nuisance parameter

nuisance parameter

[′nü·səns pə‚ram·əd·ər]
(statistics)
A parameter to be estimated by a statistic which arises in the distribution of the statistic under some hypothesis to be tested about the parameter.
References in periodicals archive ?
This type of model arises when knowledge of all measurement variables is subject to significant error, and the model assumes a true value for each variable, which is to be estimated at least as a nuisance parameter.
The "curse of dimensionality" is always the main obstacle in parameter estimation in EVM problems, as the number of nuisance parameters is usually large.
For example, the HPD contours in the first example show nonsymmetrical and non-standard distributions that are expected for EVM problems; moreover, exact shape of the marginal distributions for all parameters including the nuisance parameters are directly obtained.
Optimal Tests When a Nuisance Parameter Is Present Only under the Alternative.
Hypothesis Testing When a Nuisance Parameter Is Present Only under the Alternative.
Inference When a Nuisance Parameter Is Not Identified under the Null Hypothesis.
We are interested primarily in estimating the association between A(t) and survival, [beta], while treating as nuisance parameters the underlying hazard functions,
A regression of x on z recovers the nuisance parameters [x.
Since the nuisance parameters appear only in the second sum in (6), while [Alpha] and [Beta] appear only in the first sum, [Alpha] and [Beta] can be estimated in this case without estimating the nuisance parameters.
Unlike the one in (6), the log likelihood function in (8) is not separable in the nuisance parameters of the distribution Pr([x.
Consequently, the three important parameters, the reaction order, the reaction rate constant and the apparent diffusion coefficient, together with nuisance parameters, were estimated using the Metropolis-Hastings algorithm, which is one of the Markov Chain Monte Carlo (MCMC) methods (Bates and Campbell, 2001; Bell et al.
Then, the prior distributions of [ohm], and the nuisance parameters [ohm] and [r.