Results 41 to 50 of about 242 (53)
Given a non-uniform criss-cross partition of a rectangular domain $\Omega$, we analyse the error between a function $f$ defined on $\Omega$ and two types of $C^1$-quadratic spline quasi-interpolants (QIs) obtained as linear combinations of B-splines with
Dagnino, Catterina, Sablonnière, Paul
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On nonlinear weighted least squares fitting of the three-parameter inverse Weibull distribution [PDF]
In this paper we consider nonlinear least squares fitting of the three-parameter inverse Weibull distribution to the given data $(w_i,t_i,y_i)$, $i=1,ldots,n$, $ngeq 3$. As the main result, we show that the least squares estimate exists provided that the
Darija Marković, Dragan Jukić
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Least squares fitting of spheres and ellipsoids using not orthogonal distances [PDF]
Berman [1] examined the problem of estimating the parameters of a circle when angular differences between successively measured data points were also measured. Applications were reported. Späth [4] generalized that problem by considering an ellipse.
H. Späth
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Analysis of solution of the least squares problem [PDF]
For the given data $(p_i,t_i,f_i),$ $i=1,ldots,m$, we consider the existence problem of the best parameter approximation of the exponential model function in the sense of ordinary least squares and total least squares.
D. Jukić, R. Scitovski
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Optimal designs for free knot least squares splines [PDF]
In this paper D-optimal designs for free knot least squares spline estimation are investigated. In contrast to most of the literature on optimal design for spline regression models it is assumed that the knots of the spline are also estimated from the ...
Dette, Holger +2 more
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Engineering images designed by fractal subdivision scheme. [PDF]
Mustafa G, Bari M, Jamil S.
europepmc +1 more source
Continuity conditions for Q-Bézier curves of degree n. [PDF]
Hu G, Bo C, Qin X.
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G2 continuity conditions for generalized Bézier-like surfaces with multiple shape parameters. [PDF]
Hu G, Cao H, Wang X, Qin X.
europepmc +1 more source
Optimal designs for smoothing splines [PDF]
In the common nonparametric regression model we consider the problem of constructing optimal designs, if the unknown curve is estimated by a smoothing spline.
Dette, Holger +2 more
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