Results 21 to 30 of about 5,324 (208)

A novel distribution system state estimator based on robust cubature particle filter used for non‐gaussian noise and bad data scenarios

IET Generation, Transmission & Distribution, 2022
State estimation is the core function of distribution management system, and its estimation accuracy directly affects the operation of other advanced application functions of distribution management system.
Qian Shi, Min Liu, Luqing Hang
doaj   +1 more source

Monte Carlo cubature construction [PDF]

Japan Journal of Industrial and Applied Mathematics, 2020
AbstractIn numerical integration, cubature methods are effective, especially when the integrands can be well-approximated by known test functions, such as polynomials. However, the construction of cubature formulas has not generally been known, and existing examples only represent the particular domains of integrands, such as hypercubes and spheres. In
openaire   +2 more sources

Representations of Multi-Attribute Grain Quality

Journal of Agricultural and Resource Economics, 2001
Grain quality is typically measured via several attributes. As these attributes vary across shipments and time, grain quality can be described using multivariate probability or frequency distributions.
Eric A. DeVuyst, D. Demcey Johnson, William E. Nganje   +2 more
doaj   +1 more source

Efficient cubature rules [PDF]

ETNA - Electronic Transactions on Numerical Analysis, 2019
73 new cubature rules are found for three standard multidimensional integrals with spherically symmetric regions and weights, using direct search with a numerical zero-finder. All but four of the new rules have fewer integration points than known rules of the same degree, and twenty are within three points of M{ö}ller's lower bound.
openaire   +2 more sources

Adaptive triangular cubature

Rocky Mountain Journal of Mathematics, 1984
This paper contains adaptive cubature rules for bivariate problems over a general polygonal domain D. The domain D is approximated by general triangles. Some numerical examples illustrating the algorithm are given.
Barnhill, R.E., Little, F.F.
openaire   +3 more sources

An Adaptive Filter for Nonlinear Multi-Sensor Systems with Heavy-Tailed Noise

Sensors, 2020
Aiming towards state estimation and information fusion for nonlinear systems with heavy-tailed measurement noise, a variational Bayesian Student’s t-based cubature information filter (VBST-CIF) is designed.
Xiangxiang Dong, Luigi Chisci, Yunze Cai
doaj   +1 more source

Vehicle State and Road Adhesion Coefficient Joint Estimation Based on High-Order Cubature Kalman Algorithm

Applied Sciences, 2023
With regard to the rear-drive in-wheel motor vehicle, this paper studies the joint estimation method for the vehicle state and road adhesion coefficient.
Lingxiao Quan, Ronglei Chang, Changhong Guo   +2 more
semanticscholar   +1 more source

A New Sparse Gauss-Hermite Cubature Rule Based on Relative-Weight-Ratios for Bearing-Ranging Target Tracking

Modelling and Simulation in Engineering, 2017
A new sparse Gauss-Hermite cubature rule is designed to avoid dimension explosion caused by the traditional full tensor-product based Gauss-Hermite cubature rule.
Lijun Peng, Xiaojun Duan, Jubo Zhu
doaj   +1 more source

Efficient importance analysis methods for structures with distribution parameter uncertainty based on cubature formula

Xibei Gongye Daxue Xuebao, 2022
The importance analysis of a structural system with distribution parameter uncertainty can identify key parameters that significantly affect its output performance, thus providing importance guidance for its design and optimization.
LIU Junchao, LI Luyi
doaj   +1 more source

Evaluating a double integral using Euler's method and Richardson extrapolation

Lietuvos Matematikos Rinkinys
We transform a double integral into a second-order initial value problem, which we solve using Euler's method and Richardson extrapolation. For an example we consider, we achieve accuracy close to machine precision (~10-13).
Justin Steven Calder Prentice
doaj   +3 more sources