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  • 1. Cedergren, Stefan
    et al.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Wall, Anders
    Norström, Christer
    RISE, Swedish ICT, SICS.
    Towards Integrating Perceived Customer Value in the Evaluation of Performance in Product Development2010Conference paper (Refereed)
    Abstract [en]

    Product delivering companies invest resources in product development activities in order to create value. Still, when performance in product development is to be evaluated, time, cost, and quality are in focus, especially in the later stages of the development when it is expensive and difficult to make any changes. Time, cost, and quality are important dimensions of performance but they are not revealing the complete picture. Missing is the value perspective. This paper outlines a method for how perceived customer value can be used to evaluate performance in product development and describes how it is verified through a case study. By using the perceived customer value of requirements, the value propagation throughout the development is possible to monitor based on both market and scope changes. In addition, a measure of productivity can be calculated by relating the perceived value to the spent effort. This information is used in order to visualize the value propagation and performance during the development. Hence, through this method it is possible to evaluate the productivity of activities from initial ideas to a final product. The paper is concluded with a discussion of managerial implications and how this method contributes to theory.

  • 2.
    Fröberg, Joakim
    et al.
    RISE, Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Dersten, Sara
    Nordlander, Per-Åke
    BAE Systems AB, Sweden.
    Defining a method for identifying architectural candidates as part of engineering a system architecture2014Conference paper (Refereed)
    Abstract [en]

    Engineering system architectures for complex systems involves the tasks of analyzing architectural drivers, identifying architectural concerns, identifying valid architecture candidates, and evaluation of alternatives. One problem to overcome when architecting a system is the identification of valid of architectural candidates. We have developed a step-wise method for performing system architecture analysis and tested it on a sub-system in a project developing a drive system for heavy automotive applications. In this paper we present the complete method of nine steps for engineering an architecture and we elaborate in detail on the procedure to identify architectural candidates based on previously identified architectural drivers. We present a diagram depicting the proposed information model, its concepts and their relationships. In addition, the expectations on such a method as expressed by practitioners have been elicited, and we elaborate on the validity by examining how well the method indicate fulfillment. Our conclusion is that the proposed method does not fail to deliver on any of the needs and this gives an indication of usefulness. When identifying architectural candidates it is important to use proper criteria in the process. Our conclusion is that the practitioners should focus on candidates that affect the system at hand (within system boundaries), and on the candidates that address the architecturally significant system use. This is reflected in our method where we prescribe evaluation of the design candidates by validating that they solve only the right problem and by ensuring that they address the system at hand.

  • 3.
    Fröberg, Joakim
    et al.
    RISE, Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Marklund, Ulf
    Boliden Mines, Sweden.
    Analyzing Improvements for a Mine Maintenance System of Connected Equipment and Machines - The Value and Benefits of Data Sharing2015In: 2015 IEEE International Symposium on Systems Engineering (ISSE), 2015, 16, p. 237-241, article id 7302763Conference paper (Refereed)
    Abstract [en]

    A modern mine involves increasingly smart and connected products that are integrated in a mine automation system. Integration enable many possible applications that could substantially aid in achieving the goals of increased safety and productivity of the mine operation including the machine maintenance process. What data will be shared by the involved organizations and products, heavily affects how successful improvements of operation can be accommodated. We have devised a method to map out and evaluate envisioned new collaborative functions for a complex System-of-systems such as the mine maintenance operation. The proposed method map user stories for the involved stakeholders and estimate the value of fulfillment based on different candidates of data sharing architectures. The method is explained and exemplified by a realistic example based the real case. There seems to be a need for a method such as the presented one just to map out what new applications are really feasible. By estimating value in terms of stakeholder benefits and identifying possible showstoppers in terms of protected data, the method seems to help reveal what improvements in the mine operation is in fact possible. Deciding on a data-sharing architecture for a collaborative mine seems to provide useful design prerequisites to a developing organization improving their smart connected products.

  • 4.
    Larsson, Stig
    et al.
    RISE, Swedish ICT, SICS.
    Ranjbar, Zohreh
    RISE, Swedish ICT, SICS.
    Service idag och i framtiden: slutrapport för projektet Framtidens Underhållstekniker2016Report (Other academic)
    Abstract [sv]

    Detta projekt har haft som mål att undersöka möjligheten att genomföra ett FUI-projekt som fokuserar på hur framtidens service- och underhållstekniker arbetar. Projektet har undersökt fler processindustrier för att kartlägga synergier mellan olika branscher vad gäller innovationer och förbättringar för framtidens service- och underhållstekniker. Projektet har drivits av SICS Swedish ICT i samarbete med SSAB och ABB Service. Prevas och ATM Notation har dessutom deltagit som leverantör av varor och tjänster. Projektet har stämt av deltagarnas visioner mot existerande underhållslösningar och tillgänglig teknik. Vi har också identifierat behov av ytterligare innovationer inom processer, metoder och teknik. Projektet ingår i Strategiska innovationsprogrammet Processindustriell IT och Automation, PiiA, med stöd från VINNOVA.

  • 5.
    Tahvili, Sahar
    et al.
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Afzal, Wasif
    Mälardalen University, Sweden.
    Saadatmand, Mehrdad
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Bohlin, Markus
    RISE - Research Institutes of Sweden, ICT, SICS.
    Sundmark, Daniel
    Mälardalen University, Sweden.
    Larsson, Stig
    Towards Earlier Fault Detection by Value-Driven Prioritization of Test Cases Using Fuzzy TOPSIS2016In: Information Technology: New Generations, 2016, 9, Vol. 448, p. 745-759Conference paper (Refereed)
    Abstract [en]

    In industrial software testing, development projects typically set up and maintain test suites containing large numbers of test cases. Executing a large number of test cases can be expensive in terms of effort and wall-clock time. Moreover, indiscriminate execution of all available test cases typically lead to sub-optimal use of testing resources. On the other hand, selecting too few test cases for execution might leave a large number of faults undiscovered. Limiting factors such as allocated budget and time constraints for testing further emphasizes the importance of test case prioritization in order to identify test cases that enable earlier detection of faults while respecting such constraints. In this paper, we propose a multi-criteria decision making approach for prioritizing test cases in order to detect faults earlier. This is achieved by applying the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) decision making technique combined with fuzzy principles. Our solution is based on important criteria such as fault detection probability, execution time, complexity, and other test case properties. By applying the approach on a train control management subsystem from Bombardier Transportation in Sweden, we demonstrate how it helps, in a systematic way, to identify test cases that can lead to early detection of faults while respecting various criteria.

  • 6.
    Tahvili, Sahar
    et al.
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Bohlin, Markus
    RISE - Research Institutes of Sweden, ICT, SICS.
    Saadatmand, Mehrdad
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Afzal, Wasif
    Mälardalen University, Sweden.
    Sundmark, Daniel
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Cost-Benefit Analysis of Using Dependency Knowledge at Integration Testing2016In: Product-Focused Software Process Improvement / [ed] Pekka Abrahamsson, Andreas Jedlitschka, Anh Nguyen Duc, Michael Felderer, Sousuke Amasaki, Tommi Mikkonen, 2016, 7, Vol. 10027, p. 268-284Conference paper (Refereed)
    Abstract [en]

    In software system development, testing can take considerable time and resources, and there are numerous examples in the literature of how to improve the testing process. In particular, methods for selection and prioritization of test cases can play a critical role in efficient use of testing resources. This paper focuses on the problem of selection and ordering of integration-level test cases. Integration testing is performed to evaluate the correctness of several units in composition. Further, for reasons of both effectiveness and safety, many embedded systems are still tested manually. To this end, we propose a process, supported by an online decision support system, for ordering and selection of test cases based on the test result of previously executed test cases. To analyze the economic efficiency of such a system, a customized return on investment (ROI) metric tailored for system integration testing is introduced. Using data collected from the development process of a large-scale safety-critical embedded system, we perform Monte Carlo simulations to evaluate the expected ROI of three variants of the proposed new process. The results show that our proposed decision support system is beneficial in terms of ROI at system integration testing and thus qualifies as an important element in improving the integration testing process.

  • 7.
    Tahvili, Sahar
    et al.
    RISE, Swedish ICT, SICS.
    Saadatmand, Mehrdad
    RISE, Swedish ICT, SICS.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Afzal, Wasif
    Mälardalen University, Sweden.
    Bohlin, Markus
    RISE - Research Institutes of Sweden, ICT, SICS.
    Sundmark, Daniel
    RISE, Swedish ICT, SICS. Mälardalen University, Sweden.
    Dynamic Integration Test Selection Based on Test Case Dependencies2016In: 2016 IEEE Ninth International Conference on Software Testing, Verification and Validation Workshops (ICSTW), 2016, 15, p. 277-286Conference paper (Refereed)
    Abstract [en]

    Prioritization, selection and minimization of test cases are well-known problems in software testing. Test case prioritization deals with the problem of ordering an existing set of test cases, typically with respect to the estimated likelihood of detecting faults. Test case selection addresses the problem of selecting a subset of an existing set of test cases, typically by discarding test cases that do not add any value in improving the quality of the software under test. Most existing approaches for test case prioritization and selection suffer from one or several drawbacks. For example, they to a large extent utilize static analysis of code for that purpose, making them unfit for higher levels of testing such as integration testing. Moreover, they do not exploit the possibility of dynamically changing the prioritization or selection of test cases based on the execution results of prior test cases. Such dynamic analysis allows for discarding test cases that do not need to be executed and are thus redundant. This paper proposes a generic method for prioritization and selection of test cases in integration testing that addresses the above issues. We also present the results of an industrial case study where initial evidence suggests the potential usefulness of our approach in testing a safety-critical train control management subsystem.

  • 8. Wallin, Peter
    et al.
    Larsson, Stig
    RISE, Swedish ICT, SICS.
    Fröberg, Joakim
    RISE, Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    Axelsson, Jakob
    RISE, Swedish ICT, SICS, Software and Systems Engineering Laboratory.
    Problems and their mitigation in system and software architecting2012In: Information and Software Technology, Vol. 54, p. 686-700Article in journal (Refereed)
    Abstract [en]

    Context: Today, software and embedded systems act as enablers for developing new functionality in traditional industries such as the automotive, process automation, and manufacturing automation domains. This differs from 25–30 years ago when these systems where based on electronics and electro-mechanical solutions. The architecture of the embedded system and of the software is important to ensure the qualities of these applications. However, the effort of designing and evolving the architecture is in practice often neglected during system development, whilst development efforts are centered on implementing new functionality. Objective: We present problems and success factors that are central to the architectural development of software intensive systems in the domain of automotive and automation products as judged by practitioners. Method: The method consisted of three steps. First, we used semi-structured interviews to collect data in an exploratory manner. As a second step, a survey based on problems extracted from the interview data was used to investigate the occurrence of these problems at a wider range of organizations. In order to identify and suggest how to mitigate the problems that were considered important, we finally performed root cause analysis workshops, and from these a number of success factors were elicited. Results: A total of 21 problems have been identified based on the interview data, and these are related to the technical, organizational, project, and agreement processes. Based on the survey results, the following four problems were selected for a root cause analysis: (1) there is a lack of process for architecture development, (2) there is a lack of method or model to evaluate the business value when choosing the architecture, (3) there is a lack of clear long-term architectural strategy, and (4) processes and methods are less valued than knowledge and competence of individuals. Conclusion: In conclusion, the following identified success factors are crucial components to be successful in developing software intensive systems: (1) define an architectural strategy, (2) implement a process for architectural work, (3) ensure authority for architects, (4) clarify the business impact of the architecture, and (5) optimize on the project portfolio level instead of optimizing each project.

1 - 8 of 8
CiteExportLink to result list
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Cite
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  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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