init_params_full_G

Initial Parameters for 2D Pseudo-Loglikelihood-Generalized Estimation

datasets

Provides functions to model and forecast crop yields using a spatial temporal conditional copula approach.
The package incorporates extreme weather covariates and Bayesian Structural Time Series models to analyze crop
yield dependencies across multiple regions. Includes tools for fitting, simulating, and visualizing results.
This method build upon established R packages, including 'Hofert' 'et' 'al'. (2025) <doi:10.32614/CRAN.package.copula>,
'Scott' (2024) <doi:10.32614/CRAN.package.bsts>, and 'Stephenson' 'et' 'al'. (2024) <doi:10.32614/CRAN.package.evd>.

Yongkun Li

STCCGEV

Conditional Copula Model for Crop Yield Forecasting

Marie Michaelides

Mélina Mailhot

init_params_full_G function

A numeric vector of length \((2+M+4*D*M)\), structured as follows:<dl>
<dt>omega</dt>
<dd>Baseline autoregressive coefficient.</dd><dt>alpha</dt>
<dd>Parameter controlling variance.</dd><dt>gamma1, gamma2, gamma3</dt>
<dd>Coefficients related to external factors.</dd><dt>Climate variable parameters</dt>
<dd>For each climate variable in each region, the following parameters are included:</dd>
 <code>mean(z)</code>, <code>sd(z)</code>, <code>sd(z)</code>, <code>xi_gev</code> for each region and variable.
</dl>

Format

Initial Parameters for 2D Pseudo-Loglikelihood-Generalized Estimation — init_params_full_G

A numeric vector of length \((2+M+4*D*M)\), structured as follows:<dl>
<dt>omega</dt>
<dd>Baseline autoregressive coefficient.</dd>

<dt>alpha</dt>
<dd>Parameter controlling variance.</dd>

<dt>gamma1, gamma2, gamma3</dt>
<dd>Coefficients related to external factors.</dd>

<dt>Climate variable parameters</dt>
<dd>For each climate variable in each region, the following parameters are included:</dd>


 <code>mean(z)</code>, <code>sd(z)</code>, <code>sd(z)</code>, <code>xi_gev</code> for each region and variable.


</dl>

init_params_full_G: Initial Parameters for 2D Pseudo-Loglikelihood-Generalized Estimation

Description

Usage

Arguments

Format