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2016 | OriginalPaper | Chapter

Analysis of Enterprise Architecture Evolution Using Markov Decision Processes

Authors : Sérgio Guerreiro, Khaled Gaaloul, Ulrik Franke

Published in: Enterprise and Organizational Modeling and Simulation

Publisher: Springer International Publishing

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Abstract

Enterprise architecture (EA) offers steering instruments to aid architects in their decision-making process. However, the management of such a process is a challenging task for enterprise architects, due to the complex dependencies amongst EA models when evolving from an initial to a subsequent state. In this paper, we design, present and analyze an approach supporting EA model evolution. In doing so, we define EA artifacts dependencies and model their corresponding evolutions during change. Then, this model is processed using a feedback control schema to fully inform the EA design decisions. An access control model for an inventory case study is introduced to reason on issues connected to this evolution. The results obtained by a stochastic solution (Markov Decision Processes) are used to argue about the usefulness and applicability of our proposal.

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http://www.demo.nl/.

SoD concept prohibits the assignment of role/responsibility to a single person for the acquisition of assets, their custody, and the related record keeping.

Clearly, how to elicit these probabilities is a key issue for applying the method. Having developed the formalism in this paper, probability elicitation is an important future work to be addressed in industrial case studies. Here, let us just note that it will probably involve a combination of manual analytical methods such as identifying forbidden transitions and setting their probabilities to 0, data-driven methods such as using historical data to find probabilities and expert methods such as surveys (cf. [29] for an example in the EA context) and interviews (cf. [30] for an example in the EA context).

The need to estimate rewards could also be found in literature, e.g., [31] proposes an EA support tool where the score of a given architecture solution should be indicated by the architect. See also [32] for a discussion of utility in EA evaluation.

Toolbox public available at http://www7.inra.fr/mia/T/MDPtoolbox.

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Title: Analysis of Enterprise Architecture Evolution Using Markov Decision Processes
Authors: Sérgio Guerreiro
Khaled Gaaloul
Ulrik Franke
Publisher: Springer International Publishing
Book: Enterprise and Organizational Modeling and Simulation
Print ISBN: 978-3-319-49453-1

Electronic ISBN: 978-3-319-49454-8

Copyright Year: 2016
DOI: https://doi.org/10.1007/978-3-319-49454-8_3

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