile daha önceden kaydedilmiş bir referans GKA ekran görüntüsünü karşılaştırmaktadır. Bu çalışmada, 9 farklı görüntü karşılaştırma aracı bir endüstriyel vaka çalışması ile değerlendirildi. Bir televizyon sisteminin gerçek test çalışmalarından 1000 çift referans ve anlık GKA görüntüsü toplandı ve bu görüntüler başarılı/başarısız test olarak etiketlendirildi. Ayrıca, toplanan veri kümesi görüntülerde meydana gelen piksel kayması, renk tonu/doygunluk farklılığı ve resim gövdesinde esneme (büyüme, küçülme, genişleme, daralma) gibi çeşitli etkilere göre sınıflandırıldı. Ardından, bu veri kümesi ile karşılaştırılan araçlar, doğruluk ve performans açısından değerlendirildi. Araçların parametre değerlerine ve karşılaştırılan görüntülerin tâbi oldukları etkilere göre farklı sonuçlar verdiği görülmüştür. Hazırlanan veri kümesi için en iyi sonuçları veren araç ve bu aracın parametre değerleri tespit edilmiştir. Black box testing of software intensive embedded systems such as TVs is performed via their graphical user interfaces (GUI). A series of user events are triggered for automating these tests. In the meantime, there is a need for a test oracle, which decides if tests pass or fail by differentiating between correct and incorrect system behavior. Image comparison tools are commonly used for this purpose. These tools compare the observed GUI screen during tests with respect to a previously recorded snapshot of a reference GUI screen. In this work, we evaluated 9 image comparison tools with an industrial case study. We collected 1000 pairs of reference and runtime GUI images during test activities performed on a real TV system and we labeled these image pairs as passed and failed tests. In addition, we categorized the data set according to various effects observed on images such as pixel shifting, color saturation and scaling. Then, this data set is used for comparing tools in terms of accuracy and performance. We observed that results are dependent on tool parameters and various image effects that take place. We identified the best tool and its parameter set for the collected data set. Publisher version

Published
2017

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