Method for Analysing Requirement Change Propagation based on a Modified Pagerank Algorithm

Grã‡ler, Iris; Thiele, Henrik; Oleff, Christian; Scholle, Philipp; Schulze, Veronika

doi:10.1017/dsi.2019.375

Cited by 3 publications

(8 citation statements)

References 14 publications

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“…Critical requirements are selected. Evaluation of the requirement network is based on the PageRank algorithm [55] (based on [62,63]). Context-specific adaptation of the original PageRank algorithm is required to account for the weighting of dependencies and requirement as well as the direction of dependencies.…”

Section: Analysis Of Requirement Networkmentioning

confidence: 99%

“…The computational logic of the PageRank algorithm was developed to determine a ranking of results for web search engines [64] and is highly efficient in analyzing a large number of network elements while considering higher order dependencies. Thus, the algorithm solves the problem of existing solution approaches, which have an exponential increase in required processing effort per network element added [63].…”

Section: Analysis Of Requirement Networkmentioning

confidence: 99%

“…The more exact the results of the dependency analysis are, the smaller the difference is to d = 1. In this context, d = 0.85 has been shown to be robust [63]. The equation for the modified page rank of a requirement is as follows:…”

Section: Analysis Of Requirement Networkmentioning

confidence: 99%

“…To derive a likelihood distribution, the Passive Rank is normed following the random surfer principle [63,64]. Each requirement's Passive Rank is divided by the maximum Passive Rank (cf.…”

Section: Endogenous Change Likelihoodmentioning

confidence: 99%

“…In this case, required computing power for dependency analysis has to be tested. The other steps are performed manually or based on the PageRank, which is proven to work efficiently for large datasets [63,64]. Therefore, no limitation of the feasibility is to be expected.…”

Section: Success Criterion Sc-2: Processability Of High Number Of Req...mentioning

confidence: 99%

See 4 more Smart Citations

Proactive Management of Requirement Changes in the Development of Complex Technical Systems

2022

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Requirement changes and cascading effects of change propagation are major sources of inefficiencies in product development and increase the risk of project failure. Proactive change management of requirement changes yields the potential to handle such changes efficiently. A systematic approach is required for proactive change management to assess and reduce the risk of a requirement change with appropriate effort in industrial application. Within the paper at hand, a novel method for Proactive Management of Requirement Changes (ProMaRC) is presented. It is developed in close collaboration with industry experts and evaluated based on workshops, pilot users’ feedback, three industrial case studies from the automotive industry and five development projects from research. To limit the application effort, an automated approach for dependency analysis based on the machine learning technique BERT and semi-automated assessment of change likelihood and impact using a modified PageRank algorithm is developed. Applying the method, the risks of requirement changes are assessed systematically and reduced by means of proactive change measures. Evaluation shows high performance of dependency analysis and confirms the applicability and usefulness of the method. This contribution opens up the research space of proactive risk management for requirement changes which is currently almost unexploited. It enables more efficient product development.

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Section: Analysis Of Requirement Networkmentioning

confidence: 99%

Section: Analysis Of Requirement Networkmentioning

confidence: 99%

Section: Analysis Of Requirement Networkmentioning

confidence: 99%

“…To derive a likelihood distribution, the Passive Rank is normed following the random surfer principle [63,64]. Each requirement's Passive Rank is divided by the maximum Passive Rank (cf.…”

Section: Endogenous Change Likelihoodmentioning

confidence: 99%

Section: Success Criterion Sc-2: Processability Of High Number Of Req...mentioning

confidence: 99%

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Proactive Management of Requirement Changes in the Development of Complex Technical Systems

2022

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Concepts of change propagation analysis in engineering design

Brahma

Wynn

2022

Res Eng Design

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Interest in change propagation analysis for engineering design has increased rapidly since the topic gained prominence in the late 1990s. Although there are now many approaches and models, there is a smaller number of underlying key concepts. This article contributes a literature review and organising framework that summarises and relates these key concepts. Approaches that have been taken to address each key concept are collected and discussed. A visual analysis of the literature is presented to uncover some trends and gaps. The article thereby provides a thematic analysis of state-of-the-art in design change propagation analysis, and highlights opportunities for further work.

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Method for Systematic Assessment of Requirement Change Risk in Industrial Practice

2020

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Requirement changes and cascading effects of change propagation are major sources of inefficiencies in product development and increase the risk of project failure. Risk management regarding these requirement changes yields the potential to handle such changes efficiently. Currently unlocked, a systematic approach is required for risk management to assess the risk of a requirement change with appropriate effort in industrial application. Within the paper at hand, a novel method for systematic assessment of requirement change risk is presented. It is developed in a multiple case study approach with three product development projects from different industrial branches. The change risk is assessed by combining change likelihood and change impact. Propagation effects are considered by analyzing requirement interrelations. To limit application effort, a tailorable approach towards assessment of change causes based on generalized influence factors and a pre-defined rule set for semi-automatized assessment of requirements interrelations is used. A software prototype is developed and implemented to enable evaluation and transfer to industrial application. The approach is evaluated using a combination of case study projects, stakeholder workshops, questionnaires and semi-structured interviews. Applying the method, the risks of requirement changes are assessed systematically, and subsequent risk management is enabled. The contribution at hand opens up the research space of risk management in handling requirement changes which is currently almost unexploited. At the same time, it enables more efficient product development.

show abstract

Method for Analysing Requirement Change Propagation based on a Modified Pagerank Algorithm

Cited by 3 publications

References 14 publications

Proactive Management of Requirement Changes in the Development of Complex Technical Systems

Proactive Management of Requirement Changes in the Development of Complex Technical Systems

Concepts of change propagation analysis in engineering design

Method for Systematic Assessment of Requirement Change Risk in Industrial Practice

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