PuLSE: a methodology to develop software product lines
SSR '99 Proceedings of the 1999 symposium on Software reusability
Refactoring: improving the design of existing code
Refactoring: improving the design of existing code
A Classification and Comparison Framework for Software Architecture Description Languages
IEEE Transactions on Software Engineering
Generative programming: methods, tools, and applications
Generative programming: methods, tools, and applications
A Survey of Software Refactoring
IEEE Transactions on Software Engineering
Designing Software Product Lines with UML: From Use Cases to Pattern-Based Software Architectures
Designing Software Product Lines with UML: From Use Cases to Pattern-Based Software Architectures
Software Product Line Engineering: Foundations, Principles and Techniques
Software Product Line Engineering: Foundations, Principles and Techniques
Verifying feature-based model templates against well-formedness OCL constraints
Proceedings of the 5th international conference on Generative programming and component engineering
Using resemblance to support component reuse and evolution
Proceedings of the 2006 conference on Specification and verification of component-based systems
Modeling Product Line Architectures through Change Sets and Relationships
ICSE '07 Proceedings of the 29th international conference on Software Engineering
Software Evolution
Evolving software product lines with aspects: an empirical study on design stability
Proceedings of the 30th international conference on Software engineering
MontiCore: a framework for the development of textual domain specific languages
Companion of the 30th international conference on Software engineering
Adding Standardized Variability to Domain Specific Languages
SPLC '08 Proceedings of the 2008 12th International Software Product Line Conference
Extracting and evolving code in product lines with aspect-oriented programming
Transactions on aspect-oriented software development IV
EvoFM: feature-driven planning of product-line evolution
Proceedings of the 2010 ICSE Workshop on Product Line Approaches in Software Engineering
GPCE '10 Proceedings of the ninth international conference on Generative programming and component engineering
Pure delta-oriented programming
FOSD '10 Proceedings of the 2nd International Workshop on Feature-Oriented Software Development
Delta-oriented programming of software product lines
SPLC'10 Proceedings of the 14th international conference on Software product lines: going beyond
Compositional type-checking for delta-oriented programming
Proceedings of the tenth international conference on Aspect-oriented software development
Delta-oriented architectural variability using MontiCore
Proceedings of the 5th European Conference on Software Architecture: Companion Volume
Hierarchical Variability Modeling for Software Architectures
SPLC '11 Proceedings of the 2011 15th International Software Product Line Conference
Variant-preserving refactoring in feature-oriented software product lines
Proceedings of the Sixth International Workshop on Variability Modeling of Software-Intensive Systems
Eliminating the adoption barrier
IEEE Software
Incremental model-based testing of delta-oriented software product lines
TAP'12 Proceedings of the 6th international conference on Tests and Proofs
Model composition in product lines and feature interaction detection using critical pair analysis
MODELS'07 Proceedings of the 10th international conference on Model Driven Engineering Languages and Systems
First-class variability modeling in Matlab/Simulink
Proceedings of the Seventh International Workshop on Variability Modelling of Software-intensive Systems
Engineering delta modeling languages
Proceedings of the 17th International Software Product Line Conference
Variability-aware safety analysis using delta component fault diagrams
Proceedings of the 17th International Software Product Line Conference co-located workshops
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Diversity is prevalent in modern software systems. Several system variants exist at the same time in order to adapt to changing user requirements. Additionally, software systems evolve over time in order to adjust to unanticipated changes in their application environment. In modern software development, software architecture modeling is an important means to deal with system complexity by architectural decomposition. This leads to the need of architectural description languages that can represent spatial and temporal variability. In this paper, we present delta modeling of software architectures as a uniform modeling formalism for architectural variability in space and in time. In order to avoid degeneration of the product line model under system evolution, we present refactoring techniques to maintain and improve the quality of the variability model. Using a running example from the automotive domain, we evaluate our approach by carrying out a case study that compares delta modeling with annotative variability modeling.