@inproceedings{BotterweckThielCawleyetal., author = {Botterweck, Goetz and Thiel, Steffen and Cawley, Ciar{\´a}n and Nestor, Daren and Preußner, Andr{\´e}}, title = {Visual Configuration in Automotive Software Product Lines}, abstract = {Abstract. Software Product Line engineering has emerged as a viable and important software development paradigm in the automotive industry. It allows companies to realise significant improvements in time-to-market, cost, productivity, and system quality. One major difficulty with software product line engineering is related to the fact that a product line of industrial size can easily incorporate thousands of variation points. This scale of variability can become extremely complex to manage resulting in a product configuration process that bears significant costs. This paper introduces a meta-model and research tool that employs visualisation and interaction techniques to improve product configuration in high-variability product lines. The meta-model and techniques utilised are illustrated using an automotive restraint system example.}, language = {en} } @inproceedings{BotterweckJanotaSchneeweiss, author = {Botterweck, Goetz and Janota, Mikol{\´a}s and Schneeweiss, Denny}, title = {A design of a configurable feature model configurator}, series = {Proceedings, Third International Workshop on Variability Modelling of Software-intensive Systems, held from January 28 - 30, at the University of Sevilla, Spain}, booktitle = {Proceedings, Third International Workshop on Variability Modelling of Software-intensive Systems, held from January 28 - 30, at the University of Sevilla, Spain}, editor = {Benavides, David}, publisher = {ICB}, address = {Essen}, pages = {165 -- 168}, abstract = {Abstract. Our feature configuration tool S2T2 Configurator integrates (1) a visual interactive representation of the feature model and (2) a formal reasoning engine that calculates consequences of the user's actions and provides formal explanations. The tool's software architecture is designed as a chain of components, whichprovide mappings between visual elements and their corresponding formal representations. Using these mappings, consequences and explanations calculated by thereasoning engine are communicated in the interactive representation.}, language = {en} } @inproceedings{SchubanzPleussPradhanetal., author = {Schubanz, Mathias and Pleuss, Andreas and Pradhan, Ligaj and Botterweck, Goetz and Thurimella, Anil Kumar}, title = {Model-driven Planning and Monitoring of Long-term Software Product Line Evolution}, series = {Proceedings of the Seventh International Workshop on Variability Modelling of Software-intensive Systemsm, Conference VaMoS 2013, Pisa , Italy — January 23 - 25, 2013}, booktitle = {Proceedings of the Seventh International Workshop on Variability Modelling of Software-intensive Systemsm, Conference VaMoS 2013, Pisa , Italy — January 23 - 25, 2013}, editor = {Gnesi, Stefania and Collet, Philippe and Schmid, Klaus}, publisher = {ACM}, address = {New York, NY}, isbn = {978-1-4503-1541-8}, doi = {10.1145/2430502.2430527}, abstract = {In order to increase the level of efficiency and automation, we propose a conceptual model and corresponding tool support to plan and manage the systematic evolution of softwareintensive systems, in particular software product lines (SPL). We support planning on a high abstraction level using decision-making concepts like goals, options, criteria, and rationale. We extend earlier work by broadening the scope in two dimensions: 1) in time, supporting continuous planning over long periods of time and many releases, and 2) in space, supporting traces from high-level decisions down to the implementation. We present a metamodel which allows to represent these concepts, corresponding prototypical tool support, and a first example case using data extracted from an open-source project, Eclipse SWT.}, language = {en} } @inproceedings{SchubanzPleussBotterwecketal., author = {Schubanz, Mathias and Pleuss, Andreas and Botterweck, Goetz and Lewerentz, Claus}, title = {Modeling Rationale over Time to support Product Line Evolution Planning}, series = {Proceedings of the Sixth International Workshop on Variability Modeling of Software-Intensive Systems, Conference VaMoS 2012, Leipzig, Germany — January 25 - 27, 2012}, booktitle = {Proceedings of the Sixth International Workshop on Variability Modeling of Software-Intensive Systems, Conference VaMoS 2012, Leipzig, Germany — January 25 - 27, 2012}, editor = {Eisenecker, Ulrich W. and Apel, Sven and Gnesi, Stefania}, publisher = {ACM}, address = {New York, NY}, isbn = {978-1-4503-1058-1}, doi = {10.1145/2110147.2110169}, pages = {193 -- 199}, abstract = {Software Product Lines are a strategic long-term investment and must evolve to meet new requirements over many years. In previous work, we have shown a model-driven approach (called EvoPL [21]) for planning and managing long-term evolution of product lines. It allows specifying historic and planned future evolution in terms of changes on feature model level. It provides benefits like abstraction, efficiency through automation, and the capability to perform analysis based on models. In this paper, we argue that specifying changes alone is beneficial but not sufficient. This is because for strategic evolution planning "decision drivers" like goals, requirements, and rationale are essential information as well. Hence, we propose a modeling approach that represents such decision drivers and their interrelationships. The approach is based on concepts from literature (e.g., QOC and goal-oriented requirements engineering) and combines and extends them to address the specific needs of model-driven long-term evolution management. Beyond the basic usage for documentation, the suggested models can be used for systematic future planning and tool-supported analysis, e.g., to evaluate the consistency of planned evolutionary changes.}, language = {en} } @inproceedings{SchubanzPleussJordanetal., author = {Schubanz, Mathias and Pleuss, Andreas and Jordan, Howell and Botterweck, Goetz}, title = {Guidance for Design Rationale Capture to Support Software Evolution}, series = {6. Workshop "Design for Future'', 28. - 30. April 2014 in Bad Honnef}, booktitle = {6. Workshop "Design for Future'', 28. - 30. April 2014 in Bad Honnef}, publisher = {Gesellschaft f{\"u}r Informatik}, address = {Bonn}, pages = {60 -- 61}, abstract = {Documenting design rationale (DR) helps to preserve knowledge over long time to diminish software erosion and to ease maintenance and refactoring. However, use of DR in practice is still limited. One reason for this is the lack of concrete guidance for capturing DR. This paper provides a first step towards identifying DR questions that can guide DR capturing and discusses required future research.}, language = {en} } @misc{ThurimellaSchubanzPleussetal., author = {Thurimella, Anil Kumar and Schubanz, Mathias and Pleuss, Andreas and Botterweck, Goetz}, title = {Guidelines for Managing Requirements Rationales}, series = {IEEE Software}, volume = {34}, journal = {IEEE Software}, number = {1}, issn = {0740-7459}, doi = {10.1109/MS.2015.157}, pages = {82 -- 90}, abstract = {Requirements are identified and elaborated on the basis of stakeholders' decisions. The reasoning behind those decisions can be expressed as rationales. Systematic rationale management offers both short-term benefits, such as clearer requirements leading to fewer defects, and long-term benefits, such as simplified requirements evolution. However, little guidance exists for managing requirements rationales. This article presents guidelines to pragmatically capture, trace, maintain, and reuse such rationales. A list of questions augments the guidelines, improving their usability.}, language = {en} } @inproceedings{CawleyNestorPreussneretal., author = {Cawley, Ciar{\´a}n and Nestor, Daren and Preußner, Andr{\´e} and Botterweck, Goetz and Thiel, Steffen}, title = {Interactive Visualisation to Support Product Configuration in Software Product Lines}, abstract = {Abstract. Software Product Line engineering allows companies to realise significant improvements in time-to-market, cost, productivity, and system quality. One major difficulty with software product lines is that within industry there may exist thousands of variation points in a single product line. This scale of variability can become extremely complex to manage resulting in a product configuration process that bears significant costs. This paper presents a feature configuration meta-model and introduces a prototype tool that employs visualisation and interaction techniques to provide feature configuration functionality.}, language = {en} } @inproceedings{BotterweckSchneeweissPleuss, author = {Botterweck, Goetz and Schneeweiss, Denny and Pleuss, Andreas}, title = {Interactive Techniques to Support the Configuration of Complex Feature Models}, abstract = {Whenever a software engineer derives a product from a prod-uct line, he has to resolve variability by making con_guration decisions.This con_guration process can become rather complex because of depen-dencies within the variability model and knock-on e_ects and dependen-cies in other related artefacts. Because of the limited cognitive capacity ofthe human engineer, this complexity limits the ability of handling prod-uct lines with large con_guration spaces. To address this problem wefocus on techniques that support the interactive con_guration of largerfeature models, including (1) visual interaction with a formal reason-ing engine, (2) visual representation of multiple interrelated hierarchies,(3) indicators for con_guration progress and (4) _ltering of visible nodes.The concepts are demonstrated within S2T2 Con_gurator, an interactivefeature con_guration tool. The techniques are discussed and evaluatedwith feature models, however, we believe they can be generalised to othermodels that describe con_guration choices, e.g., variability models anddecision models.}, language = {en} }