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Enterprise architecture analysis with extended influence diagrams
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0002-3293-1681
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.ORCID iD: 0000-0003-3089-3885
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
KTH, School of Electrical Engineering (EES), Industrial Information and Control Systems.
2007 (English)In: Information Systems Frontiers, ISSN 1387-3326, E-ISSN 1572-9419, Vol. 9, no 2-3, 163-180 p.Article in journal (Refereed) Published
Abstract [en]

The discipline of enterprise architecture advocates the use of models to support decision-making on enterprise-wide information system issues. In order to provide such support, enterprise architecture models should be amenable to analyses of various properties, as e.g. the level of enterprise information security. This paper proposes the use of a formal language to support such analysis. Such a language needs to be able to represent causal relations between, and definitions of, various concepts as well as uncertainty with respect to both concepts and relations. To support decision making properly, the language must also allow the representation of goals and decision alternatives. This paper evaluates a number of languages with respect to these requirements, and selects influence diagrams for further consideration. The influence diagrams are then extended to fully satisfy the requirements. The syntax and semantics of the extended influence diagrams are detailed in the paper, and their use is demonstrated in an example.

Place, publisher, year, edition, pages
2007. Vol. 9, no 2-3, 163-180 p.
Keyword [en]
enterprise architecture models, formal language, influence diagrams, DECISION-ANALYSIS
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-12328DOI: 10.1007/s10796-007-9030-yISI: 000247193400004Scopus ID: 2-s2.0-34250193990OAI: oai:DiVA.org:kth-12328DiVA: diva2:309729
Note
onference: 10th IEEE International Enterprise Distributed Object Computing Conference. Hong Kong, PEOPLES R CHINA. OCT 16-20, 2006 Available from: 2010-04-08 Created: 2010-04-08 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Enterprise Systems Modifiability Analysis: An Enterprise Architecture Modeling Approach for Decision Making
Open this publication in new window or tab >>Enterprise Systems Modifiability Analysis: An Enterprise Architecture Modeling Approach for Decision Making
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Contemporary enterprises depend to great extent on software systems. During the past decades the number of systems has been constantly increasing and these systems have become more integrated with one another. This has lead to a growing complexity in managing software systems and their environment. At the same time business environments today need to progress and change rapidly to keep up with evolving markets. As the business processes change, the systems need to be modified in order to continue supporting the processes.

The complexity increase and growing demand for rapid change makes the management of enterprise systems a very important issue. In order to achieve effective and efficient management, it is essential to be able to analyze the system modifiability (i.e. estimate the future change cost). This is addressed in the thesis by employing architectural models. The contribution of this thesis is a method for software system modifiability analysis using enterprise architecture models. The contribution includes an enterprise architecture analysis formalism, a modifiability metamodel (i.e. a modeling language), and a method for creating metamodels. The proposed approach allows IT-decision makers to model and analyze change projects. By doing so, high-quality decision support regarding change project costs is received.

This thesis is a composite thesis consisting of five papers and an introduction. Paper A evaluatesa number of analysis formalisms and proposes extended influence diagrams to be employed for enterprise architecture analysis. Paper B presents the first version of the modifiability metamodel. InPaper C, a method for creating enterprise architecture metamodels is proposed. This method aims to be general, i.e. can be employed for other IT-related quality analyses such as interoperability, security, and availability. The paper does however use modifiability as a running case. The second version of the modifiability metamodel for change project cost estimation is fully described in Paper D. Finally, Paper E validates the proposed method and metamodel by surveying 110 experts and studying 21 change projects at four large Nordic companies. The validation indicates that the method and metamodel are useful, contain the right set of elements and provide good estimation capabilities.

Place, publisher, year, edition, pages
Stockholm: KTH, 2010. x, 29 p.
Series
Trita-EE, ISSN 1653-5146 ; 2010:14
Keyword
Enterprise Architecture, Software System Modifiability, Decision Making, Metamodeling, Enterprise Architecture Analysis, Software Change Cost Estimation
National Category
Other Computer and Information Science
Identifiers
urn:nbn:se:kth:diva-12341 (URN)
Public defence
2010-04-20, Room F3, Lindstedtsv 2, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC20100716Available from: 2010-04-09 Created: 2010-04-08 Last updated: 2010-07-16Bibliographically approved

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Johnson, PontusLagerström, Robert

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