نتایج جستجو برای: moment

تعداد نتایج: 60291  

Journal: :Computational Statistics & Data Analysis 2003
Elsayed A. H. Elamir Allan H. Seheult

Classical estimation methods (least squares, the method of moments and maximum likelihood) work well in regular cases such as the exponential family, but outliers can have undue in1uence on these methods. We de3ne population trimmed L-moments (TL-moments) and corresponding sample TL-moments as robust generalisations of population and sample L-moments. TL-moments assign zero weight to extreme ob...

Journal: :Pattern Recognition Letters 1994
Jan Flusser Tomás Suk

AAne moment invariants (AMIs) have been derived recently by Flusser and Suk (1992). In this paper, the AMIs are used as the features for recognition of handwritten characters independent on their size, slant and other variations. A comparison with classical moment invariants is also given.

Journal: :desert 0
a.r. keshtkar assistant professor, international desert research center (idrc), university of tehran, tehran, iran a. salajegheh associate professor, faculty of natural resources, university of tehran, karaj, iran m. najafi hajivar msc. graduate, natural resources and watershed management office, koohrang, iran

statistical frequency analysis is the most common procedure for the analysis of flood data at a gauged location thatin first step it is needed to select a model to represent the population. among them, the central moment has been themost common and widely used, and with the using of computers, the application of the maximum likelihood hasincreased. this research was carried out in order to reco...

2014
Diana Bílková

Application of the method of moments for the parametric distribution is common in the construction of a suitable parametric distribution. However, moment method of parameter estimation does not produce good results. An alternative approach when constructing an appropriate parametric distribution for the considered data file is to use the so-called order statistics. This paper deals with the use...

2009
Michael Schlemmer Ingrid Hotz Bernd Hamann Hans Hagen

The analysis of time-dependent data is often guided by the question of how dominant structures develop over time. It is important to understand how patterns or structures identified for one time step evolve over time, by changing or moving in the domain. To gain insight into such evolving structural change it is crucial to effectively compare different time steps. This paper proposes a comparis...

2010
SABINE BURGDORF IGOR KLEP

We present tracial analogs of the classical results of Curto and Fialkow on moment matrices. A sequence of real numbers indexed by words in non-commuting variables with values invariant under cyclic permutations of the indexes, is called a tracial sequence. We prove that such a sequence can be represented with tracial moments of matrices if its corresponding moment matrix is positive semidefini...

1999
Jan Stochel JAN STOCHEL

It is shown that the truncated multidimensional moment problem is more general than the full multidimensional moment problem.

ژورنال: ارگونومی 2020

Background and Aim: Carriage of backpack sprayers is an inevitable part of agricultural operations that increases the risk of injury along with undesirable changes in walking mechanics. The purpose of this study is to formulate the muscle moment changes in the hip, knee and ankle for the backpack sprayer operator body. Methods: In this study, a seven-link sprayer operator model is designed and...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید