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A Path Algorithm for Constrained Estimation. [PDF]

open access: yesJ Comput Graph Stat, 2013
Many least squares problems involve affine equality and inequality constraints. Although there are variety of methods for solving such problems, most statisticians find constrained estimation challenging.
Zhou H, Lange K.
europepmc   +6 more sources

Parameter Choice, Stability and Validity for Robust Cluster Weighted Modeling

open access: yesStats, 2021
Statistical inference based on the cluster weighted model often requires some subjective judgment from the modeler. Many features influence the final solution, such as the number of mixture components, the shape of the clusters in the explanatory ...
Andrea Cappozzo   +3 more
doaj   +1 more source

Passive IR-UWB Localization System for UAV-Based Electric Facility Inspection During GPS Outage

open access: yesIEEE Access, 2023
A practical localization system is proposed for an unmanned aerial vehicle (UAV) performing its inspection mission under the global positioning system (GPS) signal blockage.
Ui-Suk Suh   +4 more
doaj   +1 more source

Joint State and Parameter Estimation for Hypersonic Glide Vehicles Based on Moving Horizon Estimation via Carleman Linearization

open access: yesAerospace, 2022
Aimed at joint state and parameter estimation problems in hypersonic glide vehicle defense, a novel moving horizon estimation algorithm via Carleman linearization is developed in this paper.
Yudong Hu, Changsheng Gao, Wuxing Jing
doaj   +1 more source

Improving leaf chlorophyll content estimation through constrained PROSAIL model from airborne hyperspectral and LiDAR data

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Leaf chlorophyll plays an important role in forest management and ecosystem balance. Hyperspectral images have been widely applied in leaf chlorophyll content (LCC) estimation.
Lu Xu   +7 more
doaj   +1 more source

Kalman Filtering With Linear State Equality Constraints: A Method Based on Separating Variables

open access: yesIEEE Access, 2022
This article considers the minimum variance state estimation of linear dynamic systems with linear state equality constraints. The proposed method uses singular value decomposition to divide the constrained system states into deterministic and stochastic
Habib Ghanbarpourasl, Serkan Zobar
doaj   +1 more source

High-Dimensional Covariance Estimation via Constrained Lq-Type Regularization

open access: yesMathematics, 2023
High-dimensional covariance matrix estimation is one of the fundamental and important problems in multivariate analysis and has a wide range of applications in many fields.
Xin Wang   +3 more
doaj   +1 more source

Constrained Parameter Estimation for a Mechanistic Kinetic Model of Cobalt–Hydrogen Electrochemical Competition during a Cobalt Removal Process

open access: yesEntropy, 2021
A mechanistic kinetic model of cobalt–hydrogen electrochemical competition for the cobalt removal process in zinc hydrometallurgical was proposed. In addition, to overcome the parameter estimation difficulties arising from the model nonlinearities and ...
Yiting Liang, Yuanhua Zhang, Yonggang Li
doaj   +1 more source

Constrained Least-Squares Parameter Estimation for a Double Layer Capacitor

open access: yesEnergies, 2023
This paper presents an estimation of the parameters for a Double Layer Super Capacitor (DLC) that is modelled with a two-branch circuit. The estimation is achieved using a constrained minimization technique, which is developed off-line and uses a single ...
Nayzel I. Jannif   +4 more
doaj   +1 more source

Simultaneous estimation of land surface scheme states and parameters using the ensemble Kalman filter: identical twin experiments [PDF]

open access: yesHydrology and Earth System Sciences, 2011
The performance of the ensemble Kalman filter (EnKF) in soil moisture assimilation applications is investigated in the context of simultaneous state-parameter estimation in the presence of uncertainties from model parameters, soil moisture initial ...
S. Nie, J. Zhu, Y. Luo
doaj   +1 more source

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