| 1. |
- Bengtsson, PerOlof, et al.
(författare)
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An experiment on creating scenario profiles for software change
- 2000
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Ingår i: Annals of Software Engineering. - BUSSUM : BALTZER SCI PUBL BV. - 1022-7091 .- 1573-7489. ; 9:1-4, s. 59-78
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Tidskriftsartikel (refereegranskat)abstract
- Scenario profiles are used increasingly often for the assessment of quality attributes during the architectural design of software systems. However, the definition of scenario profiles is subjective and no data is available on the effects of individuals on scenario profiles. In this paper we present the design, analysis and results of a controlled experiment on the effect of individuals on scenario profiles, so that others can replicate the experiments on other projects and people. Both scenario profiles created by individuals and by groups are studied. The findings from the experiment showed that groups with prepared members proved to be the best method for creating scenario profiles. Unprepared groups did not perform better than individuals when creating scenario profiles.
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| 2. |
- Bengtsson, PerOlof, et al.
(författare)
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Analyzing Software Architectures for Modifiability
- 2000
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The software architecture plays an important role in achieving a modifiable system, but few methods for modifiability analysis exist. In this paper, we propose an analysis method for software architecture modifiability that has successfully been applied in several cases. The method consists of five main steps, i.e. goal selection, software architecture description, scenario elicitation, scenario evaluation and interpretation.
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| 3. |
- Bengtsson, PerOlof
(författare)
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Architecture-Level Modifiability Analysis
- 2002
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Cost, quality and lead-time are three main concerns in software engineering projects. The quality of developed software has traditionally been evaluated on completed systems. Evaluating the product quality at completion introduces a great risk of wasting effort on software products with inadequate system qualities. It is the objective of this thesis to define and study methods for assessment, evaluation and prediction of software systems’ modifiability characteristics based on their architecture designs. Since software architecture design is made early in the development, architecture evaluation helps detect inadequate designs and thus reduces the risk of implementing systems of insufficient quality. We present a method for architecture-level analysis of modifiability (ALMA) that analyses the modifiability potential of a software system based on its software architecture design. The method is scenario-based and either compares architecture candidates, assesses the risk associated with modifications of the architecture, or predicts the effort needed to implement anticipated modifications. The modification prediction results in three values; a prediction of the modification effort and the predicted best- and worst-case effort for the same system and change scenario profile. In this way the prediction method provides a frame-of-reference that supports the architect in the decision whether the modifiability is acceptable or not. The method is based on the experiences and results from one controlled experiment and seven case-studies, where five case studies are part of this thesis. The experiment investigates different ways to organize the scenario elicitation and finds that a group of individually prepared persons produce better profiles than individuals or unprepared groups.
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| 4. |
- Bengtsson, PerOlof
(författare)
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First Swedish Conference on Software Engineering Research and Practise
- 2001
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Konferensbidrag (refereegranskat)abstract
- Sweden is considered as a leading nation in modern IT business. The growth of software development business provides an opportunity to strengthen the software engineering research in Sweden even further. This conference is intended as a starting point for a national network on software engineering and provides opportunity to discuss the current situation in software engineering research. Besides that the conference present a forum for Ph. D. students to meet and exchange ideas.
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| 5. |
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| 6. |
- Bengtsson, PerOlof
(författare)
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SERP'01
- 2001
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Konferensbidrag (refereegranskat)abstract
- These proceedings comprise of eight peer-reviewed articles ranging from software engineering fields such as process improvement to component based development and software architecture.
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| 7. |
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| 8. |
- Lassing, Nico, et al.
(författare)
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Experiences with ALMA : Architecture-level modifiability analysis
- 2002
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Ingår i: Journal of Systems and Software. - NEW YORK : ELSEVIER SCIENCE INC. - 0164-1212 .- 1873-1228. ; 61:1, s. 47-57
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Tidskriftsartikel (refereegranskat)abstract
- Modifiability is an important quality for software systems, because a large part of the costs associated with these systems is spent on modifications. The effort, and therefore cost, that is required for these modifications is largely determined by a system's software architecture. Analysis of software architectures is therefore an important technique to achieve modifiability and reduce maintenance costs. However, few techniques for software architecture analysis currently exist. Based on our experiences with software architecture analysis of modifiability, we have developed ALMA, an architecture-level modifiability analysis method consisting of five steps. In this paper we report on our experiences with ALMA. We illustrate our experiences with examples from two case studies of software architecture analysis of modifiability. These case studies concern a system for mobile positioning at Ericsson Software Technology AB and a system for freight handling at DFDS Fraktarna. Our experiences are related to each step of the analysis process. In addition, we made some observations on software architecture analysis of modifiability in general. (C) 2002 Elsevier Science Inc. All rights reserved.
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| 9. |
- Lassing, Nico, et al.
(författare)
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Experiences with SAA of Modifiability
- 2000
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Modifiability is an important quality for software systems, because a large part of the costs associated with these systems is spent on modifications. The effort, and therefore cost, that is required for these modifications is largely determined by a system’s software architecture. Analysis of software architectures is therefore an important technique to achieve modifiability and reduce maintenance costs. However, few techniques for software architecture analysis currently exist. Based on our experiences with software architecture analysis of modifiability, we have developed an analysis method consisting of five steps. In this paper we report on our experiences with this method. We illustrate our experiences with examples from two case studies of SAA of modifiability. These case studies concern a system for mobile positioning at Ericsson Software Techology and a system for freight handling at DFDS Fraktarna. Our experiences are related to each step of the analysis process. In addition, we made some observations on SAA of modifiability in general.
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| 10. |
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