Results 121 to 130 of about 1,047,164 (269)

Modeling and Forecasting the CBOE VIX With the TVP‐HAR Model

open access: yesJournal of Forecasting, EarlyView.
ABSTRACT This study proposes the use of a heterogeneous autoregressive model with time‐varying parameters (TVP‐HAR) to model and forecast the Chicago Board Options Exchange (CBOE) volatility index (VIX). To demonstrate the superiority of the TVP‐HAR model, we consider six variations of the model with different bandwidths and smoothing variables and ...
Wen Xu   +2 more
wiley   +1 more source

The potential moderating role of living in a conflict area on the link between classroom psychosocial stressors, perceived stress and change in anxiety symptoms in Israeli school children

open access: yesJCPP Advances, Volume 2, Issue 4, December 2022., 2022
Our study suggests that threat of war‐conflict plays a significant role in the relationship between perceived stress and anxiety symptoms and serves as an environmental risk factor for children's development of anxiety problems. Abstract Background Perceived stress associated with relational victimization from peers and conflictual relations with the ...
Pia Behnsen   +6 more
wiley   +1 more source

Investigating Statistical Features of the FX Bid Ask Series in a Small Economy with a Sizeable Informal Economy

open access: yesJournal of Human, Earth, and Future
The assessment of the effect of the informal use of a foreign currency on the corresponding FX rates toward the national currency is a very difficult task, requiring direct calculation and modeling.
Elmira Kushta   +3 more
doaj   +1 more source

Hierarchical Regularizers for Reverse Unrestricted Mixed Data Sampling Regressions

open access: yesJournal of Forecasting, EarlyView.
Abstract Reverse Unrestricted MIxed DAta Sampling (RU‐MIDAS) regressions are used to model high‐frequency responses by means of low‐frequency variables. However, due to the periodic structure of RU‐MIDAS regressions, the dimensionality grows quickly if the frequency mismatch between the high‐ and low‐frequency variables is large.
Alain Hecq, Marie Ternes, Ines Wilms
wiley   +1 more source

Enhancing the Classification Accuracy of EEG-Informed Inner Speech Decoder Using Multi-Wavelet Feature and Support Vector Machine

open access: yesIEEE Access
Speech involves the synchronization of the brain and the oral articulators. Inner speech, also known as imagined speech or covert speech, refers to thinking in the form of sound without intentional movement of the lips, tongue, or hands.
Mokhles M. Abdulghani   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy