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# to you under the Apache License, Version 2.0 (the
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#-------------------------------------------------------------

X = read($X)

[fitted_X, fitted_var_hist, a0, arch_coef, var_coef] = garch(X=X, kmax=$kmax, momentum=$momentum, start_stepsize=$start_stepsize, end_stepsize=$end_stepsize, start_vicinity=$start_vicinity, end_vicinity=$end_vicinity, sim_seed=54321, verbose=FALSE)
mean_residual_error = matrix(sum(fitted_X - X) / nrow(fitted_X), rows=1, cols=1)

write(mean_residual_error, $model)