Results 21 to 30 of about 451,504 (196)

Multivariate Sea Surface Prediction in the Bohai Sea Using a Data-Driven Model

open access: yesJournal of Marine Science and Engineering, 2023
Data-driven predictions of marine environmental variables are typically focused on single variables. However, in real marine environments, there are correlations among different oceanic variables.
Song Hu   +6 more
doaj   +1 more source

Role of Management Earnings Forecast Error in Stock Market Efficiency with Emphasis on Earnings and Operation Earnings Components [PDF]

open access: yesمجله دانش حسابداری, 2020
Objective: The purpose of this research was to investigate the role of management earnings forecast errors in stock market efficiency with emphasis on operation earnings and their components in the Tehran Stock Exchange from 2009 to 2017.
Shamsi Vahedi, Saeed Ali ahmadi (Ph.D)
doaj   +1 more source

B-spline estimation in varying coefficient models with correlated errors

open access: yesAIMS Mathematics, 2022
The varying coefficient model assumes that the regression function depends linearly on some regressors, and that the regression coefficients are smooth functions of other predictor variables.
Yanping Liu, Juliang Yin
doaj   +1 more source

Prediction in polynomial errors-in-variables models

open access: yesModern Stochastics: Theory and Applications, 2020
A multivariate errors-in-variables (EIV) model with an intercept term, and a polynomial EIV model are considered. Focus is made on a structural homoskedastic case, where vectors of covariates are i.i.d. and measurement errors are i.i.d. as well.
Alexander Kukush, Ivan Senko
doaj   +1 more source

K-Nearest Neighbor Method with Principal Component Analysis for Functional Nonparametric Regression

open access: yesمجلة بغداد للعلوم, 2022
This paper proposed a new  method to study functional non-parametric regression data analysis with conditional expectation in the case that the covariates  are functional and the Principal Component Analysis was utilized to de-correlate the multivariate
Shelan Saied Ismaeel   +2 more
doaj   +1 more source

Assimilating GlobColour ocean colour data into a pre-operational physical-biogeochemical model [PDF]

open access: yesOcean Science, 2012
As part of the GlobColour project, daily chlorophyll <i>a</i> observations, derived using remotely sensed ocean colour data from the MERIS, MODIS and SeaWiFS sensors, are produced.
D. A. Ford   +5 more
doaj   +1 more source

Identifying Demographic, Clinical, Muscular and Histological Factors Associated with Ultrasound Cervical Multifidus Measurement Errors in a Chronic Neck Pain Population

open access: yesSensors, 2022
Ultrasound imaging (US) is a widely used imaging tool in physiotherapy for assessing muscle morphology and quality, among other purposes, such as ensuring the patients’ safety during invasive procedures or providing visual feedback during motor control ...
Juan Antonio Valera-Calero   +4 more
doaj   +1 more source

Generalized background error covariance matrix model (GEN_BE v2.0) [PDF]

open access: yesGeoscientific Model Development, 2015
The specification of state background error statistics is a key component of data assimilation since it affects the impact observations will have on the analysis.
G. Descombes   +4 more
doaj   +1 more source

Consistency of the total least squares estimator in the linear errors-in-variables regression

open access: yesModern Stochastics: Theory and Applications, 2018
This paper deals with a homoskedastic errors-in-variables linear regression model and properties of the total least squares (TLS) estimator. We partly revise the consistency results for the TLS estimator previously obtained by the author [18]. We present
Sergiy Shklyar
doaj   +1 more source

Forecasting Internal Migration in Russia Using Google Trends: Evidence from Moscow and Saint Petersburg

open access: yesForecasting, 2021
This paper examines the suitability of Google Trends data for the modeling and forecasting of interregional migration in Russia. Monthly migration data, search volume data, and macro variables are used with a set of univariate and multivariate models to ...
Dean Fantazzini   +3 more
doaj   +1 more source

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