Results 1 to 10 of about 3,920 (167)

Equation-of-Motion Coupled-Cluster Cumulant Green’s Function for Excited States and X-Ray Spectra

Frontiers in Chemistry, 2021
Green’s function methods provide a robust, general framework within many-body theory for treating electron correlation in both excited states and x-ray spectra.
Karol Kowalski, Bo Peng, John Rehr
exaly   +3 more sources

Cumulants, free cumulants and half-shuffles [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
Free cumulants were introduced as the proper analogue of classical cumulants in the theory of free probability. There is a mix of similarities and differences, when one considers the two families of cumulants. Whereas the combinatorics of classical cumulants is well expressed in terms of set partitions, that of free cumulants is described and often ...
Ebrahimi-Fard, Kurusch, Patras, Frédéric   +1 more
openaire   +4 more sources

Investigation of temperature and pressure effects on thermodynamic parameters of intermetallic alloy in EXAFS

Cogent Engineering, 2020
This work advances the anharmonic correlated Einstein model to investigate how pressure and temperature affect the Debye–Waller factor and thermodynamic parameters of an intermetallic alloy. By using the anharmonic correlated Einstein model in extended X-
Nguyen Ba Duc
doaj   +1 more source

Cumulant GAN

IEEE Transactions on Neural Networks and Learning Systems, 2023
37 pages, 27 ...
Yannis Pantazis, Dipjyoti Paul, Michail Fasoulakis, Yannis Stylianou, Markos A. Katsoulakis   +4 more
openaire   +3 more sources

Asymptotic Expansion for the Distribution and Density Functions of the Quadratic Form of a Stationary Gaussian Process in the Large Deviation Cramer Zone

Nonlinear Analysis, 2001
The work considers the asymptomic expansions in the large deviation Cramer zone for the distribution and its density functions of the quadratic form a stationary Gaussian sequence.
L. Saulis
doaj   +1 more source

Effective Feature Selection Method for Deep Learning-Based Automatic Modulation Classification Scheme Using Higher-Order Statistics

Applied Sciences, 2020
Recently, in order to satisfy the requirements of commercial communication systems and military communication systems, automatic modulation classification (AMC) schemes have been considered. As a result, various artificial intelligence algorithms such as
Sang Hoon Lee, Kwang-Yul Kim, Yoan Shin
doaj   +1 more source

Highly Accurate Two-Dimensional Direction Finding Using Cumulant

IEEE Access, 2018
This paper proposes a new two-dimensional direction finding algorithm for estimating multiple non-Gaussian signals using cumulants. This new algorithm: 1) employs an array geometry consisting of a nine-element non-uniformly spaced cross-shaped sub-array ...
Chen Gu, Hong Hong, Xiaohua Zhu, Jin He
doaj   +1 more source

On the Combinatorics of Cumulants

Journal of Combinatorial Theory, Series A, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gian-Carlo Rota, Jianhong Shen
openaire   +1 more source

Mixed-Field Source Localization Based on the Non-Hermitian Matrix

Information, 2020
In this paper, an efficient high-order multiple signal classification (MUSIC)-like method is proposed for mixed-field source localization. Firstly, a non-Hermitian matrix is designed based on a high-order cumulant.
Minggang Mo, Zhaowei Sun
doaj   +1 more source

Parameter Estimation of Non-Gaussian Signals for Polarization-Sensitive Augmented Coprime Array: Fourth-Order Cumulant Reduced-Dimensional Capon Algorithm

International Journal of Antennas and Propagation, 2022
In this paper, we investigate the problem of direction of arrival (DOA) and polarization estimation for non-Gaussian signal in polarization-sensitive augmented coprime array.
Meng Yang, Haowei Zeng, Xiaofei Zhang
doaj   +1 more source