Results 11 to 20 of about 39,346 (217)

EVALUATING THE IMPACT OF DATA.GOV.RO ON THE ACADEMIC RESEARCH [PDF]

open access: yesAnalele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2022
In the context of the digital revolution, data is the most valuable resource which gains in value the more it is used. Freely available open source data and institutional data repositories encourage and connect, both academia and industry.
MIRICĂ ANDREEA, PETCU IONELA-ROXANA
doaj  

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

Language time series analysis [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2006
21 pages, 5 figures, accepted in Physica ...
Kosmidis, Kosmas   +2 more
openaire   +2 more sources

Singular Spectrum Analysis of Tremorograms for Human Neuromotor Reaction Estimation

open access: yesMathematics, 2022
Singular spectrum analysis (SSA) is a method of time series analysis and is used in various fields, including medicine. A tremorogram is a biological signal that allows evaluation of a person’s neuromotor reactions in order to infer the state of the ...
Olga Bureneva   +2 more
doaj   +1 more source

Hybrid Time Series Method for Long-Time Temperature Series Analysis

open access: yesDiscrete Dynamics in Nature and Society, 2021
This paper combines discrete wavelet transform (DWT), autoregressive moving average (ARMA), and XGBoost algorithm to propose a weighted hybrid algorithm named DWTs-ARMA-XGBoost (DAX) on long-time temperature series analysis.
Guangdong Huang, Jiahong Li
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

Assessing pricing assumptions for weather index insurance in a changing climate

open access: yesClimate Risk Management, 2014
Weather index insurance is being offered to low-income farmers in developing countries as an alternative to traditional multi-peril crop insurance. There is widespread support for index insurance as a means of climate change adaptation but whether or not
J.D. Daron, D.A. Stainforth
doaj   +1 more source

Escape from model-land

open access: yesEconomics: Journal Articles, 2019
Both mathematical modelling and simulation methods in general have contributed greatly to understanding, insight and forecasting in many fields including macroeconomics.
Thompson Erica L., Smith Leonard A.
doaj   +1 more source

Polynomial Regressions and Nonsense Inference

open access: yesEconometrics, 2013
Polynomial specifications are widely used, not only in applied economics, but also in epidemiology, physics, political analysis and psychology, just to mention a few examples.
Daniel Ventosa-Santaulària   +1 more
doaj   +1 more source

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