View source: R/update_eta_bktk.R
update_eta_bktk | R Documentation |
update_eta_bktk
updates the precision parameter tau = e^eta for L2E regression using Newton's method
update_eta_bktk(r, eta, max_iter = 100, tol = 1e-10)
r |
Vector of residual |
eta |
Initial estimate of eta |
max_iter |
Maximum number of iterations |
tol |
Relative tolerance |
Returns a list object containing the new estimate for eta (scalar), the number of iterations (scalar) the update step utilized, the eta and objective function solution paths (vectors), and the first and second derivatives calculated via Newton's method (vectors)
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