BAYESIAN ESTIMATORS, ROBUST ESTIMATORS: A COMPARISON AND SOME ASYMPTOTIC RESULTS
نویسندگان
چکیده
منابع مشابه
Improving the quality of ultrasound images using Bayesian estimators
Medical ultrasound imaging due to close behavior of cancer tumors to body tissues has a low contrast. This problem with synthetic aperture imaging method has been addressed. Although the synthetic aperture imaging technique solved the low-contrast problem of ultrasound images, to an acceptable limit, but the performance of these methods is not even acceptable when the signal to noise ratio (SNR...
متن کاملOn the Asymptotic Efficiency of Approximate Bayesian Computation Estimators
Many statistical applications involve models for which it is difficult to evaluate the likelihood, but from which it is relatively easy to sample. Approximate Bayesian computation is a likelihood-free method for implementing Bayesian inference in such cases. We present results on the asymptotic variance of estimators obtained using approximate Bayesian computation in a large-data limit. Our key...
متن کاملAsymptotic properties of parallel Bayesian kernel density estimators
In this article we perform an asymptotic analysis of Bayesian parallel kernel density estimators introduced by Neiswanger, Wang and Xing [19]. We derive the asymptotic expansion of the mean integrated squared error for the full data posterior estimator and investigate the properties of asymptotically optimal bandwidth parameters. Our analysis demonstrates that partitioning data into subsets req...
متن کاملAsymptotic Properties of some Non-parametric Hyperbolic Efficiency Estimators
A hyperbolic measure of technical efficiency was proposed by Färe et al. (1985) wherein efficiency is measured by the simultaneous maximum, feasible reduction in input quantities and increase in output quantities. In cases where returns to scale are not constant, the non-parametric data envelopment analysis (DEA) estimator of hyperbolic efficiency cannot be written as a linear program; conseque...
متن کاملAsymptotic relative efficiency of estimators
For statistical estimation problems, it is typical and even desirable that more than one reasonable estimator can arise for consideration. One natural and time-honored approach for choosing an estimator is simply to compare the sample sizes at which the competing estimators meet a given standard of performance. This depends upon the chosen measure of performance and upon the particular populati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ETS Research Report Series
سال: 1984
ISSN: 2330-8516
DOI: 10.1002/j.2330-8516.1984.tb00082.x