Results 1  10
of
187
Generalized Likelihood Ratio Statistics And Wilks Phenomenon
, 2000
"... this paper. We introduce the generalized likelihood statistics to overcome the drawbacks of nonparametric maximum likelihood ratio statistics. New Wilks phenomenon is unveiled. We demonstrate that a class of the generalized likelihood statistics based on some appropriate nonparametric estimators are ..."
Abstract

Cited by 138 (25 self)
 Add to MetaCart
this paper. We introduce the generalized likelihood statistics to overcome the drawbacks of nonparametric maximum likelihood ratio statistics. New Wilks phenomenon is unveiled. We demonstrate that a class of the generalized likelihood statistics based on some appropriate nonparametric estimators are asymptotically distribution free and follow
Consistent Specification Testing With Nuisance Parameters Present Only Under The Alternative
, 1995
"... . The nonparametric and the nuisance parameter approaches to consistently testing statistical models are both attempts to estimate topological measures of distance between a parametric and a nonparametric fit, and neither dominates in experiments. This topological unification allows us to greatly ex ..."
Abstract

Cited by 92 (13 self)
 Add to MetaCart
. The nonparametric and the nuisance parameter approaches to consistently testing statistical models are both attempts to estimate topological measures of distance between a parametric and a nonparametric fit, and neither dominates in experiments. This topological unification allows us to greatly extend the nuisance parameter approach. How and why the nuisance parameter approach works and how it can be extended bears closely on recent developments in artificial neural networks. Statistical content is provided by viewing specification tests with nuisance parameters as tests of hypotheses about Banachvalued random elements and applying the Banach Central Limit Theorem and Law of Iterated Logarithm, leading to simple procedures that can be used as a guide to when computationally more elaborate procedures may be warranted. 1. Introduction In testing whether or not a parametric statistical model is correctly specified, there are a number of apparently distinct approaches one might take. T...
Jump and Sharp Cusp Detection By Wavelets
 Recent Research on the Nitinol Alloys and Their Potential Application in Ocean Engineering,” Ocean Engineering
, 1995
"... this paper we consider only jump and sharp cusp detection in one dimension. There is a great amount of statistical literature on changepoints (Basseville, 1988; Basseville & Nikiforov, 1993). Wahba (1984) and Engle, Granger, Rice &Weiss (1986) were the first to estimate curves with disconti ..."
Abstract

Cited by 44 (2 self)
 Add to MetaCart
this paper we consider only jump and sharp cusp detection in one dimension. There is a great amount of statistical literature on changepoints (Basseville, 1988; Basseville & Nikiforov, 1993). Wahba (1984) and Engle, Granger, Rice &Weiss (1986) were the first to estimate curves with discontinuities in derivatives, assuming the locations of the jumps are known. McDonald & Owen (1986) proposed an algorithm to compute estimates of regression functions when discontinuities are present. Yin (1988) used onesided moving averages to find the locations of jumps in a function. Lombard (1988) described jump detection by Fourier analysis. Cline & Hart (1991) considered detecting jumps in derivatives. Muller (1992) estimated the location of a jump and its jump size by boundary kernels. Eubank & Speckman (1994) used a semiparametric approach to detect the discontinuities in derivatives of regression functions. Hall & Titterington (1992) studied edgepreserving and peakpreserving by smoothing. Grossmann (1986) and Mallat & Hwang (1992) used wavelet transformation to detect singularities and edges in computer images. The paper is organized as follows. Sections 2 and 3 introduce the white noise model and wavelet transformation, respectively. Testing hypotheses and estimation are considered in Sections 4 and 5. Section 6 discusses implementation of the detection in practice. Simulation results and an application to a real example are reported in this section. Concluding remarks are given in Section 7. Proofs are collected in the Appendix. 2. THE WHITE NOISE MODEL
Bootstrap confidence bands for regression curves and their derivatives
 Ann. Statist
, 2003
"... Confidence bands for regression curves and their first p derivatives are obtained via local pth order polynomial estimation. The method allows for multiparameter local likelihood estimation as well as other unbiased estimating equations. As an alternative to the confidence bands obtained by asympt ..."
Abstract

Cited by 38 (2 self)
 Add to MetaCart
Confidence bands for regression curves and their first p derivatives are obtained via local pth order polynomial estimation. The method allows for multiparameter local likelihood estimation as well as other unbiased estimating equations. As an alternative to the confidence bands obtained by asymptotic distribution theory, we also study smoothed bootstrap confidence bands. Simulations illustrate the finite sample properties of the methodology.
A simple approach to the parametric estimation of potentially nonstationary diffusions
 Journal of Econometrics
, 2007
"... www.elsevier.com/locate/jeconom A simple approach to the parametric estimation of potentially nonstationary diffusions $ ..."
Abstract

Cited by 35 (5 self)
 Add to MetaCart
www.elsevier.com/locate/jeconom A simple approach to the parametric estimation of potentially nonstationary diffusions $
2008): “On Deconvolution with Repeated Measurements
 Annals of Statistics
"... In a large class of statistical inverse problems it is necessary to suppose that the transformation that is inverted is known. Although, in many applications, it is unrealistic to make this assumption, the problem is often insoluble without it. However, if additional data are available, then it is p ..."
Abstract

Cited by 34 (3 self)
 Add to MetaCart
In a large class of statistical inverse problems it is necessary to suppose that the transformation that is inverted is known. Although, in many applications, it is unrealistic to make this assumption, the problem is often insoluble without it. However, if additional data are available, then it is possible to estimate consistently the unknown error density. Data are seldom available directly on the transformation, but repeated, or replicated, measurements increasingly are becoming available. Such data consist of “intrinsic ” values that are measured several times, with errors that are generally independent. Working in this setting we treat the nonparametric deconvolution problems of density estimation with observation errors, and regression with errors in variables. We show that, even if the number of repeated measurements is quite small, it is possible for modified kernel estimators to achieve the same level of performance they would if the error distribution were known. Indeed, density and regression estimators can be constructed from replicated data so that they have the same firstorder properties as conventional estimators in the knownerror case, without any replication, but with sample size equal to the sum of the numbers of replicates. Practical methods for constructing estimators with these properties are suggested, involving empirical rules for smoothingparameter choice. 1. Introduction. Statistical
Inference of Trends in Time Series
 J. the Royal Statistical Society: Series B (Statistical Methodology
, 2007
"... Summary. We consider statistical inference of trends in mean nonstationary models. A test statistic is proposed for the existence of structural breaks in trends. On the basis of a strong invariance principle of stationary processes, we construct simultaneous confidence bands with asymptotically cor ..."
Abstract

Cited by 32 (13 self)
 Add to MetaCart
Summary. We consider statistical inference of trends in mean nonstationary models. A test statistic is proposed for the existence of structural breaks in trends. On the basis of a strong invariance principle of stationary processes, we construct simultaneous confidence bands with asymptotically correct nominal coverage probabilities. The results are applied to global warming temperature data and Nile river flow data. Our confidence band of the trend of the global warming temperature series supports the claim that the trend is increasing over the last 150 years.
Some Statistical Pitfalls in Copula Modelling for Financial Applications
 in Klein, E. (ed), Capital Formation, Governance and Banking (New
, 2005
"... In this paper we discuss some statistical pitfalls that may occur in modeling crossdependences with copulas in financial applications. In particular we focus on issues arising in the estimation and the empirical choice of copulas as well as in the design of timedependent copulas. ..."
Abstract

Cited by 27 (2 self)
 Add to MetaCart
(Show Context)
In this paper we discuss some statistical pitfalls that may occur in modeling crossdependences with copulas in financial applications. In particular we focus on issues arising in the estimation and the empirical choice of copulas as well as in the design of timedependent copulas.
Goodnessoffit tests via phidivergences
, 2006
"... A unified family of goodnessoffit tests based on φdivergences is introduced and studied. The new family of test statistics Sn(s) includes both the supremum version of the Anderson–Darling statistic and the test statistic of Berk and Jones [Z. Wahrsch. Verw. Gebiete 47 (1979) 47–59] as special cas ..."
Abstract

Cited by 27 (2 self)
 Add to MetaCart
(Show Context)
A unified family of goodnessoffit tests based on φdivergences is introduced and studied. The new family of test statistics Sn(s) includes both the supremum version of the Anderson–Darling statistic and the test statistic of Berk and Jones [Z. Wahrsch. Verw. Gebiete 47 (1979) 47–59] as special cases (s = 2 and s = 1, resp.). We also introduce integral versions of the new statistics. We show that the asymptotic null distribution theory of Berk