Showing 1 - 8 of 8
Linear regression analysis is important in many fields. In the analysis of simulation results, a regression (meta)model can be applied, even when common pseudorandom numbers are used. To test the validity of the specified regression model, Rao (1959) generalized the F statistic for lack of fit,...
Persistent link: https://www.econbiz.de/10009214667
To analyze simulation runs which use the same random numbers, the blocking concept of experimental design is not needed. Instead, this paper applies a linear regression model with a nondiagonal covariance matrix. This covariance matrix does not need to have a specific pattern such as constant...
Persistent link: https://www.econbiz.de/10009214693
Trace-driven (or correlated inspection) simulation means that the simulated and the real systems have some common inputs (say, historical arrival times) so that the two systems' outputs are cross-correlated. To validate such a simulation, this paper focuses on the difference between the average...
Persistent link: https://www.econbiz.de/10009203971
This paper argues that it is wrong to require that regressing the outputs of a trace-driven simulation on the observed real outcomes should give a 45° (unit slope) line through the origin (zero intercept). This note proposes instead an alternative requirement: the responses of the simulated and...
Persistent link: https://www.econbiz.de/10009204385
This paper describes the use of multiple ranking procedures to analyze data generated from computer simulation experiments with models of management systems. After outlining the rationale for the use of multiple ranking procedures with computer simulation experiments and defining some basic...
Persistent link: https://www.econbiz.de/10009189527
In the recent issue of Management Science Fox (Fox, B. 1978. Estimation and simulation. Management Sci. 24 (8, April) 860-861.) expressed doubts about the relevance of steady-state behavior. In a reply Schruben (Schruben, L. W. 1978. Reply to Fox. Management Sci. 24 (8, April) 862.) disagreed on...
Persistent link: https://www.econbiz.de/10009197454
Vector computers provide a new tool for management scientists. The application of that tool requires thinking in vector mode. This mode is examined in the context of Monte Carlo experiments with regression models; these regression models may serve as metamodels in simulation experiments. The...
Persistent link: https://www.econbiz.de/10009197578
Two simple variance reduction techniques are discussed, viz. antithetic variates and common random numbers. Their joint application creates undesirable negative correlations between the responses of two simulated systems. Therefore three alternatives are considered: antithetics only, common...
Persistent link: https://www.econbiz.de/10009198011