Results 21 to 30 of about 96,492 (80)

Variable-to-Fixed Length Homophonic Coding Suitable for Asymmetric Channel Coding

open access: yes, 2017
In communication through asymmetric channels the capacity-achieving input distribution is not uniform in general. Homophonic coding is a framework to invertibly convert a (usually uniform) message into a sequence with some target distribution, and is a ...
Honda, Junya, Yamamoto, Hirosuke
core   +1 more source

Nonlinear error correction, asymmetric adjusment and cointegration [PDF]

open access: yes, 1991
This paper has three main components. First, it outlines a model of nonlinear error correction (NEC) in which the linear error correction term a'Xt (the vector time series Xt is cointegrated, a is the cointegrating vector) is replaced by the nonlinear ...
Escribano, Álvaro, Pfann, Gerard
core   +1 more source

Field-theory for reaction-diffusion processes with hard-core particles

open access: yes, 2000
We show how to build up a systematic bosonic field-theory for a general reaction-diffusion process involving hard-core particles in arbitrary dimension. We criticize a recent approach proposed by Park, Kim and Park (Phys. Rev. E 62 (2000)).
van Wijland, F.
core   +2 more sources

Limits on anisotropic inflation from the Planck data

open access: yes, 2013
Temperature anisotropy of the cosmic microwave background offers a test of the fundamental symmetry of spacetime during cosmic inflation. Violation of rotational symmetry yields a distinct signature in the power spectrum of primordial fluctuations as $P({
Kim, Jaiseung, Komatsu, Eiichiro
core   +1 more source

Construction of Capacity-Achieving Lattice Codes: Polar Lattices

open access: yes, 2018
In this paper, we propose a new class of lattices constructed from polar codes, namely polar lattices, to achieve the capacity $\frac{1}{2}\log(1+\SNR)$ of the additive white Gaussian-noise (AWGN) channel. Our construction follows the multilevel approach
Ling, Cong   +3 more
core   +1 more source

Asymmetric and non linear adjustment in the revenue expenditure models [PDF]

open access: yes, 2002
The purpose of this paper is to empirically analyse the revenue-expenditure models of public finance by considering the possibility of non-linear and asymmetric adjustment.
Legrenzi, G, Milas, C
core   +1 more source

Statistical and Economic Evaluation of Time Series Models for Forecasting Arrivals at Call Centers

open access: yes, 2018
Call centers' managers are interested in obtaining accurate point and distributional forecasts of call arrivals in order to achieve an optimal balance between service quality and operating costs.
Bastianin, Andrea   +2 more
core   +1 more source

Relaxation time of anisotropic simple exclusion processes and quantum Heisenberg models

open access: yes, 2002
Motivated by an exact mapping between anisotropic half integer spin quantum Heisenberg models and asymmetric diffusions on the lattice, we consider an anisotropic simple exclusion process with $N$ particles in a rectangle of $\bbZ^2$.
Caputo, Pietro, Martinelli, Fabio
core   +2 more sources

Adaptively correcting quantum errors with entanglement

open access: yes, 2011
Contrary to the assumption that most quantum error-correcting codes (QECC) make, it is expected that phase errors are much more likely than bit errors in physical devices. By employing the entanglement-assisted stabilizer formalism, we develop a new kind
Fujiwara, Yuichiro, Hsieh, Min-Hsiu
core   +1 more source

Asymmetry Helps: Eigenvalue and Eigenvector Analyses of Asymmetrically Perturbed Low-Rank Matrices

open access: yes, 2020
This paper is concerned with the interplay between statistical asymmetry and spectral methods. Suppose we are interested in estimating a rank-1 and symmetric matrix $\mathbf{M}^{\star}\in \mathbb{R}^{n\times n}$, yet only a randomly perturbed version ...
Chen, Yuxin, Cheng, Chen, Fan, Jianqing
core  

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