The efficiency of control variates in multiresponse simulation

@inproceedings{Venkatraman1986TheEO,
  title={The efficiency of control variates in multiresponse simulation},
  author={Sekhar Venkatraman and James R. Wilson},
  year={1986}
}
When control variates are applied to a simulation with multiple responses some of the potential effeciency improvement is lost if the optimal control coefficients must be estimated. To quantify this phenomenon, we formulate a variance ratio and a loss factor that are substantially simpler than the corresponding efficiency measures developed recently by Rubinstein and Marcus [12].