Results 71 to 80 of about 2,835 (222)

Information, learning and falsification [PDF]

, 2011
There are (at least) three approaches to quantifying information. The first, algorithmic information or Kolmogorov complexity, takes events as strings and, given a universal Turing machine, quantifies the information content of a string as the length of ...
Balduzzi, D., Balduzzi, David
core  

Adaptive Estimation for Weakly Dependent Functional Times Series

Journal of Time Series Analysis, EarlyView.
ABSTRACT We propose adaptive mean and autocovariance function estimators for stationary functional time series under 𝕃p−m‐approximability assumptions. These estimators are designed to adapt to the regularity of the curves and to accommodate both sparse and dense data designs.
Hassan Maissoro, Valentin Patilea, Myriam Vimond   +2 more
wiley   +1 more source

Empirical‐Process Limit Theory and Filter Approximation Bounds for Score‐Driven Time Series Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This article examines the filtering and approximation‐theoretic properties of score‐driven time series models. Under specific Lipschitz‐type and tail conditions, new results are derived, leading to maximal and deviation inequalities for the filtering approximation error using empirical process theory.
Enzo D'Innocenzo
wiley   +1 more source

Band‐Pass Filtering With High‐Dimensional Time Series. A Synthetic Indicator of the Medium‐to‐Long Run Component of Growth

Journal of Time Series Analysis, EarlyView.
ABSTRACT The paper deals with the construction of a synthetic indicator of economic growth, obtained by projecting a quarterly measure of aggregate economic activity, namely gross domestic product (GDP), into the space spanned by a finite number of smooth principal components, representative of the medium‐to‐long‐run component of economic growth of a ...
Alessandro Giovannelli, Marco Lippi, Tommaso Proietti   +2 more
wiley   +1 more source

Transformation To Normality Based On Empirical Distribution Functions

Recoletos Multidisciplinary Research Journal, 2014
The paper examines an effi cient alternative to the Box-Cox and Yeo-Johnson’s transformation to normality procedures which works under very general conditions.
Mark S. Borres, Efren O. Barabat
doaj   +1 more source

Testing Distributional Granger Causality With Entropic Optimal Transport

Journal of Time Series Analysis, EarlyView.
ABSTRACT We develop a novel nonparametric test for Granger causality in distribution based on entropic optimal transport. Unlike classical mean‐based approaches, the proposed method directly compares the full conditional distributions of a response variable with and without the history of a candidate predictor.
Tao Wang
wiley   +1 more source

Scale-to-scale information flow amplifies turbulent fluctuations

Physical Review Research
In three-dimensional turbulence, information of turbulent fluctuations at large scales is propagated to small scales. Here, we investigate the relation between the information flow and turbulent fluctuations described by a shell model. We first establish
Tomohiro Tanogami, Ryo Araki
doaj   +1 more source

Predicting Home Violence, According to Perceived Social Support and Marital Satisfaction for Infertility Women in Tehran, Iran [PDF]

Journal of Social Behavior and Community Health, 2022
Background: Studies in many regions of the world indicate that women bear the burden of infertility. Infertile couples are expected to be involved in various psychological and social problems.
Behzad Ghorbani, Mehdi Shahnazari, Seyede Sedighe Hosseindoust, Zahra Sehat   +3 more
doaj  

Riesz and Kolmogorov inequality for harmonic quasiregular mappings

, 2023
Let $K\ge 1$ and $p\in(1,2]$. We obtain asymptotically sharp constant $c(K,p)$, when $K\to 1$ in the inequality $$\|\Im f\|_{p}\le c(K,p)\|\Re(f)\|_p$$ where $f\in \mathbf{h}^p$ is a $K-$quasiregular harmonic mapping in the unit disk belonging to the ...
Kalaj, David
core  

Harnack inequality and Liouville-type theorems for Ornstein-Uhlenbeck and Kolmogorov operators [PDF]

, 2020
We prove, with a purely analytic technique, a one-side Liouville theorem for a class of Ornstein-Uhlenbeck operators L0 in RN, as a consequence of a Liouville theorem at “t=−∞” for the corresponding Kolmogorov operators L0−∂t in RN+1.
Lanconelli, Ermanno, Kogoj, Alessia Elisabetta, E. Kogoj, Alessia, Priola, Enrico   +3 more
core   +1 more source