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ACM Transactions on Modeling and Computer Simulation (TOMACS), Volume 18 Issue 1, December 2007

An adaptive approach to accelerated evaluation of highly available services
Chih-Chieh Hsu, Michael Devetsikiotis
Article No.: 1
DOI: 10.1145/1315575.1315576

We motivate and describe improved fast simulation techniques for the accelerated performance evaluation of highly available services. In systems that provide such services, service unavailability events are rare due to a low component failure rate...

Adaptive Newton-based multivariate smoothed functional algorithms for simulation optimization
Shalabh Bhatnagar
Article No.: 2
DOI: 10.1145/1315575.1315577

In this article, we present three smoothed functional (SF) algorithms for simulation optimization. While one of these estimates only the gradient by using a finite difference approximation with two parallel simulations, the other two are adaptive...

Sample-based estimation of correlation ratio with polynomial approximation
Daniel Lewandowski, Roger M. Cooke, Radboud J. Duintjer Tebbens
Article No.: 3
DOI: 10.1145/1315575.1315578

Sensitivity analysis has become a natural step in the uncertainty analysis framework. As there is no general sensitivity measure that would capture all information on impact of input factors on model output, analysts tend to combine various...

Development of a simulation model of colorectal cancer
Stephen Roberts, Lijun Wang, Robert Klein, Reid Ness, Robert Dittus
Article No.: 4
DOI: 10.1145/1315575.1315579

Colorectal cancer (CRC) is deadly if not found early. Any protocols developed for screening and surveillance and any policy decisions regarding the availability of CRC resources should consider the nature of the disease and its impact over time on...