نتایج جستجو برای: local variance

تعداد نتایج: 632175  

2007
Robert L. Paige Shan Sun Keyi Wang

We develop a variance reduction method for smoothing splines. We do this by showing that the quadratic interpolation method introduced in Cheng et al. (2006), for local linear estimators, also works for smoothing splines. For a given point of estimation, Cheng et al. (2006) define a variance-reduced local linear estimate as a linear combination of classical estimates at three nearby points. We ...

2010
Carlos C. António Luísa N. Hoffbauer

The uncertainty propagation of composite structures is investigated considering descriptive statistical measures of the response variability. A study based on sensitivity to uncertainty that allows selecting the important parameters using sensitivity indices is presented. The uncertainty propagation and the importance measure of input parameters are analysed using four different approaches: a f...

Journal: :The Journal of the Australian Mathematical Society. Series B. Applied Mathematics 1996

2006
HUA HE LI-SHAN HUANG

Local linear regression is commonly used in practice because of its excellent numerical and theoretical properties. It involves fitting a straight line segment over a small region whose midpoint is the target point x, and the local linear estimate at x is the estimated intercept of that straight line segment. Local linear estimator has an asymptotic bias of order h and variance of order (nh) wi...

Journal: :Spatial vision 1999
S C Dakin

I consider how structure is derived from texture containing changes in orientation over space, and propose that multi-local orientation variance (the average orientation variance across a series of discrete images locales) is an estimate of the degree of organization that is useful both for spatial scale selection and for discriminating structure from noise. The oriented textures used in this p...

Journal: :Journal of Statistical Mechanics: Theory and Experiment 2017

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