Results 81 to 90 of about 318 (139)

An Improved Cumulant Based Method for Independent Component Analysis [PDF]

open access: yes, 2002
An improved method for independent component analysis based on the diagonalization of cumulant tensors is proposed. It is based on Comon's algorithm [1] but it takes third- and fourth-order cumulant tensors into account simultaneously. The underlying contrast function is also mathematically much simpler and has a more intuitive interpretation.
Tobias Blaschke, Laurenz Wiskott
openaire   +1 more source

A remark on the sign change of the four-particle azimuthal cumulant in small systems

open access: yesPhysics Letters B, 2018
The azimuthal cumulants, c2{2} and c2{4}, originating from the global conservation of transverse momentum in the presence of hydro-like elliptic flow are calculated. We observe the sign change of c2{4} for small number of produced particles. This is in a
Adam Bzdak, Guo-Liang Ma
doaj   +1 more source

Quarkonia collectivity in large collision systems with ALICE [PDF]

open access: yesEPJ Web of Conferences
Quarkonium production is one of the golden probes to study the quark-gluon plasma (QGP). Among many observables, the measurement of azimuthal anisotropies in quarkonium production sheds light on the collective behavior of heavy-flavor particles in a ...
Zhang Chi
doaj   +1 more source

The Cumulant Method

open access: yes, 2003
In dieser Arbeit wird eine neue Methode zur Reduktion der Boltzmann-Gleichung auf ein System partieller Differentialgleichungen diskutiert. Nach einer kurzen Einführung in die kinetische Theorie einer Mischung inerter Gase wird ein Überblick in die aus der Literatur bekannten Momentenmethoden gegeben.
openaire   +1 more source

Mode identification of low‐frequency oscillations in power systems based on fourth‐order mixed mean cumulant and improved TLS‐ESPRIT algorithm

open access: yesIET Generation, Transmission & Distribution, 2017
Wide area monitoring systems (WAMS) provide effective support for online identification of low‐frequency oscillations in power systems. The WAMS signal is sensitive to the surrounding environment, and it contains Gaussian white noise.
Tao Jin, Siyi Liu, Rodolfo C.C. Flesch
doaj   +1 more source

Underdetermined blind source separation based on third‐order cumulant and tensor compression

open access: yesIET Radar, Sonar & Navigation
A method for Underdetermined Blind Source Separation is proposed using third‐order cumulants and tensor compression. To effectively suppress symmetrical distributed noise, the third‐order cumulant is considered.
Weilin Luo   +5 more
doaj   +1 more source

A CONVENIENT METHOD FOR PHYSICAL STORAGE OF CUMULATIVE RECORDS [PDF]

open access: yesJournal of the Experimental Analysis of Behavior, 1971
G S, Emley   +3 more
openaire   +2 more sources

High-order cumulant-based weak signal detection method for Drones based on channel state variations.

open access: yesDianxin kexue
Aiming at the challenge of detecting low-altitude, slow-moving, and small unmanned aerial vehicles in complex urban environments, this study proposes a passive detection method based on higher-order statistical features of channel impulse responses.
Xiao Ninggui   +4 more
doaj  

An Efficient Cumulative Edge-Detection Method for Image Reconstruction

open access: yesCoRR
When reconstructing images from noisy measurements, such as in medical scans or scientific imaging, we face an inverse problem: recovering an unknown image from indirect, corrupted observations. These problems are typically ill-posed, meaning small amounts of noise can lead to inaccurate reconstructions.
Toluwani Okunola   +2 more
openaire   +2 more sources

Symmetry-based efficient simulation of higher-order coherences in quantum many-body superradiance

open access: yesPhysical Review Research
We propose an efficient method to numerically simulate the superradiant emission dynamics of large numbers of quantum emitters in ordered arrays in the presence of long-range dipole-dipole interactions mediated by the vacuum electromagnetic field.
Raphael Holzinger   +3 more
doaj   +1 more source

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