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A data warehouse environment for storing and analyzing simulation output data

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3 Author(s)
Vasilakis, C. ; Harrow Sch. of Comput. Sci., Univ. of Westminster, Harrow, UK ; El-Darzi, E. ; Chountas, P.

Discrete event simulation modelling has been extensively used in modelling complex systems. Although it offers great conceptual-modelling flexibility, it is both computationally expensive and data intensive. There are several examples of simulation models that generate millions of observations to achieve satisfactory point and confidence interval estimations for the model variables. In these cases, it is exceptionally cumbersome to conduct the required output and sensitivity analysis in a spreadsheet or statistical package. In this paper, we highlight the advantages of employing data warehousing techniques for storing and analyzing simulation output data. The proposed data warehouse environment is capable of providing the means for automating the necessary algorithms and procedures for estimating different parameters of the simulation. These include initial transient in steady-state simulations and point and confidence interval estimations. Previously developed models for evaluating patient flow through hospital departments are used to demonstrate the problem and the proposed solutions.

Published in:

Simulation Conference, 2004. Proceedings of the 2004 Winter  (Volume:1 )

Date of Conference:

5-8 Dec. 2004

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