7 papers
A stochastic approach to handle knapsack problems in the creation of ensembles
Andras Hajdu, Gyorgy Terdik, Attila Tiba +1
Ensemble-based methods are highly popular approaches that increase the accuracy of a decision by aggregating the opinions of individual voters. The common point is to maximize accu…
Optimizing Majority Voting Based Systems Under a Resource Constraint for Multiclass Problems
Attila Tiba, Andras Hajdu, Gyorgy Terdik +1
Ensemble-based approaches are very effective in various fields in raising the accuracy of its individual members, when some voting rule is applied for aggregating the individual de…
Harmonic analysis and distribution-free inference for spherical distributions
S. Rao Jammalamadaka, Gyorgy Terdik
Fourier analysis and representation of circular distributions in terms of their Fourier coefficients, is quite commonly discussed and used for model-free inference such as testing…
Change-point analysis in frequency domain for chronological data
Gyorgy H. Terdik, Stergios B. Fotopoulos, Venkata K. Jandhyala
The purpose of this study is to provide a new methodology of how one can consistently estimate a change-point in time series data. In contrast with previous studies, the suggested…
When the bispectrum is real-valued
E. Iglói, Gy. Terdik
Let {X(t)} be a stationary time series with a.e. positive spectrum. Two consequences of that the bispectrum of {X(t)} is real-valued but nonzero: 1) if {X(t)} is also linear, then…
Trispectrum and higher order spectra for non-Gaussian homogenous and isotropic field on the 2D-plane
György Terdik
In this paper we study the non-Gaussian homogenous and isotropic field on the plane in frequency domain. The trispectrum and higher order spectra of such a field are described in t…
Angular Spectra for non-Gaussian Isotropic Fields
Gyorgy Terdik
Cosmic Microwave Background (CMB) Anisotropies is a subject of intensive research in several fields of sciences. In this paper we start a systematic development of basic notions an…