Results 21 to 30 of about 3,433,600 (309)

Efficient Bayesian inference for natural time series using ARFIMA processes [PDF]

open access: yesNonlinear Processes in Geophysics, 2015
Many geophysical quantities, such as atmospheric temperature, water levels in rivers, and wind speeds, have shown evidence of long memory (LM). LM implies that these quantities experience non-trivial temporal memory, which potentially not only enhances ...
T. Graves   +3 more
doaj   +1 more source

Ocean/Atmosphere Time Series Analysis [PDF]

open access: yes, 2022
This package contains all necessary files for the course Ocean/Atmosphere Time Series Analysis, an introduction to data and time series analysis for graduate students in oceanography, atmospheric science, and climate. This material is generally taught
Jonathan M. Lilly
core   +1 more source

A Parametric Factor Model of the Term Structure of Mortality

open access: yesEconometrics, 2019
The prototypical Lee–Carter mortality model is characterized by a single common time factor that loads differently across age groups. In this paper, we propose a parametric factor model for the term structure of mortality where multiple factors are
Niels Haldrup   +1 more
doaj   +1 more source

Measuring the Topological Time Irreversibility of Time Series With the Degree-Vector-Based Visibility Graph Method

open access: yesFrontiers in Physics, 2021
Time irreversibility of a time series, which can be defined as the variance of properties under the time-reversal transformation, is a cardinal property of non-equilibrium systems and is associated with predictability in the study of financial time ...
Ryutaro Mori, Ruiyun Liu, Yu Chen
doaj   +1 more source

Discrete-Valued Time Series

open access: yesEntropy, 2023
Time series are sequentially observed data in which important information about the phenomenon under consideration is contained not only in the individual observations themselves, but also in the way these observations follow one another [...]
Christian H. Weiß
doaj   +1 more source

Mandelbrot's Stochastic Time Series Models

open access: yesEarth and Space Science, 2019
I survey and illustrate the main time series models that Mandelbrot introduced into time series analysis in the 1960s and 1970s. I focus particularly on the members of the additive fractional stable family including Lévy flights and fractional Brownian ...
N. W. Watkins
doaj   +1 more source

Demonstrating the value of larger ensembles in forecasting physical systems

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2016
Ensemble simulation propagates a collection of initial states forward in time in a Monte Carlo fashion. Depending on the fidelity of the model and the properties of the initial ensemble, the goal of ensemble simulation can range from merely quantifying ...
Reason L. Machete, Leonard A. Smith
doaj   +1 more source

findstructureintime/Time-Series-Analysis v0.0.1 [PDF]

open access: yes, 2020
This is the github repository containing the four Matlab code modules with sample examples introduced in the paper, Finding Structure in Time: Visualizing and Analyzing Behavioral Time ...
Tian Linger Xu
core   +1 more source

Explainable Time Series Tree: An Explainable Top-Down Time Series Segmentation Framework

open access: yesIEEE Access, 2023
A wide range of Machine Learning algorithms can model time series to address classification, forecasting, and clustering problems. However, time series may exhibit characteristics that complicate these tasks, such as repeating patterns and seasonal ...
Vitor de Castro Silva   +3 more
doaj   +1 more source

Mixed portmanteau tests for time-series models [PDF]

open access: yes, 2005
This paper obtains the joint limiting distribution of residuals and squared residuals of a general time-series model. Based on this, we propose a mixed portmanteau statistic for testing the adequacy of fitted time-series models.
Wong, H   +3 more
core   +1 more source

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