Technical note: Evaluation of Artificial 120-kilovolt computed tomography images for radiation therapy applications.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15592
Abstract: PURPOSE The purpose of this work is to evaluate the scaled CT number accuracy of an artificial 120 kV reconstruction technique based on phantom experiments in the context of radiation therapy planning. METHODS An abdomen-shaped… read more here.
Keywords: relative error; radiation therapy; reconstruction; artificial 120 ... See more keywords
Nonparametric relative error regression for spatial random variables
Sign Up to like & getrecommendations! Published in 2017 at "Statistical Papers"
DOI: 10.1007/s00362-015-0735-6
Abstract: Let $$\displaystyle Z_{\mathbf {i}}=\left( X_{\mathbf {i}},\ Y_{\mathbf {i}}\right) _{\mathbf {i}\in \mathbb {N}^{N}\, N \ge 1}$$Zi=Xi,Yii∈NNN≥1, be a $$ \mathbb {R}^d\times \mathbb {R}$$Rd×R-valued measurable strictly stationary spatial process. We consider the problem of estimating the regression… read more here.
Keywords: error regression; relative error; regression; nonparametric relative ... See more keywords
Computing the Expected Markov Reward Rates with Stationarity Detection and Relative Error Control
Sign Up to like & getrecommendations! Published in 2017 at "Methodology and Computing in Applied Probability"
DOI: 10.1007/s11009-016-9490-y
Abstract: By combining in a novel way the randomization method with the stationary detection technique, we develop two new algorithms for the computation of the expected reward rates of finite, irreducible Markov reward models, with control… read more here.
Keywords: detection; reward rates; relative error; error ... See more keywords
An inexact alternating direction method of multipliers with relative error criteria
Sign Up to like & getrecommendations! Published in 2017 at "Optimization Letters"
DOI: 10.1007/s11590-016-1021-9
Abstract: In this paper, we study an inexact version of the alternating direction method of multipliers (ADMM) for solving two-block separable linearly constrained convex optimization problems. Specifically, the two subproblems in the classic ADMM are allowed… read more here.
Keywords: relative error; alternating direction; direction method; error criteria ... See more keywords
A partially inexact ADMM with o(1/n) asymptotic convergence rate, ????(1/n) complexity, and immediate relative error tolerance
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DOI: 10.1080/02331934.2020.1772255
Abstract: In this work, we propose a new partially inexact Alternating Direction Method of Multipliers (ADMM) with relative error tolerance. This method departs from previous semi-inexact variants of the ADMM by allowing the second subproblem to… read more here.
Keywords: asymptotic convergence; error tolerance; relative error; error ... See more keywords
An Upgraded ACA Algorithm in Complex Field and Its Statistical Analysis
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2017.2670607
Abstract: An upgraded adaptive cross approximation (U-ACA) algorithm in complex field is proposed, including detailed discussion about both relative-error estimator and pivoting threshold. Two new relative-error estimators are constructed, and the range of the pivoting threshold… read more here.
Keywords: algorithm complex; relative error; statistical analysis; complex field ... See more keywords
A New Method for Evaluation of the Complex Material Coefficients of Piezoelectric Ceramics in the Radial Vibration Modes
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2021.3092708
Abstract: The determination of complex elastic, piezoelectric, and dielectric coefficients of piezoelectric ceramics is important for precision engineering devices. Here, a novel method for determining the optimal material coefficients is presented. This method minimizes the average… read more here.
Keywords: material coefficients; relative error; method; coefficients piezoelectric ... See more keywords
Reverse model of grating structure parameters based on neural network
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DOI: 10.1117/1.oe.59.2.024106
Abstract: Abstract. In the application of the grating, it is necessary to quickly obtain the measurement results of the structural parameters, and the parameters of the measured grating are usually reversed by means of scatterometry. We… read more here.
Keywords: neural network; relative error; structure parameters; model ... See more keywords
Relative error in out-of-plane measurement due to the object illumination.
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DOI: 10.1364/ao.58.004963
Abstract: In this work the sensitivity vector is analyzed for collimated and divergent oblique illumination for an out-of-plane arrangement. In the case of collimated illumination, the variation of the sensitivity vector components was considered and a… read more here.
Keywords: plane; relative error; measurement; illumination ... See more keywords
Strong convergence of the functional nonparametric relative error regression estimator under right censoring
Sign Up to like & getrecommendations! Published in 2020 at "Mathematica Slovaca"
DOI: 10.1515/ms-2017-0443
Abstract: Abstract In this paper, we investigate the asymptotic properties of a nonparametric estimator of the relative error regression given a functional explanatory variable, in the case of a scalar censored response, we use the mean… read more here.
Keywords: error regression; convergence; estimator; relative error ... See more keywords