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An Approach to Modelling Information System Availability by Using Bayesian Belief Network

Semir Ibrahimović and Nijaz Bajgorić

A chapter in Proceedings of the ENTRENOVA - ENTerprise REsearch InNOVAtion Conference, Kotor, Montengero, 10-11 September 2015, 2015, pp 242-250 from IRENET - Society for Advancing Innovation and Research in Economy, Zagreb

Abstract: In today's era of the ubiquitous use of information technology (IT), it is expected that the information systems provide services to end-users on continuous basis, regardless of time and location. This is especially true in organizations where information systems (IS) support real-time critical operations, particularly, in the industries in which these systems must continuously operate 24x7x365. This paper presents a modified Bayesian Belief Network model for predicting IS availability. Based on a thorough review of all IS availability dimensions, we proposed a modified set of determinants. The model is parametrized using probability elicitation process with the participation of experts from the BiH financial sector. The results showed that most influential determinants of the IS availability are a timely and precise definition of the availability requirements, quality of IT operations, management and network.

Keywords: Information Systems; Business Continuity; Availability; Bayesian Belief Network; Monte-Carlo Simulation (search for similar items in EconPapers)
JEL-codes: M15 (search for similar items in EconPapers)
Date: 2015
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