the National Natural Science Foundation of China (Grant No. 40674003);a Grant-in-Aid for Scientific Research (Grant No. B19340129);the Project From Science and Technology Commission of Shanghai Municipality (Grant No. 06DZ22101)
The stochastic model plays an important role in parameter estimation. The optimal estimator in the sense of least squares can only be obtained by using the correct stochastic model and consequently guarantees the prec...