نتایج جستجو برای: curve fitting or iterative inversion procedures (fraser

تعداد نتایج: 3859799  

Journal: :فیزیک زمین و فضا 0
اکو علیپور دانشجوی کارشناسی ارشد ژئومغناطیس-دانشگاه شاهرود علی نجاتی کلاته هیت علمی دانشگاه شاهرود، دانشکده معدن، نفت و ژئوفیزیک علیرضا عرب امیری هیت علمی دانشگاه شاهرود، دانشکده معدن، نفت و ژئوفیزیک

generally, the measured secondary field data is inverted into resistivity using two principal models; the homogeneous half-space model and the layered half-space model. while the homogeneous half-space inversion uses single frequency data, the inversion is done individually for each of the frequencies used, the multi-layer 1d inversion is able to take the data of all frequencies available into ...

2015

This supplement consists of several parts that refer directly to specific topics in the paper: A Proof of Equation (2) B Proof of Lemma 3.1 (Symmetric biproportional fit) C Technical details on why ”local affinity” is sufficient in Section 4.1 D Proof of Theorem 4.2 (Convergence of PSIPF) E Proof of Lemma 4.4 (L1-monotony) F Proof of Lemma 4.5 (Volume bounds) G Proof of Lemma 4.6 (Limit points)...

1999
Paul Norman

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2003
Jirina Vejnarová

We design an iterative proportional fitting procedure (parameterized by a continuous t-norm) for computation of multidimensional possibility distributions from its marginals, and discuss its basic properties.

Journal: :Rel. Eng. & Sys. Safety 2006
Roger M. Cooke Maarten Nauta Arie H. Havelaar Ine van der Fels

We discuss an application of probabilistic inversion techniques to a model of campylobacter transmission in chicken processing lines. Such techniques are indicated when we wish to quantify a model which is new and perhaps unfamiliar to the expert community. In this case there are no measurements for estimating model parameters, and experts are typically unable to give a considered judgment. In ...

1993
Gabriel Taubin

Recent years have seen an increasing interest in algebraic curves and surfaces of high degree as geometric models or shape descriptors for model-based computer vision tasks such as object recognition and position estimation. Although their invariant-theoretic properties them a natural choice for these tasks, fitting algebraic curves and surfaces to data sets is difficult, and fitting algorithms...

2015
Lin Hongwei

Geometric iterative method, also called progressive-iterative approximation (PIA), is an iterative method with clear geometric meaning. Just by adjusting the control points of curves or surfaces iteratively, the limit curve or surface will interpolate (approximate) the given data point set. In this paper, we introduce the geometric iterative method in two aspects, i.e., theory and application. ...

2013
D. Chaudhuri N. K. Kushwaha

Polygonal approximation is a very useful and common representation of digital curves. This application depends on a parameter, which is the threshold value. Various simple piecewise linear curve fitting procedures called the iterative endpoint fit algorithm are available in the literature. The choice of threshold value for convergence of this type of algorithm is a critical point. In this pape...

2016
Václav Kratochvíl Jirina Vejnarová

Iterative Proportional Fitting Procedure is commonly used in probability theory for construction of a joint probability distribution from a system of its marginals. A similar idea can be used in case of belief functions thanks to special operators of composition defined in this framework. In this paper, a formerly designed IPF procedure is further studied. We propose a modification of compositi...

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