搜索结果: 1-15 共查到“Extrapolation”相关记录30条 . 查询时间(0.364 秒)
We consider the problem of constructing a wave extrapolation operator in a variable and possibly anisotropic medium. Our construction involves Fourier transforms in space combined with the help of a l...
Lowrank finite-differences and lowrank Fourier finite-differences for seismic wave extrapolation in the acoustic approximation
Numerical solutions Body waves Seismic anisotropy Computational seismology Wave propagation Acoustic properties
2015/7/14
We introduce a novel finite-difference (FD) approach for seismic wave extrapolation in time.We derive the coefficients of the finite-difference operator from a lowrank approximation of the space-waven...
Extrapolation Methods for Accelerating PageRank Computations
Extrapolation Methods Accelerating PageRank Computations
2015/6/12
We present a novel algorithm for the fast computation of PageRank, a hyperlink-based estimate of the “importance” of Web pages. The original PageRank algorithm uses the Power Method to compute success...
We present a novel technique for speeding up the computation of PageRank, a hyperlink-based estimate of the “importance” of Web pages, based on the ideas presented in [7]. The original PageRank algori...
基于Extrapolation Tikhonov正则化算法的重力数据三维约束反演
重力数据 3-D反演 Extrapolation Tikhonov正则化方法 深度加权函数 上下限约束
2013/11/4
通过研究重力数据三维反演解的病态性,利用基于拉格朗日插值方法的Extrapolation Tikhonov正则化方法来解决反演中解的不唯一性和不稳定性问题,该方法最大限度的减少了因正则化参数的引入而在反演结果中介入的误差,同时详细讨论了基于三种选择原则的正则化双参数的具体选择方法,模型试算结果表明,与原Tikhonov方法相比,该方法提高了反演的拟合精度.其次,为了消除核函数随深度增加而快速衰减对...
SUPERRESOLUTION SAR IMAGING ALGORITHM BASED ON MVM AND WEIGHTED NORM EXTRAPOLATION
Synthetic Aperture Radar Superresolution Minimum Variance Method Minimum Weighted Norm Extrapolation
2014/4/24
In this paper, we present an extrapolation approach, which uses minimum weighted norm constraint and minimum
variance spectrum estimation, for improving synthetic aperture radar (SAR) resolution. Mi...
TWO-WAY SPATIAL EXTRAPOLATION AND VALIDATION ON ECOLOGICAL PATTERNS OF ELAEOCARPUS JAPONICUS BETWEEN MAIN WATERSHEDS IN HUISUN OF CENTRAL TAIWAN
Forestry GIS Modeling Pattern SPOT Prediction Accuracy Performance
2014/4/30
Spatial extrapolation has become a sine qua non and an ad hoc major research focus in applied ecology in the latter half 20th century. Progressive innovations in data acquisition and processing techno...
SIDE INFORMATION EXTRAPOLATION WITH TEMPORAL AND SPATIAL CONSISTENCY
Distributed video coding side information extrapolation temporal and spatial consistency regularized local linear regression
2013/7/24
In this paper, we present an efficient side information extrapolation scheme with temporal and spatial consistency for lowdelay Wyner-Ziv videocoding. Our method is based on theregularized local...
Abstract: In this paper, we discuss three extrapolation methods for alpha-stable random fields with 1<alpha<=2. We justify them, giving proofs of the existence and uniqueness of the solutions for each...
Analytic Approximations for the Extrapolation of Lattice Data
Analytic Approximations the Extrapolation
2011/1/7
We present analytic approximations of chiral SU(3) amplitudes for the extrapolation of lattice data to the physical masses and the determination of Next-to-Next-to-Leading-Order low-energy constants. ...
A comparison of preprocessing methods for solar force-free magnetic field extrapolation
preprocessing methods solar force-free magnetic field extrapolation
2011/1/13
Extrapolations of solar photospheric vector magnetograms into three-dimensional magnetic fields in the chromosphere and corona are usually done under the assumption that the fields are force-free. The...
Analytic Approximations for the Extrapolation of Lattice Data
Chiral Perturbation Theory Chiral extrapolation Lattice QCD Low-energy constants
2011/1/14
We present analytic approximations of chiral SU(3) amplitudes for the extrapolation of lattice
data to the physical masses and the determination of Next-to-Next-to-Leading-Order low-energy
constants...
Rubio de Francia's extrapolation theory: estimates for the distribution function
Rubio de Francia's extrapolation theory the distribution function
2010/11/15
Let $T$ be an arbitrary operator bounded from $L^{p_0}(w)$ into $L^{p_0, \infty}(w)$ for every weight $w$ in the Muckenhoupt class $A_{p_0}$. It is proved in this article that the distribution functi...
The extrapolation of artificial neural networks for the modelling of rainfall ATitlemdash;runoff relationships
artificial neural networks modelling rainfall ATitlemdash runoff relationships
2009/12/4
The last decade has seen increasing interest in the application of Artificial Neural Networks (ANNs) for the modelling of the relationship between rainfall and streamflow. Since multi-layer, feed-forw...
Spectral representation and extrapolation of stationary random processes on linear spaces
Spectral representation extrapolation of stationary random processes linear spaces
2009/9/21
The paper deals with continuous Banach-space-valued
stationary random processes on linear spaces. From von Waldenfels'
1131 integral representation of positive definite functions on a linear
space ...